/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 0.2.0-7d8eed3 [2020-11-07 02:18:11,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:18:11,363 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:18:11,417 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:18:11,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:18:11,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:18:11,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:18:11,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:18:11,429 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:18:11,431 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:18:11,433 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:18:11,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:18:11,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:18:11,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:18:11,437 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:18:11,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:18:11,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:18:11,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:18:11,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:18:11,448 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:18:11,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:18:11,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:18:11,459 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:18:11,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:18:11,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:18:11,479 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 02:18:11,484 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 02:18:11,488 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 02:18:11,490 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 02:18:11,493 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 02:18:11,493 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 02:18:11,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 02:18:11,495 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 02:18:11,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:18:11,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:18:11,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:18:11,502 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:18:11,537 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:18:11,537 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:18:11,543 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:18:11,544 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:18:11,544 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:18:11,544 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:18:11,545 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:18:11,545 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:18:11,545 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:18:11,545 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:18:11,547 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:18:11,547 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:18:11,547 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:18:11,548 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:18:11,548 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:18:11,548 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:18:11,549 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:18:11,549 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:18:11,549 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:18:11,549 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:18:11,550 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:18:11,550 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:18:11,550 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:18:12,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:18:12,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:18:12,137 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:18:12,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:18:12,140 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:18:12,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-11-07 02:18:12,251 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72abed4db/d696e31c344b47118570692c558ed48f/FLAG0a91793bd [2020-11-07 02:18:13,080 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:18:13,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-11-07 02:18:13,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72abed4db/d696e31c344b47118570692c558ed48f/FLAG0a91793bd [2020-11-07 02:18:13,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72abed4db/d696e31c344b47118570692c558ed48f [2020-11-07 02:18:13,418 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:18:13,427 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:18:13,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:18:13,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:18:13,438 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:18:13,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:18:13" (1/1) ... [2020-11-07 02:18:13,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dc3a9f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:13, skipping insertion in model container [2020-11-07 02:18:13,447 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:18:13" (1/1) ... [2020-11-07 02:18:13,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:18:13,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:18:13,794 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:18:13,810 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:18:13,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:18:13,904 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:18:13,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:13 WrapperNode [2020-11-07 02:18:13,905 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:18:13,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:18:13,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:18:13,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:18:13,926 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:13" (1/1) ... [2020-11-07 02:18:13,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:13" (1/1) ... [2020-11-07 02:18:13,946 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:13" (1/1) ... [2020-11-07 02:18:13,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:13" (1/1) ... [2020-11-07 02:18:13,974 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:13" (1/1) ... [2020-11-07 02:18:13,996 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:13" (1/1) ... [2020-11-07 02:18:14,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:13" (1/1) ... [2020-11-07 02:18:14,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:18:14,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:18:14,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:18:14,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:18:14,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:13" (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 [2020-11-07 02:18:14,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:18:14,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:18:14,159 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:18:14,159 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-11-07 02:18:14,159 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-11-07 02:18:14,160 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-11-07 02:18:14,160 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-11-07 02:18:14,160 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-11-07 02:18:14,160 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-11-07 02:18:14,161 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-11-07 02:18:14,161 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-11-07 02:18:14,161 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-11-07 02:18:14,162 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-11-07 02:18:14,162 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-11-07 02:18:14,162 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-11-07 02:18:14,163 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-11-07 02:18:14,164 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-11-07 02:18:14,165 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-11-07 02:18:14,166 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-11-07 02:18:14,166 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-11-07 02:18:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-11-07 02:18:14,168 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-11-07 02:18:14,172 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-11-07 02:18:14,172 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:18:14,173 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:18:14,173 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:18:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:18:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:18:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-11-07 02:18:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-11-07 02:18:14,174 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-11-07 02:18:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-11-07 02:18:14,175 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-11-07 02:18:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:18:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-11-07 02:18:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-11-07 02:18:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-11-07 02:18:14,176 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-11-07 02:18:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-11-07 02:18:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-11-07 02:18:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-11-07 02:18:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-11-07 02:18:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-11-07 02:18:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-11-07 02:18:14,177 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-11-07 02:18:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-11-07 02:18:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-11-07 02:18:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-11-07 02:18:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-11-07 02:18:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:18:14,178 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:18:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:18:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:18:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:18:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:18:14,179 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:18:15,460 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:18:15,460 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-07 02:18:15,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:18:15 BoogieIcfgContainer [2020-11-07 02:18:15,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:18:15,466 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:18:15,466 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:18:15,470 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:18:15,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:18:13" (1/3) ... [2020-11-07 02:18:15,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adc8233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:18:15, skipping insertion in model container [2020-11-07 02:18:15,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:18:13" (2/3) ... [2020-11-07 02:18:15,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7adc8233 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:18:15, skipping insertion in model container [2020-11-07 02:18:15,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:18:15" (3/3) ... [2020-11-07 02:18:15,474 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.02.cil-2.c [2020-11-07 02:18:15,493 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:18:15,499 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:18:15,519 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:18:15,554 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:18:15,554 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:18:15,554 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:18:15,554 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:18:15,554 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:18:15,555 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:18:15,555 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:18:15,555 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:18:15,584 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-11-07 02:18:15,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-11-07 02:18:15,609 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:18:15,610 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:18:15,611 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:18:15,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:18:15,620 INFO L82 PathProgramCache]: Analyzing trace with hash -1129586116, now seen corresponding path program 1 times [2020-11-07 02:18:15,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:18:15,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176073282] [2020-11-07 02:18:15,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:18:15,725 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:18:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,243 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-07 02:18:16,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:18:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:18:16,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:18:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:18:16,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:18:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:18:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:18:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:16,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:18:16,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:18:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:18:16,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176073282] [2020-11-07 02:18:16,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:18:16,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:18:16,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610612926] [2020-11-07 02:18:16,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:18:16,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:18:16,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:18:16,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:18:16,584 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 8 states. [2020-11-07 02:18:17,122 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-07 02:18:17,337 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-07 02:18:20,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:18:20,876 INFO L93 Difference]: Finished difference Result 704 states and 942 transitions. [2020-11-07 02:18:20,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 02:18:20,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-11-07 02:18:20,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:18:20,906 INFO L225 Difference]: With dead ends: 704 [2020-11-07 02:18:20,907 INFO L226 Difference]: Without dead ends: 439 [2020-11-07 02:18:20,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:18:20,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-11-07 02:18:21,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 282. [2020-11-07 02:18:21,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 282 states. [2020-11-07 02:18:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 344 transitions. [2020-11-07 02:18:21,120 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 344 transitions. Word has length 143 [2020-11-07 02:18:21,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:18:21,122 INFO L481 AbstractCegarLoop]: Abstraction has 282 states and 344 transitions. [2020-11-07 02:18:21,122 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:18:21,122 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 344 transitions. [2020-11-07 02:18:21,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-11-07 02:18:21,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:18:21,144 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:18:21,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:18:21,145 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:18:21,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:18:21,150 INFO L82 PathProgramCache]: Analyzing trace with hash -671587876, now seen corresponding path program 1 times [2020-11-07 02:18:21,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:18:21,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333348139] [2020-11-07 02:18:21,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:18:21,161 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:18:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:18:21,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:18:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:18:21,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:18:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:18:21,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:18:21,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:18:21,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:21,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:18:21,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:18:21,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:21,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:18:21,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333348139] [2020-11-07 02:18:21,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:18:21,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:18:21,623 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382249680] [2020-11-07 02:18:21,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:18:21,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:18:21,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:18:21,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:18:21,626 INFO L87 Difference]: Start difference. First operand 282 states and 344 transitions. Second operand 8 states. [2020-11-07 02:18:21,960 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-07 02:18:22,192 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-07 02:18:24,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:18:24,993 INFO L93 Difference]: Finished difference Result 670 states and 856 transitions. [2020-11-07 02:18:24,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-07 02:18:24,994 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-11-07 02:18:24,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:18:25,012 INFO L225 Difference]: With dead ends: 670 [2020-11-07 02:18:25,013 INFO L226 Difference]: Without dead ends: 438 [2020-11-07 02:18:25,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-11-07 02:18:25,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-11-07 02:18:25,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 281. [2020-11-07 02:18:25,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-11-07 02:18:25,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 342 transitions. [2020-11-07 02:18:25,150 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 342 transitions. Word has length 143 [2020-11-07 02:18:25,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:18:25,151 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 342 transitions. [2020-11-07 02:18:25,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:18:25,151 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 342 transitions. [2020-11-07 02:18:25,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-11-07 02:18:25,154 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:18:25,154 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:18:25,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:18:25,155 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:18:25,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:18:25,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1212829316, now seen corresponding path program 1 times [2020-11-07 02:18:25,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:18:25,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [172201274] [2020-11-07 02:18:25,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:18:25,160 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:18:25,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:18:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:18:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:18:25,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:18:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:18:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:18:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:18:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:25,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:18:25,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:18:25,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:25,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:18:25,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [172201274] [2020-11-07 02:18:25,658 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:18:25,658 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 02:18:25,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498034656] [2020-11-07 02:18:25,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 02:18:25,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:18:25,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 02:18:25,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:18:25,664 INFO L87 Difference]: Start difference. First operand 281 states and 342 transitions. Second operand 7 states. [2020-11-07 02:18:29,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:18:29,819 INFO L93 Difference]: Finished difference Result 1007 states and 1307 transitions. [2020-11-07 02:18:29,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 02:18:29,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 143 [2020-11-07 02:18:29,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:18:29,830 INFO L225 Difference]: With dead ends: 1007 [2020-11-07 02:18:29,830 INFO L226 Difference]: Without dead ends: 780 [2020-11-07 02:18:29,833 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-11-07 02:18:29,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2020-11-07 02:18:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 528. [2020-11-07 02:18:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528 states. [2020-11-07 02:18:30,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 650 transitions. [2020-11-07 02:18:30,036 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 650 transitions. Word has length 143 [2020-11-07 02:18:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:18:30,043 INFO L481 AbstractCegarLoop]: Abstraction has 528 states and 650 transitions. [2020-11-07 02:18:30,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 02:18:30,044 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 650 transitions. [2020-11-07 02:18:30,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-07 02:18:30,049 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:18:30,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:18:30,050 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:18:30,051 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:18:30,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:18:30,057 INFO L82 PathProgramCache]: Analyzing trace with hash 441216868, now seen corresponding path program 1 times [2020-11-07 02:18:30,058 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:18:30,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008036680] [2020-11-07 02:18:30,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:18:30,075 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:18:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,356 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-07 02:18:30,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:30,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:18:30,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:18:30,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:18:30,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:18:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:18:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:18:30,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:18:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:30,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:18:30,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:18:30,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 02:18:30,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:18:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:30,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:18:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:18:30,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 02:18:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-07 02:18:30,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008036680] [2020-11-07 02:18:30,961 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:18:30,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:18:30,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282931057] [2020-11-07 02:18:30,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:18:30,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:18:30,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:18:30,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:18:30,967 INFO L87 Difference]: Start difference. First operand 528 states and 650 transitions. Second operand 10 states. [2020-11-07 02:18:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:18:37,631 INFO L93 Difference]: Finished difference Result 2275 states and 3121 transitions. [2020-11-07 02:18:37,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-07 02:18:37,632 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 222 [2020-11-07 02:18:37,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:18:37,651 INFO L225 Difference]: With dead ends: 2275 [2020-11-07 02:18:37,651 INFO L226 Difference]: Without dead ends: 1802 [2020-11-07 02:18:37,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=241, Invalid=515, Unknown=0, NotChecked=0, Total=756 [2020-11-07 02:18:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2020-11-07 02:18:38,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1057. [2020-11-07 02:18:38,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1057 states. [2020-11-07 02:18:38,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1351 transitions. [2020-11-07 02:18:38,030 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1351 transitions. Word has length 222 [2020-11-07 02:18:38,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:18:38,031 INFO L481 AbstractCegarLoop]: Abstraction has 1057 states and 1351 transitions. [2020-11-07 02:18:38,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:18:38,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1351 transitions. [2020-11-07 02:18:38,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-11-07 02:18:38,037 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:18:38,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:18:38,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:18:38,038 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:18:38,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:18:38,039 INFO L82 PathProgramCache]: Analyzing trace with hash -775451900, now seen corresponding path program 1 times [2020-11-07 02:18:38,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:18:38,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757713421] [2020-11-07 02:18:38,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:18:38,043 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:18:38,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:18:38,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:18:38,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:18:38,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:18:38,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:18:38,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:18:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:18:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:18:38,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:18:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 02:18:38,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:18:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:18:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:18:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-11-07 02:18:38,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-07 02:18:38,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757713421] [2020-11-07 02:18:38,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:18:38,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 02:18:38,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761389857] [2020-11-07 02:18:38,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 02:18:38,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:18:38,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 02:18:38,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:18:38,505 INFO L87 Difference]: Start difference. First operand 1057 states and 1351 transitions. Second operand 9 states. [2020-11-07 02:18:41,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:18:41,885 INFO L93 Difference]: Finished difference Result 2590 states and 3407 transitions. [2020-11-07 02:18:41,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 02:18:41,891 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 222 [2020-11-07 02:18:41,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:18:41,906 INFO L225 Difference]: With dead ends: 2590 [2020-11-07 02:18:41,906 INFO L226 Difference]: Without dead ends: 1586 [2020-11-07 02:18:41,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-11-07 02:18:41,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1586 states. [2020-11-07 02:18:42,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1586 to 1049. [2020-11-07 02:18:42,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2020-11-07 02:18:42,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1338 transitions. [2020-11-07 02:18:42,243 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1338 transitions. Word has length 222 [2020-11-07 02:18:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:18:42,244 INFO L481 AbstractCegarLoop]: Abstraction has 1049 states and 1338 transitions. [2020-11-07 02:18:42,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 02:18:42,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1338 transitions. [2020-11-07 02:18:42,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-11-07 02:18:42,250 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:18:42,250 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:18:42,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:18:42,251 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:18:42,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:18:42,252 INFO L82 PathProgramCache]: Analyzing trace with hash -485958965, now seen corresponding path program 1 times [2020-11-07 02:18:42,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:18:42,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096941907] [2020-11-07 02:18:42,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:18:42,255 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:18:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:42,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:18:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:18:42,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:18:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:18:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:18:42,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:18:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:18:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:42,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:18:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:18:42,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 02:18:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:18:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:18:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:18:42,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:42,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-11-07 02:18:42,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:42,848 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-07 02:18:42,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096941907] [2020-11-07 02:18:42,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:18:42,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:18:42,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992479038] [2020-11-07 02:18:42,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:18:42,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:18:42,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:18:42,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:18:42,852 INFO L87 Difference]: Start difference. First operand 1049 states and 1338 transitions. Second operand 10 states. [2020-11-07 02:18:43,249 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-07 02:18:48,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:18:48,776 INFO L93 Difference]: Finished difference Result 4554 states and 6617 transitions. [2020-11-07 02:18:48,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-07 02:18:48,776 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 227 [2020-11-07 02:18:48,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:18:48,816 INFO L225 Difference]: With dead ends: 4554 [2020-11-07 02:18:48,816 INFO L226 Difference]: Without dead ends: 3559 [2020-11-07 02:18:48,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=241, Invalid=515, Unknown=0, NotChecked=0, Total=756 [2020-11-07 02:18:48,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3559 states. [2020-11-07 02:18:49,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3559 to 2134. [2020-11-07 02:18:49,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2134 states. [2020-11-07 02:18:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2134 states to 2134 states and 2849 transitions. [2020-11-07 02:18:49,617 INFO L78 Accepts]: Start accepts. Automaton has 2134 states and 2849 transitions. Word has length 227 [2020-11-07 02:18:49,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:18:49,618 INFO L481 AbstractCegarLoop]: Abstraction has 2134 states and 2849 transitions. [2020-11-07 02:18:49,618 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:18:49,619 INFO L276 IsEmpty]: Start isEmpty. Operand 2134 states and 2849 transitions. [2020-11-07 02:18:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-11-07 02:18:49,627 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:18:49,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:18:49,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:18:49,628 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:18:49,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:18:49,629 INFO L82 PathProgramCache]: Analyzing trace with hash -7167836, now seen corresponding path program 1 times [2020-11-07 02:18:49,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:18:49,629 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608456960] [2020-11-07 02:18:49,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:18:49,633 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:18:49,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:18:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:18:49,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:18:49,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:18:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:18:49,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:18:49,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:18:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:49,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:18:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:18:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 02:18:49,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:18:49,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:49,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:18:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:18:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:49,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-07 02:18:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:50,072 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-11-07 02:18:50,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608456960] [2020-11-07 02:18:50,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:18:50,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 02:18:50,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695362118] [2020-11-07 02:18:50,074 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 02:18:50,074 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:18:50,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 02:18:50,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-11-07 02:18:50,075 INFO L87 Difference]: Start difference. First operand 2134 states and 2849 transitions. Second operand 11 states. [2020-11-07 02:18:51,685 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 02:19:02,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:19:02,739 INFO L93 Difference]: Finished difference Result 11370 states and 16175 transitions. [2020-11-07 02:19:02,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-07 02:19:02,740 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 232 [2020-11-07 02:19:02,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:19:02,829 INFO L225 Difference]: With dead ends: 11370 [2020-11-07 02:19:02,830 INFO L226 Difference]: Without dead ends: 9288 [2020-11-07 02:19:02,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=566, Invalid=2296, Unknown=0, NotChecked=0, Total=2862 [2020-11-07 02:19:02,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9288 states. [2020-11-07 02:19:05,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9288 to 7079. [2020-11-07 02:19:05,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7079 states. [2020-11-07 02:19:05,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7079 states to 7079 states and 9448 transitions. [2020-11-07 02:19:05,443 INFO L78 Accepts]: Start accepts. Automaton has 7079 states and 9448 transitions. Word has length 232 [2020-11-07 02:19:05,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:19:05,444 INFO L481 AbstractCegarLoop]: Abstraction has 7079 states and 9448 transitions. [2020-11-07 02:19:05,445 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 02:19:05,445 INFO L276 IsEmpty]: Start isEmpty. Operand 7079 states and 9448 transitions. [2020-11-07 02:19:05,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-11-07 02:19:05,460 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:19:05,461 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:19:05,461 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 02:19:05,461 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:19:05,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:19:05,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1250168170, now seen corresponding path program 1 times [2020-11-07 02:19:05,463 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:19:05,463 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138122375] [2020-11-07 02:19:05,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:19:05,468 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:19:05,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:05,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:19:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:19:05,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:19:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:19:05,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:19:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:05,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:19:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:19:05,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:19:05,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:19:05,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 02:19:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:19:05,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:05,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 02:19:05,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-07 02:19:05,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-11-07 02:19:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:19:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:05,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 02:19:05,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:05,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-07 02:19:05,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:06,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-11-07 02:19:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:06,111 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-07 02:19:06,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2138122375] [2020-11-07 02:19:06,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:19:06,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:19:06,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164510475] [2020-11-07 02:19:06,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:19:06,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:19:06,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:19:06,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:19:06,114 INFO L87 Difference]: Start difference. First operand 7079 states and 9448 transitions. Second operand 12 states. [2020-11-07 02:19:07,119 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 86 [2020-11-07 02:19:07,241 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 02:19:07,499 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:19:13,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:19:13,625 INFO L93 Difference]: Finished difference Result 16749 states and 23458 transitions. [2020-11-07 02:19:13,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-07 02:19:13,626 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 288 [2020-11-07 02:19:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:19:13,717 INFO L225 Difference]: With dead ends: 16749 [2020-11-07 02:19:13,717 INFO L226 Difference]: Without dead ends: 9723 [2020-11-07 02:19:13,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-11-07 02:19:13,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9723 states. [2020-11-07 02:19:15,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9723 to 7281. [2020-11-07 02:19:15,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7281 states. [2020-11-07 02:19:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7281 states to 7281 states and 9629 transitions. [2020-11-07 02:19:15,957 INFO L78 Accepts]: Start accepts. Automaton has 7281 states and 9629 transitions. Word has length 288 [2020-11-07 02:19:15,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:19:15,958 INFO L481 AbstractCegarLoop]: Abstraction has 7281 states and 9629 transitions. [2020-11-07 02:19:15,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:19:15,958 INFO L276 IsEmpty]: Start isEmpty. Operand 7281 states and 9629 transitions. [2020-11-07 02:19:15,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-11-07 02:19:15,973 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:19:15,973 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:19:15,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 02:19:15,974 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:19:15,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:19:15,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1377316729, now seen corresponding path program 1 times [2020-11-07 02:19:15,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:19:15,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [810447720] [2020-11-07 02:19:15,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:19:15,980 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:19:16,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:16,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:19:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:19:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:19:16,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:19:16,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:19:16,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:19:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:19:16,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:19:16,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:19:16,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 02:19:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:19:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:16,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:19:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:19:16,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-11-07 02:19:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:19:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:16,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 02:19:16,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:19:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-11-07 02:19:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:19:16,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [810447720] [2020-11-07 02:19:16,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:19:16,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 02:19:16,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526335007] [2020-11-07 02:19:16,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 02:19:16,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:19:16,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 02:19:16,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-07 02:19:16,492 INFO L87 Difference]: Start difference. First operand 7281 states and 9629 transitions. Second operand 11 states. [2020-11-07 02:19:26,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:19:26,077 INFO L93 Difference]: Finished difference Result 21182 states and 29885 transitions. [2020-11-07 02:19:26,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-07 02:19:26,078 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 288 [2020-11-07 02:19:26,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:19:26,191 INFO L225 Difference]: With dead ends: 21182 [2020-11-07 02:19:26,192 INFO L226 Difference]: Without dead ends: 13954 [2020-11-07 02:19:26,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 271 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 02:19:26,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13954 states. [2020-11-07 02:19:29,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13954 to 11031. [2020-11-07 02:19:29,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11031 states. [2020-11-07 02:19:29,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11031 states to 11031 states and 14339 transitions. [2020-11-07 02:19:29,884 INFO L78 Accepts]: Start accepts. Automaton has 11031 states and 14339 transitions. Word has length 288 [2020-11-07 02:19:29,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:19:29,886 INFO L481 AbstractCegarLoop]: Abstraction has 11031 states and 14339 transitions. [2020-11-07 02:19:29,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 02:19:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 11031 states and 14339 transitions. [2020-11-07 02:19:29,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-11-07 02:19:29,909 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:19:29,909 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, 2, 2, 2, 2, 2, 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] [2020-11-07 02:19:29,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 02:19:29,910 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:19:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:19:29,911 INFO L82 PathProgramCache]: Analyzing trace with hash -52384026, now seen corresponding path program 1 times [2020-11-07 02:19:29,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:19:29,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962555452] [2020-11-07 02:19:29,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:19:29,915 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:19:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,098 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-07 02:19:30,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:30,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:19:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:19:30,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:19:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:19:30,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:19:30,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:30,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:19:30,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:19:30,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:19:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:19:30,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 02:19:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:19:30,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:30,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:19:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:19:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-07 02:19:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:19:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 02:19:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:19:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2020-11-07 02:19:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:30,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:19:30,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962555452] [2020-11-07 02:19:30,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:19:30,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 02:19:30,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64288666] [2020-11-07 02:19:30,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 02:19:30,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:19:30,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 02:19:30,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-07 02:19:30,539 INFO L87 Difference]: Start difference. First operand 11031 states and 14339 transitions. Second operand 11 states. [2020-11-07 02:19:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:19:42,171 INFO L93 Difference]: Finished difference Result 31906 states and 44428 transitions. [2020-11-07 02:19:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-07 02:19:42,172 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 288 [2020-11-07 02:19:42,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:19:42,325 INFO L225 Difference]: With dead ends: 31906 [2020-11-07 02:19:42,325 INFO L226 Difference]: Without dead ends: 20928 [2020-11-07 02:19:42,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 264 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=262, Invalid=860, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 02:19:42,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20928 states. [2020-11-07 02:19:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20928 to 16117. [2020-11-07 02:19:47,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16117 states. [2020-11-07 02:19:47,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16117 states to 16117 states and 20623 transitions. [2020-11-07 02:19:47,509 INFO L78 Accepts]: Start accepts. Automaton has 16117 states and 20623 transitions. Word has length 288 [2020-11-07 02:19:47,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:19:47,511 INFO L481 AbstractCegarLoop]: Abstraction has 16117 states and 20623 transitions. [2020-11-07 02:19:47,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 02:19:47,511 INFO L276 IsEmpty]: Start isEmpty. Operand 16117 states and 20623 transitions. [2020-11-07 02:19:47,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-11-07 02:19:47,542 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:19:47,542 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-07 02:19:47,543 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 02:19:47,543 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:19:47,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:19:47,543 INFO L82 PathProgramCache]: Analyzing trace with hash 254318487, now seen corresponding path program 1 times [2020-11-07 02:19:47,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:19:47,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107059833] [2020-11-07 02:19:47,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:19:47,548 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:19:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,736 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-07 02:19:47,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:47,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:19:47,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:19:47,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:19:47,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:19:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:19:47,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:19:47,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:19:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:19:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:19:47,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 02:19:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:19:47,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:19:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:19:47,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-11-07 02:19:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 02:19:47,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-11-07 02:19:47,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:19:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:19:47,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:19:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 02:19:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:19:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:47,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 02:19:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:19:48,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:19:48,106 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107059833] [2020-11-07 02:19:48,107 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:19:48,107 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 02:19:48,107 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061371165] [2020-11-07 02:19:48,108 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 02:19:48,108 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:19:48,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 02:19:48,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-07 02:19:48,109 INFO L87 Difference]: Start difference. First operand 16117 states and 20623 transitions. Second operand 11 states. [2020-11-07 02:19:55,872 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-11-07 02:20:05,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:20:05,153 INFO L93 Difference]: Finished difference Result 32636 states and 42916 transitions. [2020-11-07 02:20:05,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-07 02:20:05,154 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 323 [2020-11-07 02:20:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:20:05,310 INFO L225 Difference]: With dead ends: 32636 [2020-11-07 02:20:05,311 INFO L226 Difference]: Without dead ends: 21861 [2020-11-07 02:20:05,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1162 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=808, Invalid=2614, Unknown=0, NotChecked=0, Total=3422 [2020-11-07 02:20:05,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21861 states. [2020-11-07 02:20:10,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21861 to 16761. [2020-11-07 02:20:10,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16761 states. [2020-11-07 02:20:10,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16761 states to 16761 states and 21063 transitions. [2020-11-07 02:20:10,500 INFO L78 Accepts]: Start accepts. Automaton has 16761 states and 21063 transitions. Word has length 323 [2020-11-07 02:20:10,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:20:10,501 INFO L481 AbstractCegarLoop]: Abstraction has 16761 states and 21063 transitions. [2020-11-07 02:20:10,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 02:20:10,501 INFO L276 IsEmpty]: Start isEmpty. Operand 16761 states and 21063 transitions. [2020-11-07 02:20:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-11-07 02:20:10,535 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:20:10,535 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-11-07 02:20:10,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 02:20:10,536 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:20:10,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:20:10,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1518201429, now seen corresponding path program 1 times [2020-11-07 02:20:10,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:20:10,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744638562] [2020-11-07 02:20:10,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:20:10,541 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:20:10,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:10,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:20:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:20:10,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:20:10,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:20:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:20:10,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:10,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:20:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:20:10,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:20:10,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:20:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-11-07 02:20:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:20:10,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:20:10,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:20:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-11-07 02:20:10,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-11-07 02:20:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-11-07 02:20:10,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:20:10,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 02:20:10,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 02:20:10,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:10,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 295 [2020-11-07 02:20:11,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:20:11,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744638562] [2020-11-07 02:20:11,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:20:11,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:20:11,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179305880] [2020-11-07 02:20:11,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:20:11,127 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:20:11,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:20:11,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:20:11,128 INFO L87 Difference]: Start difference. First operand 16761 states and 21063 transitions. Second operand 12 states. [2020-11-07 02:20:13,094 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 02:20:13,666 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-07 02:20:28,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:20:28,452 INFO L93 Difference]: Finished difference Result 32104 states and 41167 transitions. [2020-11-07 02:20:28,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-11-07 02:20:28,452 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 323 [2020-11-07 02:20:28,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:20:28,555 INFO L225 Difference]: With dead ends: 32104 [2020-11-07 02:20:28,555 INFO L226 Difference]: Without dead ends: 20695 [2020-11-07 02:20:28,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1525 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=810, Invalid=3612, Unknown=0, NotChecked=0, Total=4422 [2020-11-07 02:20:28,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20695 states. [2020-11-07 02:20:33,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20695 to 17065. [2020-11-07 02:20:33,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17065 states. [2020-11-07 02:20:33,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17065 states to 17065 states and 20931 transitions. [2020-11-07 02:20:33,438 INFO L78 Accepts]: Start accepts. Automaton has 17065 states and 20931 transitions. Word has length 323 [2020-11-07 02:20:33,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:20:33,439 INFO L481 AbstractCegarLoop]: Abstraction has 17065 states and 20931 transitions. [2020-11-07 02:20:33,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:20:33,440 INFO L276 IsEmpty]: Start isEmpty. Operand 17065 states and 20931 transitions. [2020-11-07 02:20:33,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-11-07 02:20:33,463 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:20:33,463 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, 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] [2020-11-07 02:20:33,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-11-07 02:20:33,464 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:20:33,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:20:33,464 INFO L82 PathProgramCache]: Analyzing trace with hash -1163647285, now seen corresponding path program 1 times [2020-11-07 02:20:33,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:20:33,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [404376490] [2020-11-07 02:20:33,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:20:33,469 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:20:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:33,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:33,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:20:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:20:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:33,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:20:33,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:33,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:20:33,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:33,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:20:33,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:33,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:33,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:33,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:20:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:33,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:20:33,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:33,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:20:33,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:33,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:20:33,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-11-07 02:20:34,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 02:20:34,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 02:20:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:20:34,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:34,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:20:34,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:20:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2020-11-07 02:20:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:20:34,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:34,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:34,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 02:20:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-11-07 02:20:34,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2020-11-07 02:20:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:20:34,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [404376490] [2020-11-07 02:20:34,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:20:34,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 02:20:34,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33845924] [2020-11-07 02:20:34,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 02:20:34,277 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:20:34,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 02:20:34,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:20:34,279 INFO L87 Difference]: Start difference. First operand 17065 states and 20931 transitions. Second operand 13 states. [2020-11-07 02:20:34,750 WARN L194 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-11-07 02:20:36,640 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-11-07 02:20:40,566 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 02:20:56,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:20:56,626 INFO L93 Difference]: Finished difference Result 52751 states and 68370 transitions. [2020-11-07 02:20:56,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-11-07 02:20:56,627 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 330 [2020-11-07 02:20:56,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:20:57,007 INFO L225 Difference]: With dead ends: 52751 [2020-11-07 02:20:57,008 INFO L226 Difference]: Without dead ends: 35738 [2020-11-07 02:20:57,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2240 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=1196, Invalid=5284, Unknown=0, NotChecked=0, Total=6480 [2020-11-07 02:20:57,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35738 states. [2020-11-07 02:21:05,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35738 to 27514. [2020-11-07 02:21:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27514 states. [2020-11-07 02:21:06,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27514 states to 27514 states and 33098 transitions. [2020-11-07 02:21:06,031 INFO L78 Accepts]: Start accepts. Automaton has 27514 states and 33098 transitions. Word has length 330 [2020-11-07 02:21:06,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:21:06,032 INFO L481 AbstractCegarLoop]: Abstraction has 27514 states and 33098 transitions. [2020-11-07 02:21:06,032 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 02:21:06,032 INFO L276 IsEmpty]: Start isEmpty. Operand 27514 states and 33098 transitions. [2020-11-07 02:21:06,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-11-07 02:21:06,054 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:21:06,054 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, 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] [2020-11-07 02:21:06,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-11-07 02:21:06,054 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:21:06,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:21:06,055 INFO L82 PathProgramCache]: Analyzing trace with hash -2104056100, now seen corresponding path program 1 times [2020-11-07 02:21:06,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:21:06,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600347964] [2020-11-07 02:21:06,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:21:06,060 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:21:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:21:06,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:21:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:21:06,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:21:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:21:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:21:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:21:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:21:06,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:21:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:21:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:21:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-07 02:21:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 02:21:06,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 02:21:06,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:21:06,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:21:06,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:21:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:21:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:21:06,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-11-07 02:21:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:21:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:21:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:21:06,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 02:21:06,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:21:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 02:21:06,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:06,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:21:06,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600347964] [2020-11-07 02:21:06,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:21:06,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-11-07 02:21:06,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543644057] [2020-11-07 02:21:06,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-07 02:21:06,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:21:06,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-07 02:21:06,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-11-07 02:21:06,980 INFO L87 Difference]: Start difference. First operand 27514 states and 33098 transitions. Second operand 13 states. [2020-11-07 02:21:07,543 WARN L194 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 85 [2020-11-07 02:21:08,003 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2020-11-07 02:21:09,441 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2020-11-07 02:21:13,663 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 02:21:16,973 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-11-07 02:21:41,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:21:41,029 INFO L93 Difference]: Finished difference Result 92430 states and 118467 transitions. [2020-11-07 02:21:41,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-11-07 02:21:41,030 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 329 [2020-11-07 02:21:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:21:41,727 INFO L225 Difference]: With dead ends: 92430 [2020-11-07 02:21:41,728 INFO L226 Difference]: Without dead ends: 64968 [2020-11-07 02:21:41,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2640 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1293, Invalid=6189, Unknown=0, NotChecked=0, Total=7482 [2020-11-07 02:21:41,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64968 states. [2020-11-07 02:21:57,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64968 to 53213. [2020-11-07 02:21:57,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53213 states. [2020-11-07 02:21:57,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53213 states to 53213 states and 63248 transitions. [2020-11-07 02:21:57,511 INFO L78 Accepts]: Start accepts. Automaton has 53213 states and 63248 transitions. Word has length 329 [2020-11-07 02:21:57,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:21:57,512 INFO L481 AbstractCegarLoop]: Abstraction has 53213 states and 63248 transitions. [2020-11-07 02:21:57,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-07 02:21:57,512 INFO L276 IsEmpty]: Start isEmpty. Operand 53213 states and 63248 transitions. [2020-11-07 02:21:57,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2020-11-07 02:21:57,527 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:21:57,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:21:57,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-07 02:21:57,528 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:21:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:21:57,528 INFO L82 PathProgramCache]: Analyzing trace with hash -1688027972, now seen corresponding path program 1 times [2020-11-07 02:21:57,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:21:57,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274108271] [2020-11-07 02:21:57,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:21:57,531 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:21:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:21:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:21:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:21:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:21:57,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:21:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:21:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:21:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:21:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:21:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:21:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:21:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-11-07 02:21:57,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-11-07 02:21:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 02:21:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:21:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:21:57,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:21:57,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:21:57,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:21:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2020-11-07 02:21:57,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:21:57,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:21:57,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:21:57,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 02:21:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:57,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:21:57,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:58,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 301 [2020-11-07 02:21:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:21:58,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:21:58,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274108271] [2020-11-07 02:21:58,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:21:58,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:21:58,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417630887] [2020-11-07 02:21:58,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:21:58,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:21:58,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:21:58,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:21:58,173 INFO L87 Difference]: Start difference. First operand 53213 states and 63248 transitions. Second operand 12 states. [2020-11-07 02:22:21,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:22:21,113 INFO L93 Difference]: Finished difference Result 114781 states and 139706 transitions. [2020-11-07 02:22:21,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-07 02:22:21,114 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 329 [2020-11-07 02:22:21,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:22:21,557 INFO L225 Difference]: With dead ends: 114781 [2020-11-07 02:22:21,557 INFO L226 Difference]: Without dead ends: 61621 [2020-11-07 02:22:21,678 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-11-07 02:22:21,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61621 states. [2020-11-07 02:22:36,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61621 to 51813. [2020-11-07 02:22:36,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51813 states. [2020-11-07 02:22:36,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51813 states to 51813 states and 60528 transitions. [2020-11-07 02:22:36,558 INFO L78 Accepts]: Start accepts. Automaton has 51813 states and 60528 transitions. Word has length 329 [2020-11-07 02:22:36,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:22:36,559 INFO L481 AbstractCegarLoop]: Abstraction has 51813 states and 60528 transitions. [2020-11-07 02:22:36,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:22:36,559 INFO L276 IsEmpty]: Start isEmpty. Operand 51813 states and 60528 transitions. [2020-11-07 02:22:36,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 536 [2020-11-07 02:22:36,588 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:22:36,588 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:22:36,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-11-07 02:22:36,589 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:22:36,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:22:36,589 INFO L82 PathProgramCache]: Analyzing trace with hash 599072793, now seen corresponding path program 1 times [2020-11-07 02:22:36,590 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:22:36,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1942617297] [2020-11-07 02:22:36,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:22:36,593 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:22:36,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:36,923 WARN L194 SmtUtils]: Spent 270.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-11-07 02:22:36,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:36,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:36,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:22:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:36,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:22:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:36,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:22:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:36,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:22:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:36,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:22:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:36,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:22:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:22:37,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:22:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:22:37,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-11-07 02:22:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:22:37,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-11-07 02:22:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-11-07 02:22:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-11-07 02:22:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 02:22:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2020-11-07 02:22:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:22:37,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:22:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:22:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-11-07 02:22:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-11-07 02:22:37,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2020-11-07 02:22:37,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:22:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-11-07 02:22:37,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-11-07 02:22:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 300 [2020-11-07 02:22:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-11-07 02:22:37,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:22:37,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:37,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:22:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:22:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:22:37,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-11-07 02:22:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:22:37,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:22:37,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:22:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-07 02:22:37,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 449 [2020-11-07 02:22:37,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:22:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:22:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 02:22:37,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 02:22:37,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 507 [2020-11-07 02:22:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-11-07 02:22:37,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1942617297] [2020-11-07 02:22:37,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:22:37,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-11-07 02:22:37,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344351415] [2020-11-07 02:22:37,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-07 02:22:37,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:22:37,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-07 02:22:37,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-11-07 02:22:37,654 INFO L87 Difference]: Start difference. First operand 51813 states and 60528 transitions. Second operand 15 states. [2020-11-07 02:22:46,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:22:46,597 INFO L93 Difference]: Finished difference Result 63498 states and 74165 transitions. [2020-11-07 02:22:46,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-07 02:22:46,597 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 535 [2020-11-07 02:22:46,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:22:46,653 INFO L225 Difference]: With dead ends: 63498 [2020-11-07 02:22:46,653 INFO L226 Difference]: Without dead ends: 11739 [2020-11-07 02:22:46,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 935 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=754, Invalid=2326, Unknown=0, NotChecked=0, Total=3080 [2020-11-07 02:22:46,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11739 states. [2020-11-07 02:22:49,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11739 to 9748. [2020-11-07 02:22:49,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9748 states. [2020-11-07 02:22:49,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9748 states to 9748 states and 10991 transitions. [2020-11-07 02:22:49,507 INFO L78 Accepts]: Start accepts. Automaton has 9748 states and 10991 transitions. Word has length 535 [2020-11-07 02:22:49,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:22:49,508 INFO L481 AbstractCegarLoop]: Abstraction has 9748 states and 10991 transitions. [2020-11-07 02:22:49,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-07 02:22:49,508 INFO L276 IsEmpty]: Start isEmpty. Operand 9748 states and 10991 transitions. [2020-11-07 02:22:49,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-11-07 02:22:49,512 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:22:49,513 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, 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, 1, 1] [2020-11-07 02:22:49,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-11-07 02:22:49,513 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:22:49,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:22:49,514 INFO L82 PathProgramCache]: Analyzing trace with hash -909172723, now seen corresponding path program 1 times [2020-11-07 02:22:49,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:22:49,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398681874] [2020-11-07 02:22:49,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:22:50,107 WARN L194 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 115 [2020-11-07 02:22:50,337 WARN L194 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:22:53,768 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 02:22:53,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-11-07 02:22:54,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:22:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-11-07 02:22:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-11-07 02:22:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-11-07 02:22:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:22:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:22:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:22:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-11-07 02:22:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:22:54,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-11-07 02:22:54,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:22:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:22:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:22:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-11-07 02:22:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-11-07 02:22:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:22:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:22:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:22:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-11-07 02:22:54,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-11-07 02:22:54,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-11-07 02:22:54,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:22:54,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:23:00,837 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-11-07 02:23:01,058 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-07 02:23:01,281 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-07 02:23:01,637 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-11-07 02:23:01,863 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-07 02:23:02,205 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-07 02:23:02,427 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-07 02:23:02,653 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-11-07 02:23:05,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1398681874] [2020-11-07 02:23:05,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:23:05,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [97] imperfect sequences [] total 97 [2020-11-07 02:23:05,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840609796] [2020-11-07 02:23:05,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 98 states [2020-11-07 02:23:05,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:23:05,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 98 interpolants. [2020-11-07 02:23:05,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=764, Invalid=8742, Unknown=0, NotChecked=0, Total=9506 [2020-11-07 02:23:05,415 INFO L87 Difference]: Start difference. First operand 9748 states and 10991 transitions. Second operand 98 states. [2020-11-07 02:23:08,653 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 02:23:09,279 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:23:09,415 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:23:11,297 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:23:11,483 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:23:11,662 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:23:11,855 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:23:12,191 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 02:23:12,430 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:23:12,629 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:23:12,849 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-07 02:23:13,046 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 02:23:13,246 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:23:13,430 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:23:13,655 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 02:23:14,033 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:23:14,355 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:23:16,701 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:23:16,945 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-07 02:23:18,075 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-07 02:23:18,631 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-11-07 02:23:19,008 WARN L194 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-11-07 02:23:19,361 WARN L194 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-11-07 02:23:21,337 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:23:21,709 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:23:22,132 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-11-07 02:23:22,575 WARN L194 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:23:24,622 WARN L194 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-11-07 02:23:24,975 WARN L194 SmtUtils]: Spent 201.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-11-07 02:23:25,617 WARN L194 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 121 [2020-11-07 02:23:25,967 WARN L194 SmtUtils]: Spent 203.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-11-07 02:23:26,613 WARN L194 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-11-07 02:23:26,892 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-07 02:23:27,263 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-11-07 02:23:27,631 WARN L194 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-11-07 02:23:28,273 WARN L194 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-11-07 02:23:29,311 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:23:29,708 WARN L194 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-11-07 02:23:29,843 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:23:30,238 WARN L194 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-11-07 02:23:31,020 WARN L194 SmtUtils]: Spent 236.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-11-07 02:23:31,657 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:23:32,022 WARN L194 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-11-07 02:23:32,722 WARN L194 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 128 [2020-11-07 02:23:32,961 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:23:33,544 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:23:34,760 WARN L194 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 130 [2020-11-07 02:23:35,034 WARN L194 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:23:35,563 WARN L194 SmtUtils]: Spent 255.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-11-07 02:23:35,880 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:23:36,199 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:23:36,699 WARN L194 SmtUtils]: Spent 258.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-07 02:23:37,497 WARN L194 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-11-07 02:23:38,189 WARN L194 SmtUtils]: Spent 328.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-11-07 02:23:38,717 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:23:38,946 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:23:39,498 WARN L194 SmtUtils]: Spent 264.00 ms on a formula simplification that was a NOOP. DAG size: 132 [2020-11-07 02:23:39,743 WARN L194 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:23:40,500 WARN L194 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 134 [2020-11-07 02:23:41,122 WARN L194 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 136 [2020-11-07 02:23:41,634 WARN L194 SmtUtils]: Spent 273.00 ms on a formula simplification that was a NOOP. DAG size: 138 [2020-11-07 02:23:42,274 WARN L194 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:23:42,845 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 02:23:43,196 WARN L194 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:23:43,959 WARN L194 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 02:23:44,593 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-07 02:23:44,917 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-07 02:23:45,213 WARN L194 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-07 02:23:45,556 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-11-07 02:23:45,773 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:23:46,197 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:23:50,193 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:23:50,696 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 02:23:51,087 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 02:23:51,452 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:23:52,700 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:23:56,783 WARN L194 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-07 02:23:57,006 WARN L194 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-07 02:23:57,384 WARN L194 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2020-11-07 02:23:57,608 WARN L194 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-11-07 02:23:57,782 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 47 [2020-11-07 02:24:02,105 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 02:24:02,327 WARN L194 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:24:02,589 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:24:02,831 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:24:03,107 WARN L194 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-07 02:24:03,345 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-11-07 02:24:03,626 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:24:03,834 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:24:04,154 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-07 02:24:04,381 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-07 02:24:04,596 WARN L194 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 105 [2020-11-07 02:24:04,918 WARN L194 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:24:05,211 WARN L194 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-07 02:24:05,608 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-11-07 02:24:05,934 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-07 02:24:10,333 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:24:10,556 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 02:24:10,699 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 02:24:10,880 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:24:11,083 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 02:24:11,238 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:24:11,469 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:24:11,620 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 02:24:11,811 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:24:12,006 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:24:12,503 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:24:12,653 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:24:19,664 WARN L194 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-11-07 02:24:20,719 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:24:20,897 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:24:21,090 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:24:21,288 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:24:21,527 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-11-07 02:24:21,747 WARN L194 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 02:24:22,025 WARN L194 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 101 [2020-11-07 02:24:22,685 WARN L194 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 67 [2020-11-07 02:24:27,150 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:24:27,697 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:24:32,341 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 02:24:32,550 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 02:24:32,839 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:24:33,025 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:24:33,221 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:24:33,427 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:24:39,337 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-11-07 02:24:39,546 WARN L194 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 106 [2020-11-07 02:24:39,764 WARN L194 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 108 [2020-11-07 02:24:41,458 WARN L194 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-11-07 02:24:41,756 WARN L194 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-11-07 02:24:42,055 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 120 [2020-11-07 02:24:42,339 WARN L194 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-11-07 02:24:42,843 WARN L194 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 120 [2020-11-07 02:24:43,413 WARN L194 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 119 [2020-11-07 02:24:43,981 WARN L194 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 122 [2020-11-07 02:24:44,480 WARN L194 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-11-07 02:24:45,109 WARN L194 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-11-07 02:24:45,429 WARN L194 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-11-07 02:24:45,852 WARN L194 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-11-07 02:24:46,123 WARN L194 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-11-07 02:24:47,419 WARN L194 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2020-11-07 02:24:51,546 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:24:51,727 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:24:51,909 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:24:52,104 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-11-07 02:24:52,748 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:24:52,963 WARN L194 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:24:53,152 WARN L194 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 02:24:53,341 WARN L194 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:24:53,544 WARN L194 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-11-07 02:24:53,995 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-07 02:24:54,212 WARN L194 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:24:54,423 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-07 02:24:54,651 WARN L194 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:24:58,291 WARN L194 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-11-07 02:24:58,854 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:24:59,038 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 02:25:02,111 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:25:02,368 WARN L194 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-11-07 02:25:02,596 WARN L194 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:25:02,877 WARN L194 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-11-07 02:25:09,603 WARN L194 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-11-07 02:25:09,841 WARN L194 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 47 [2020-11-07 02:25:12,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:25:12,524 INFO L93 Difference]: Finished difference Result 26220 states and 30866 transitions. [2020-11-07 02:25:12,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 642 states. [2020-11-07 02:25:12,525 INFO L78 Accepts]: Start accepts. Automaton has 98 states. Word has length 396 [2020-11-07 02:25:12,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:25:12,651 INFO L225 Difference]: With dead ends: 26220 [2020-11-07 02:25:12,651 INFO L226 Difference]: Without dead ends: 17049 [2020-11-07 02:25:12,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1004 GetRequests, 258 SyntacticMatches, 11 SemanticMatches, 735 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252953 ImplicationChecksByTransitivity, 79.5s TimeCoverageRelationStatistics Valid=21216, Invalid=521216, Unknown=0, NotChecked=0, Total=542432 [2020-11-07 02:25:12,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17049 states. [2020-11-07 02:25:17,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17049 to 12518. [2020-11-07 02:25:17,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12518 states. [2020-11-07 02:25:17,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12518 states to 12518 states and 14281 transitions. [2020-11-07 02:25:17,866 INFO L78 Accepts]: Start accepts. Automaton has 12518 states and 14281 transitions. Word has length 396 [2020-11-07 02:25:17,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:25:17,867 INFO L481 AbstractCegarLoop]: Abstraction has 12518 states and 14281 transitions. [2020-11-07 02:25:17,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 98 states. [2020-11-07 02:25:17,867 INFO L276 IsEmpty]: Start isEmpty. Operand 12518 states and 14281 transitions. [2020-11-07 02:25:17,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2020-11-07 02:25:17,881 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:25:17,882 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:25:17,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-11-07 02:25:17,882 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:25:17,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:25:17,883 INFO L82 PathProgramCache]: Analyzing trace with hash -796805645, now seen corresponding path program 1 times [2020-11-07 02:25:17,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:25:17,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107872364] [2020-11-07 02:25:17,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:25:18,421 WARN L194 SmtUtils]: Spent 531.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 103 [2020-11-07 02:25:18,611 WARN L194 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 02:25:18,736 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 41 [2020-11-07 02:25:20,579 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.accelerateNestedLoops(AcceleratedInterpolation.java:569) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:275) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:343) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-07 02:25:20,582 INFO L168 Benchmark]: Toolchain (without parser) took 427161.74 ms. Allocated memory was 151.0 MB in the beginning and 7.0 GB in the end (delta: 6.8 GB). Free memory was 127.5 MB in the beginning and 3.4 GB in the end (delta: -3.3 GB). Peak memory consumption was 3.5 GB. Max. memory is 8.0 GB. [2020-11-07 02:25:20,583 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory is still 98.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:25:20,583 INFO L168 Benchmark]: CACSL2BoogieTranslator took 477.11 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 113.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:25:20,583 INFO L168 Benchmark]: Boogie Preprocessor took 107.64 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 110.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:25:20,584 INFO L168 Benchmark]: RCFGBuilder took 1445.30 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 126.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-11-07 02:25:20,584 INFO L168 Benchmark]: TraceAbstraction took 425115.18 ms. Allocated memory was 151.0 MB in the beginning and 7.0 GB in the end (delta: 6.8 GB). Free memory was 125.9 MB in the beginning and 3.4 GB in the end (delta: -3.3 GB). Peak memory consumption was 3.5 GB. Max. memory is 8.0 GB. [2020-11-07 02:25:20,586 INFO L339 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 125.8 MB. Free memory is still 98.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 477.11 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 113.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 107.64 ms. Allocated memory is still 151.0 MB. Free memory was 113.1 MB in the beginning and 110.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1445.30 ms. Allocated memory is still 151.0 MB. Free memory was 110.8 MB in the beginning and 126.4 MB in the end (delta: -15.6 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 425115.18 ms. Allocated memory was 151.0 MB in the beginning and 7.0 GB in the end (delta: 6.8 GB). Free memory was 125.9 MB in the beginning and 3.4 GB in the end (delta: -3.3 GB). Peak memory consumption was 3.5 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.accelerateNestedLoops(AcceleratedInterpolation.java:569) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...