/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:59:05,133 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:59:05,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:59:05,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:59:05,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:59:05,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:59:05,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:59:05,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:59:05,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:59:05,170 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:59:05,171 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:59:05,172 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:59:05,173 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:59:05,174 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:59:05,175 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:59:05,176 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:59:05,177 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:59:05,178 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:59:05,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:59:05,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:59:05,183 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:59:05,184 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:59:05,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:59:05,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:59:05,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:59:05,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:59:05,189 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:59:05,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:59:05,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:59:05,195 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:59:05,195 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:59:05,196 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:59:05,198 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:59:05,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:59:05,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:59:05,201 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:59:05,202 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:59:05,202 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:59:05,202 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:59:05,203 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:59:05,204 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:59:05,205 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:59:05,215 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:59:05,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:59:05,217 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:59:05,217 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:59:05,217 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:59:05,218 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:59:05,218 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:59:05,218 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:59:05,218 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:59:05,218 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:59:05,218 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:59:05,219 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:59:05,219 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:59:05,219 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:59:05,219 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:59:05,220 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:59:05,220 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:59:05,220 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:59:05,220 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:59:05,220 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:59:05,220 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:59:05,221 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:59:05,221 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:59:05,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:59:05,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:59:05,668 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:59:05,670 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:59:05,671 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:59:05,672 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-09-04 17:59:05,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dddfadcf2/637f3b149b78416aa54d6b0719bcbe75/FLAG5ea0c80e9 [2020-09-04 17:59:06,316 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:59:06,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-09-04 17:59:06,336 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dddfadcf2/637f3b149b78416aa54d6b0719bcbe75/FLAG5ea0c80e9 [2020-09-04 17:59:06,635 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dddfadcf2/637f3b149b78416aa54d6b0719bcbe75 [2020-09-04 17:59:06,650 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:59:06,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:59:06,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:59:06,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:59:06,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:59:06,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:59:06" (1/1) ... [2020-09-04 17:59:06,664 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67f72d40 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:06, skipping insertion in model container [2020-09-04 17:59:06,664 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:59:06" (1/1) ... [2020-09-04 17:59:06,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:59:06,737 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:59:07,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:59:07,019 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:59:07,062 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:59:07,166 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:59:07,167 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:07 WrapperNode [2020-09-04 17:59:07,167 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:59:07,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:59:07,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:59:07,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:59:07,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:07" (1/1) ... [2020-09-04 17:59:07,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:07" (1/1) ... [2020-09-04 17:59:07,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:07" (1/1) ... [2020-09-04 17:59:07,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:07" (1/1) ... [2020-09-04 17:59:07,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:07" (1/1) ... [2020-09-04 17:59:07,218 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:07" (1/1) ... [2020-09-04 17:59:07,221 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:07" (1/1) ... [2020-09-04 17:59:07,225 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:59:07,226 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:59:07,226 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:59:07,226 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:59:07,228 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 17:59:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:59:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:59:07,308 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-09-04 17:59:07,309 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-09-04 17:59:07,309 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-09-04 17:59:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-09-04 17:59:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-09-04 17:59:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-09-04 17:59:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-09-04 17:59:07,310 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-09-04 17:59:07,311 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-09-04 17:59:07,311 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-09-04 17:59:07,311 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-04 17:59:07,311 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-09-04 17:59:07,313 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-09-04 17:59:07,313 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-09-04 17:59:07,313 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-09-04 17:59:07,313 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-09-04 17:59:07,313 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-09-04 17:59:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-09-04 17:59:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-09-04 17:59:07,314 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-09-04 17:59:07,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:59:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:59:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:59:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-09-04 17:59:07,315 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-09-04 17:59:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-09-04 17:59:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-09-04 17:59:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-09-04 17:59:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-09-04 17:59:07,316 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-09-04 17:59:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-09-04 17:59:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-09-04 17:59:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-09-04 17:59:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-09-04 17:59:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-04 17:59:07,317 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-09-04 17:59:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-09-04 17:59:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-09-04 17:59:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-09-04 17:59:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-09-04 17:59:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-09-04 17:59:07,318 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-09-04 17:59:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-09-04 17:59:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:59:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:59:07,319 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:59:07,924 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:59:07,924 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-04 17:59:07,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:59:07 BoogieIcfgContainer [2020-09-04 17:59:07,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:59:07,933 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:59:07,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:59:07,937 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:59:07,937 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:59:06" (1/3) ... [2020-09-04 17:59:07,938 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5b0097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:59:07, skipping insertion in model container [2020-09-04 17:59:07,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:59:07" (2/3) ... [2020-09-04 17:59:07,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b5b0097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:59:07, skipping insertion in model container [2020-09-04 17:59:07,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:59:07" (3/3) ... [2020-09-04 17:59:07,941 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-09-04 17:59:07,952 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:59:07,962 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:59:07,982 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:59:08,008 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:59:08,008 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:59:08,008 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:59:08,008 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:59:08,008 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:59:08,009 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:59:08,009 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:59:08,009 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:59:08,030 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states. [2020-09-04 17:59:08,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-09-04 17:59:08,052 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:08,054 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] [2020-09-04 17:59:08,054 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:08,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:08,062 INFO L82 PathProgramCache]: Analyzing trace with hash -1383476838, now seen corresponding path program 1 times [2020-09-04 17:59:08,071 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:08,071 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204873087] [2020-09-04 17:59:08,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:08,140 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 17:59:08,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:59:08,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:08,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:59:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 17:59:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 17:59:08,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:59:08,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:08,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204873087] [2020-09-04 17:59:08,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:08,687 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:59:08,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136158714] [2020-09-04 17:59:08,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:59:08,695 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:08,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:59:08,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:59:08,717 INFO L87 Difference]: Start difference. First operand 257 states. Second operand 7 states. [2020-09-04 17:59:11,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:11,556 INFO L93 Difference]: Finished difference Result 946 states and 1320 transitions. [2020-09-04 17:59:11,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-04 17:59:11,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-09-04 17:59:11,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:11,592 INFO L225 Difference]: With dead ends: 946 [2020-09-04 17:59:11,592 INFO L226 Difference]: Without dead ends: 707 [2020-09-04 17:59:11,600 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-09-04 17:59:11,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2020-09-04 17:59:11,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 472. [2020-09-04 17:59:11,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2020-09-04 17:59:11,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 597 transitions. [2020-09-04 17:59:11,795 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 597 transitions. Word has length 127 [2020-09-04 17:59:11,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:11,799 INFO L479 AbstractCegarLoop]: Abstraction has 472 states and 597 transitions. [2020-09-04 17:59:11,799 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:59:11,799 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 597 transitions. [2020-09-04 17:59:11,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-04 17:59:11,816 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:11,816 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] [2020-09-04 17:59:11,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:59:11,817 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:11,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:11,817 INFO L82 PathProgramCache]: Analyzing trace with hash 1691024482, now seen corresponding path program 1 times [2020-09-04 17:59:11,818 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:11,818 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1931385173] [2020-09-04 17:59:11,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:11,821 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:11,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 17:59:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:59:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:11,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:59:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 17:59:12,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 17:59:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:59:12,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:12,079 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1931385173] [2020-09-04 17:59:12,079 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:12,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 17:59:12,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129637367] [2020-09-04 17:59:12,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 17:59:12,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:12,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 17:59:12,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 17:59:12,082 INFO L87 Difference]: Start difference. First operand 472 states and 597 transitions. Second operand 8 states. [2020-09-04 17:59:14,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:14,012 INFO L93 Difference]: Finished difference Result 1128 states and 1479 transitions. [2020-09-04 17:59:14,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 17:59:14,014 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 128 [2020-09-04 17:59:14,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:14,021 INFO L225 Difference]: With dead ends: 1128 [2020-09-04 17:59:14,022 INFO L226 Difference]: Without dead ends: 700 [2020-09-04 17:59:14,025 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-04 17:59:14,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2020-09-04 17:59:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 460. [2020-09-04 17:59:14,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-09-04 17:59:14,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 578 transitions. [2020-09-04 17:59:14,109 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 578 transitions. Word has length 128 [2020-09-04 17:59:14,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:14,109 INFO L479 AbstractCegarLoop]: Abstraction has 460 states and 578 transitions. [2020-09-04 17:59:14,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 17:59:14,110 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 578 transitions. [2020-09-04 17:59:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-09-04 17:59:14,112 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:14,112 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] [2020-09-04 17:59:14,113 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:59:14,113 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:14,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:14,113 INFO L82 PathProgramCache]: Analyzing trace with hash -2002481605, now seen corresponding path program 1 times [2020-09-04 17:59:14,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:14,114 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [494271603] [2020-09-04 17:59:14,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:14,116 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:14,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 17:59:14,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:59:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:59:14,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 17:59:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:14,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 17:59:14,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:59:14,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:14,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:14,379 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [494271603] [2020-09-04 17:59:14,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:14,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:59:14,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986109449] [2020-09-04 17:59:14,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:59:14,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:14,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:59:14,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:59:14,382 INFO L87 Difference]: Start difference. First operand 460 states and 578 transitions. Second operand 7 states. [2020-09-04 17:59:17,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:17,005 INFO L93 Difference]: Finished difference Result 1752 states and 2439 transitions. [2020-09-04 17:59:17,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 17:59:17,006 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-09-04 17:59:17,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:17,022 INFO L225 Difference]: With dead ends: 1752 [2020-09-04 17:59:17,023 INFO L226 Difference]: Without dead ends: 1336 [2020-09-04 17:59:17,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-09-04 17:59:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2020-09-04 17:59:17,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 947. [2020-09-04 17:59:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 947 states. [2020-09-04 17:59:17,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 947 states to 947 states and 1238 transitions. [2020-09-04 17:59:17,222 INFO L78 Accepts]: Start accepts. Automaton has 947 states and 1238 transitions. Word has length 132 [2020-09-04 17:59:17,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:17,223 INFO L479 AbstractCegarLoop]: Abstraction has 947 states and 1238 transitions. [2020-09-04 17:59:17,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:59:17,223 INFO L276 IsEmpty]: Start isEmpty. Operand 947 states and 1238 transitions. [2020-09-04 17:59:17,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-09-04 17:59:17,227 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:17,228 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:17,228 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:59:17,228 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:17,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:17,229 INFO L82 PathProgramCache]: Analyzing trace with hash 537882589, now seen corresponding path program 1 times [2020-09-04 17:59:17,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:17,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858474571] [2020-09-04 17:59:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:17,281 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:17,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 17:59:17,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:59:17,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:59:17,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 17:59:17,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:17,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:17,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 17:59:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:59:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 17:59:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 17:59:17,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:17,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:17,598 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858474571] [2020-09-04 17:59:17,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:17,600 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 17:59:17,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143632069] [2020-09-04 17:59:17,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 17:59:17,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:17,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 17:59:17,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-04 17:59:17,605 INFO L87 Difference]: Start difference. First operand 947 states and 1238 transitions. Second operand 8 states. [2020-09-04 17:59:21,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:21,052 INFO L93 Difference]: Finished difference Result 3722 states and 5501 transitions. [2020-09-04 17:59:21,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 17:59:21,052 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 165 [2020-09-04 17:59:21,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:21,075 INFO L225 Difference]: With dead ends: 3722 [2020-09-04 17:59:21,075 INFO L226 Difference]: Without dead ends: 2820 [2020-09-04 17:59:21,084 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=148, Invalid=314, Unknown=0, NotChecked=0, Total=462 [2020-09-04 17:59:21,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2020-09-04 17:59:21,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 2091. [2020-09-04 17:59:21,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2091 states. [2020-09-04 17:59:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2091 states to 2091 states and 2967 transitions. [2020-09-04 17:59:21,461 INFO L78 Accepts]: Start accepts. Automaton has 2091 states and 2967 transitions. Word has length 165 [2020-09-04 17:59:21,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:21,462 INFO L479 AbstractCegarLoop]: Abstraction has 2091 states and 2967 transitions. [2020-09-04 17:59:21,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 17:59:21,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2091 states and 2967 transitions. [2020-09-04 17:59:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-04 17:59:21,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:21,474 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:21,474 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:59:21,474 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:21,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:21,475 INFO L82 PathProgramCache]: Analyzing trace with hash 755814652, now seen corresponding path program 1 times [2020-09-04 17:59:21,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:21,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433601305] [2020-09-04 17:59:21,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:21,481 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:21,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 17:59:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:59:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:59:21,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 17:59:21,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:21,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:21,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:21,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 17:59:21,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:59:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 17:59:21,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-09-04 17:59:21,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-09-04 17:59:21,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:59:21,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:21,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:21,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:21,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:21,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433601305] [2020-09-04 17:59:21,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:21,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 17:59:21,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600771858] [2020-09-04 17:59:21,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 17:59:21,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:21,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 17:59:21,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-04 17:59:21,886 INFO L87 Difference]: Start difference. First operand 2091 states and 2967 transitions. Second operand 12 states. [2020-09-04 17:59:28,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:28,705 INFO L93 Difference]: Finished difference Result 8991 states and 15078 transitions. [2020-09-04 17:59:28,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-04 17:59:28,706 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 230 [2020-09-04 17:59:28,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:28,760 INFO L225 Difference]: With dead ends: 8991 [2020-09-04 17:59:28,760 INFO L226 Difference]: Without dead ends: 6948 [2020-09-04 17:59:28,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 697 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=499, Invalid=1853, Unknown=0, NotChecked=0, Total=2352 [2020-09-04 17:59:28,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6948 states. [2020-09-04 17:59:29,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6948 to 4943. [2020-09-04 17:59:29,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4943 states. [2020-09-04 17:59:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4943 states to 4943 states and 7731 transitions. [2020-09-04 17:59:29,887 INFO L78 Accepts]: Start accepts. Automaton has 4943 states and 7731 transitions. Word has length 230 [2020-09-04 17:59:29,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:29,889 INFO L479 AbstractCegarLoop]: Abstraction has 4943 states and 7731 transitions. [2020-09-04 17:59:29,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 17:59:29,889 INFO L276 IsEmpty]: Start isEmpty. Operand 4943 states and 7731 transitions. [2020-09-04 17:59:29,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-04 17:59:29,899 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:29,899 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:29,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 17:59:29,903 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:29,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:29,904 INFO L82 PathProgramCache]: Analyzing trace with hash -1577887462, now seen corresponding path program 1 times [2020-09-04 17:59:29,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:29,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815868442] [2020-09-04 17:59:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:29,912 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 17:59:30,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:59:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:30,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:59:30,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 17:59:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 17:59:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:59:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 17:59:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 17:59:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 17:59:30,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:30,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:30,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 17:59:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:30,206 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815868442] [2020-09-04 17:59:30,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:30,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:59:30,207 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723944168] [2020-09-04 17:59:30,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:59:30,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:30,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:59:30,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:59:30,210 INFO L87 Difference]: Start difference. First operand 4943 states and 7731 transitions. Second operand 9 states. [2020-09-04 17:59:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:35,151 INFO L93 Difference]: Finished difference Result 14902 states and 25159 transitions. [2020-09-04 17:59:35,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 17:59:35,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 226 [2020-09-04 17:59:35,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:35,331 INFO L225 Difference]: With dead ends: 14902 [2020-09-04 17:59:35,331 INFO L226 Difference]: Without dead ends: 10009 [2020-09-04 17:59:35,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=244, Invalid=568, Unknown=0, NotChecked=0, Total=812 [2020-09-04 17:59:35,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10009 states. [2020-09-04 17:59:36,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10009 to 8124. [2020-09-04 17:59:36,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8124 states. [2020-09-04 17:59:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8124 states to 8124 states and 13044 transitions. [2020-09-04 17:59:36,684 INFO L78 Accepts]: Start accepts. Automaton has 8124 states and 13044 transitions. Word has length 226 [2020-09-04 17:59:36,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:36,684 INFO L479 AbstractCegarLoop]: Abstraction has 8124 states and 13044 transitions. [2020-09-04 17:59:36,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 17:59:36,685 INFO L276 IsEmpty]: Start isEmpty. Operand 8124 states and 13044 transitions. [2020-09-04 17:59:36,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-04 17:59:36,703 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:36,703 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:36,703 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 17:59:36,703 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:36,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:36,704 INFO L82 PathProgramCache]: Analyzing trace with hash 550596668, now seen corresponding path program 1 times [2020-09-04 17:59:36,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:36,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380930071] [2020-09-04 17:59:36,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:36,710 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:36,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:36,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 17:59:36,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:59:36,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:36,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:59:36,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 17:59:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:36,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 17:59:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:59:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 17:59:36,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:36,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:36,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:36,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:36,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 17:59:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-09-04 17:59:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-04 17:59:36,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:36,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:36,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:36,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:36,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:36,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:37,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:37,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380930071] [2020-09-04 17:59:37,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:37,134 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 17:59:37,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882648064] [2020-09-04 17:59:37,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 17:59:37,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:37,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 17:59:37,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:59:37,137 INFO L87 Difference]: Start difference. First operand 8124 states and 13044 transitions. Second operand 11 states. [2020-09-04 17:59:41,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:41,693 INFO L93 Difference]: Finished difference Result 18545 states and 29578 transitions. [2020-09-04 17:59:41,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 17:59:41,694 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 279 [2020-09-04 17:59:41,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:41,768 INFO L225 Difference]: With dead ends: 18545 [2020-09-04 17:59:41,769 INFO L226 Difference]: Without dead ends: 10470 [2020-09-04 17:59:41,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2020-09-04 17:59:41,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10470 states. [2020-09-04 17:59:42,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10470 to 8112. [2020-09-04 17:59:42,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8112 states. [2020-09-04 17:59:42,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8112 states to 8112 states and 13019 transitions. [2020-09-04 17:59:42,877 INFO L78 Accepts]: Start accepts. Automaton has 8112 states and 13019 transitions. Word has length 279 [2020-09-04 17:59:42,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:42,877 INFO L479 AbstractCegarLoop]: Abstraction has 8112 states and 13019 transitions. [2020-09-04 17:59:42,877 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 17:59:42,877 INFO L276 IsEmpty]: Start isEmpty. Operand 8112 states and 13019 transitions. [2020-09-04 17:59:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-04 17:59:42,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:42,889 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] [2020-09-04 17:59:42,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 17:59:42,889 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:42,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:42,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1424066057, now seen corresponding path program 1 times [2020-09-04 17:59:42,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:42,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413919782] [2020-09-04 17:59:42,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:42,895 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:42,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 17:59:43,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:59:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:59:43,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 17:59:43,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:43,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:43,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 17:59:43,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:59:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 17:59:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 17:59:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 17:59:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:43,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:43,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:43,274 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413919782] [2020-09-04 17:59:43,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:43,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:59:43,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301997279] [2020-09-04 17:59:43,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:59:43,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:43,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:59:43,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:59:43,277 INFO L87 Difference]: Start difference. First operand 8112 states and 13019 transitions. Second operand 10 states. [2020-09-04 17:59:50,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:50,172 INFO L93 Difference]: Finished difference Result 20711 states and 35082 transitions. [2020-09-04 17:59:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 17:59:50,173 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 220 [2020-09-04 17:59:50,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:50,245 INFO L225 Difference]: With dead ends: 20711 [2020-09-04 17:59:50,245 INFO L226 Difference]: Without dead ends: 12650 [2020-09-04 17:59:50,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=227, Invalid=703, Unknown=0, NotChecked=0, Total=930 [2020-09-04 17:59:50,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12650 states. [2020-09-04 17:59:52,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12650 to 10360. [2020-09-04 17:59:52,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10360 states. [2020-09-04 17:59:52,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10360 states to 10360 states and 16036 transitions. [2020-09-04 17:59:52,496 INFO L78 Accepts]: Start accepts. Automaton has 10360 states and 16036 transitions. Word has length 220 [2020-09-04 17:59:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:52,496 INFO L479 AbstractCegarLoop]: Abstraction has 10360 states and 16036 transitions. [2020-09-04 17:59:52,496 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:59:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 10360 states and 16036 transitions. [2020-09-04 17:59:52,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-04 17:59:52,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:52,509 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, 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] [2020-09-04 17:59:52,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 17:59:52,510 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:52,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:52,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1439116596, now seen corresponding path program 1 times [2020-09-04 17:59:52,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:52,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525416938] [2020-09-04 17:59:52,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:52,516 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:52,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 17:59:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:59:52,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:52,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:59:52,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 17:59:52,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:52,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 17:59:52,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:59:52,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-09-04 17:59:52,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-09-04 17:59:52,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 17:59:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:52,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:52,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:52,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:52,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:52,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:52,850 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525416938] [2020-09-04 17:59:52,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:52,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 17:59:52,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863679811] [2020-09-04 17:59:52,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 17:59:52,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:52,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 17:59:52,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-04 17:59:52,852 INFO L87 Difference]: Start difference. First operand 10360 states and 16036 transitions. Second operand 12 states. [2020-09-04 17:59:57,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:57,502 INFO L93 Difference]: Finished difference Result 22681 states and 35804 transitions. [2020-09-04 17:59:57,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 17:59:57,503 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 220 [2020-09-04 17:59:57,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:57,556 INFO L225 Difference]: With dead ends: 22681 [2020-09-04 17:59:57,556 INFO L226 Difference]: Without dead ends: 9487 [2020-09-04 17:59:57,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=248, Invalid=622, Unknown=0, NotChecked=0, Total=870 [2020-09-04 17:59:57,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9487 states. [2020-09-04 17:59:58,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9487 to 7834. [2020-09-04 17:59:58,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7834 states. [2020-09-04 17:59:58,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7834 states to 7834 states and 11228 transitions. [2020-09-04 17:59:58,816 INFO L78 Accepts]: Start accepts. Automaton has 7834 states and 11228 transitions. Word has length 220 [2020-09-04 17:59:58,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:58,816 INFO L479 AbstractCegarLoop]: Abstraction has 7834 states and 11228 transitions. [2020-09-04 17:59:58,816 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 17:59:58,817 INFO L276 IsEmpty]: Start isEmpty. Operand 7834 states and 11228 transitions. [2020-09-04 17:59:58,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-09-04 17:59:58,824 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:58,824 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:58,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 17:59:58,825 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:58,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:58,825 INFO L82 PathProgramCache]: Analyzing trace with hash 219517836, now seen corresponding path program 1 times [2020-09-04 17:59:58,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:58,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956546203] [2020-09-04 17:59:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:58,831 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:58,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:58,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 17:59:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:58,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:59:58,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:58,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:58,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:58,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 17:59:58,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:58,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 17:59:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:58,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:58,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:58,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:59,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 17:59:59,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:59,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 17:59:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:59,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-09-04 17:59:59,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:59,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 17:59:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:59,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-09-04 17:59:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:59,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:59,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:59,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:59,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:59,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:59,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:59,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:59,196 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956546203] [2020-09-04 17:59:59,197 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:59,197 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:59:59,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291472062] [2020-09-04 17:59:59,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:59:59,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:59,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:59:59,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:59:59,199 INFO L87 Difference]: Start difference. First operand 7834 states and 11228 transitions. Second operand 10 states. [2020-09-04 18:00:05,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:05,774 INFO L93 Difference]: Finished difference Result 24734 states and 39030 transitions. [2020-09-04 18:00:05,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 18:00:05,775 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 230 [2020-09-04 18:00:05,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:06,631 INFO L225 Difference]: With dead ends: 24734 [2020-09-04 18:00:06,631 INFO L226 Difference]: Without dead ends: 16951 [2020-09-04 18:00:06,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=264, Invalid=858, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 18:00:06,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16951 states. [2020-09-04 18:00:08,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16951 to 14249. [2020-09-04 18:00:08,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14249 states. [2020-09-04 18:00:08,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14249 states to 14249 states and 20176 transitions. [2020-09-04 18:00:08,607 INFO L78 Accepts]: Start accepts. Automaton has 14249 states and 20176 transitions. Word has length 230 [2020-09-04 18:00:08,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:08,607 INFO L479 AbstractCegarLoop]: Abstraction has 14249 states and 20176 transitions. [2020-09-04 18:00:08,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 18:00:08,608 INFO L276 IsEmpty]: Start isEmpty. Operand 14249 states and 20176 transitions. [2020-09-04 18:00:08,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-09-04 18:00:08,625 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:08,625 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-04 18:00:08,625 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 18:00:08,626 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:08,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:08,626 INFO L82 PathProgramCache]: Analyzing trace with hash -1575682267, now seen corresponding path program 1 times [2020-09-04 18:00:08,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:08,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [831729165] [2020-09-04 18:00:08,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:08,632 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:08,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 18:00:08,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 18:00:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:00:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 18:00:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 18:00:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:08,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:08,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:08,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 18:00:08,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 18:00:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 18:00:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:08,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-09-04 18:00:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 18:00:08,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 18:00:08,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:08,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 18:00:09,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:09,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:09,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:09,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:09,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:09,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:09,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-09-04 18:00:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:09,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-04 18:00:09,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:09,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2020-09-04 18:00:09,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:09,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 18:00:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:09,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2020-09-04 18:00:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-04 18:00:09,072 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [831729165] [2020-09-04 18:00:09,072 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:09,072 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 18:00:09,072 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344401181] [2020-09-04 18:00:09,073 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 18:00:09,073 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:09,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 18:00:09,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-09-04 18:00:09,074 INFO L87 Difference]: Start difference. First operand 14249 states and 20176 transitions. Second operand 12 states. [2020-09-04 18:00:14,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:14,809 INFO L93 Difference]: Finished difference Result 30812 states and 44003 transitions. [2020-09-04 18:00:14,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-04 18:00:14,810 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 280 [2020-09-04 18:00:14,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:14,874 INFO L225 Difference]: With dead ends: 30812 [2020-09-04 18:00:14,874 INFO L226 Difference]: Without dead ends: 16618 [2020-09-04 18:00:14,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 298 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=310, Invalid=1022, Unknown=0, NotChecked=0, Total=1332 [2020-09-04 18:00:14,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16618 states. [2020-09-04 18:00:16,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16618 to 12263. [2020-09-04 18:00:16,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12263 states. [2020-09-04 18:00:16,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12263 states to 12263 states and 16279 transitions. [2020-09-04 18:00:16,591 INFO L78 Accepts]: Start accepts. Automaton has 12263 states and 16279 transitions. Word has length 280 [2020-09-04 18:00:16,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:16,591 INFO L479 AbstractCegarLoop]: Abstraction has 12263 states and 16279 transitions. [2020-09-04 18:00:16,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 18:00:16,591 INFO L276 IsEmpty]: Start isEmpty. Operand 12263 states and 16279 transitions. [2020-09-04 18:00:16,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-09-04 18:00:16,604 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:16,604 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, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:00:16,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 18:00:16,605 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:16,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:16,605 INFO L82 PathProgramCache]: Analyzing trace with hash 308677715, now seen corresponding path program 1 times [2020-09-04 18:00:16,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:16,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635251484] [2020-09-04 18:00:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:16,613 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:16,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 18:00:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 18:00:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:00:16,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 18:00:16,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 18:00:16,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:16,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:16,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 18:00:16,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 18:00:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-09-04 18:00:16,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:16,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:16,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 18:00:16,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:16,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-09-04 18:00:16,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2020-09-04 18:00:16,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2020-09-04 18:00:16,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-09-04 18:00:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:16,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:16,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:16,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:16,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:16,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-09-04 18:00:16,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:16,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 18:00:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:16,975 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-04 18:00:16,975 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635251484] [2020-09-04 18:00:16,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:16,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 18:00:16,976 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145634920] [2020-09-04 18:00:16,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 18:00:16,977 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:16,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 18:00:16,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-04 18:00:16,977 INFO L87 Difference]: Start difference. First operand 12263 states and 16279 transitions. Second operand 11 states. [2020-09-04 18:00:22,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:22,187 INFO L93 Difference]: Finished difference Result 27060 states and 35790 transitions. [2020-09-04 18:00:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 18:00:22,188 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 350 [2020-09-04 18:00:22,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:22,236 INFO L225 Difference]: With dead ends: 27060 [2020-09-04 18:00:22,237 INFO L226 Difference]: Without dead ends: 14889 [2020-09-04 18:00:22,275 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=237, Invalid=693, Unknown=0, NotChecked=0, Total=930 [2020-09-04 18:00:22,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14889 states. [2020-09-04 18:00:23,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14889 to 12212. [2020-09-04 18:00:23,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12212 states. [2020-09-04 18:00:23,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12212 states to 12212 states and 16213 transitions. [2020-09-04 18:00:23,836 INFO L78 Accepts]: Start accepts. Automaton has 12212 states and 16213 transitions. Word has length 350 [2020-09-04 18:00:23,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:23,836 INFO L479 AbstractCegarLoop]: Abstraction has 12212 states and 16213 transitions. [2020-09-04 18:00:23,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 18:00:23,837 INFO L276 IsEmpty]: Start isEmpty. Operand 12212 states and 16213 transitions. [2020-09-04 18:00:23,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-09-04 18:00:23,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:23,850 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:00:23,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 18:00:23,850 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:23,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:23,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1226891913, now seen corresponding path program 1 times [2020-09-04 18:00:23,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:23,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587712306] [2020-09-04 18:00:23,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:23,858 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:24,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-09-04 18:00:24,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 18:00:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:00:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-04 18:00:24,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-04 18:00:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:24,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-09-04 18:00:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-09-04 18:00:24,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-09-04 18:00:24,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 18:00:24,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-09-04 18:00:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-09-04 18:00:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:24,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:24,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:24,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-04 18:00:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:24,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:24,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:24,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 18:00:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 18:00:24,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587712306] [2020-09-04 18:00:24,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:24,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-04 18:00:24,450 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298305965] [2020-09-04 18:00:24,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-04 18:00:24,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:24,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-04 18:00:24,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-04 18:00:24,452 INFO L87 Difference]: Start difference. First operand 12212 states and 16213 transitions. Second operand 15 states. [2020-09-04 18:00:35,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:35,328 INFO L93 Difference]: Finished difference Result 21296 states and 28380 transitions. [2020-09-04 18:00:35,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-09-04 18:00:35,328 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 295 [2020-09-04 18:00:35,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:35,355 INFO L225 Difference]: With dead ends: 21296 [2020-09-04 18:00:35,355 INFO L226 Difference]: Without dead ends: 9178 [2020-09-04 18:00:35,400 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1405 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1168, Invalid=3944, Unknown=0, NotChecked=0, Total=5112 [2020-09-04 18:00:35,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9178 states. [2020-09-04 18:00:36,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9178 to 7287. [2020-09-04 18:00:36,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7287 states. [2020-09-04 18:00:36,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7287 states to 7287 states and 8914 transitions. [2020-09-04 18:00:36,298 INFO L78 Accepts]: Start accepts. Automaton has 7287 states and 8914 transitions. Word has length 295 [2020-09-04 18:00:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:36,299 INFO L479 AbstractCegarLoop]: Abstraction has 7287 states and 8914 transitions. [2020-09-04 18:00:36,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-04 18:00:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 7287 states and 8914 transitions. [2020-09-04 18:00:36,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-09-04 18:00:36,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:36,311 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-04 18:00:36,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 18:00:36,311 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:36,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:36,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1144377897, now seen corresponding path program 1 times [2020-09-04 18:00:36,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:36,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547956490] [2020-09-04 18:00:36,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:36,320 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 18:00:36,377 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 18:00:36,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 18:00:36,432 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 18:00:36,617 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 18:00:36,617 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 18:00:36,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 18:00:36,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 06:00:36 BoogieIcfgContainer [2020-09-04 18:00:36,695 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 18:00:36,699 INFO L168 Benchmark]: Toolchain (without parser) took 90045.88 ms. Allocated memory was 136.8 MB in the beginning and 2.9 GB in the end (delta: 2.8 GB). Free memory was 99.4 MB in the beginning and 1.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2020-09-04 18:00:36,700 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 18:00:36,701 INFO L168 Benchmark]: CACSL2BoogieTranslator took 514.32 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 179.4 MB in the end (delta: -80.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-09-04 18:00:36,702 INFO L168 Benchmark]: Boogie Preprocessor took 57.59 ms. Allocated memory is still 200.8 MB. Free memory was 179.4 MB in the beginning and 177.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. [2020-09-04 18:00:36,710 INFO L168 Benchmark]: RCFGBuilder took 706.17 ms. Allocated memory is still 200.8 MB. Free memory was 177.0 MB in the beginning and 134.4 MB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. [2020-09-04 18:00:36,714 INFO L168 Benchmark]: TraceAbstraction took 88761.97 ms. Allocated memory was 200.8 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 133.7 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2020-09-04 18:00:36,718 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 118.1 MB in the beginning and 117.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 514.32 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 99.2 MB in the beginning and 179.4 MB in the end (delta: -80.2 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 57.59 ms. Allocated memory is still 200.8 MB. Free memory was 179.4 MB in the beginning and 177.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 706.17 ms. Allocated memory is still 200.8 MB. Free memory was 177.0 MB in the beginning and 134.4 MB in the end (delta: 42.6 MB). Peak memory consumption was 42.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 88761.97 ms. Allocated memory was 200.8 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 133.7 MB in the beginning and 1.4 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 11]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L15] int m_pc = 0; [L16] int t1_pc = 0; [L17] int t2_pc = 0; [L18] int m_st ; [L19] int t1_st ; [L20] int t2_st ; [L21] int m_i ; [L22] int t1_i ; [L23] int t2_i ; [L24] int M_E = 2; [L25] int T1_E = 2; [L26] int T2_E = 2; [L27] int E_1 = 2; [L28] int E_2 = 2; [L563] int __retres1 ; [L567] CALL init_model() [L477] m_i = 1 [L478] t1_i = 1 [L479] t2_i = 1 [L567] RET init_model() [L568] CALL start_simulation() [L504] int kernel_st ; [L505] int tmp ; [L506] int tmp___0 ; [L510] kernel_st = 0 [L511] FCALL update_channels() [L512] CALL init_threads() [L211] COND TRUE m_i == 1 [L212] m_st = 0 [L216] COND TRUE t1_i == 1 [L217] t1_st = 0 [L221] COND TRUE t2_i == 1 [L222] t2_st = 0 [L512] RET init_threads() [L513] CALL fire_delta_events() [L324] COND FALSE !(M_E == 0) [L329] COND FALSE !(T1_E == 0) [L334] COND FALSE !(T2_E == 0) [L339] COND FALSE !(E_1 == 0) [L344] COND FALSE !(E_2 == 0) [L513] RET fire_delta_events() [L514] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND FALSE !(t1_pc == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND FALSE !(t2_pc == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L514] RET activate_threads() [L515] CALL reset_delta_events() [L357] COND FALSE !(M_E == 1) [L362] COND FALSE !(T1_E == 1) [L367] COND FALSE !(T2_E == 1) [L372] COND FALSE !(E_1 == 1) [L377] COND FALSE !(E_2 == 1) [L515] RET reset_delta_events() [L518] COND TRUE 1 [L521] kernel_st = 1 [L522] CALL eval() [L257] int tmp ; [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND FALSE !(\read(tmp_ndt_1)) [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND TRUE t1_pc == 0 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND TRUE t2_pc == 0 [L124] COND TRUE 1 [L126] t2_pc = 1 [L127] t2_st = 2 [L305] RET transmit2() [L261] COND TRUE 1 [L264] CALL, EXPR exists_runnable_thread() [L231] int __retres1 ; [L234] COND TRUE m_st == 0 [L235] __retres1 = 1 [L252] return (__retres1); [L264] RET, EXPR exists_runnable_thread() [L264] tmp = exists_runnable_thread() [L266] COND TRUE \read(tmp) [L271] COND TRUE m_st == 0 [L272] int tmp_ndt_1; [L273] tmp_ndt_1 = __VERIFIER_nondet_int() [L274] COND TRUE \read(tmp_ndt_1) [L276] m_st = 1 [L277] CALL master() [L37] COND TRUE m_pc == 0 [L48] COND TRUE 1 [L51] E_1 = 1 [L52] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND FALSE !(m_pc == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND TRUE E_1 == 1 [L167] __retres1 = 1 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND TRUE \read(tmp___0) [L404] t1_st = 0 [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND FALSE !(E_2 == 1) [L194] __retres1 = 0 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND FALSE !(\read(tmp___1)) [L425] RET activate_threads() [L52] RET immediate_notify() [L53] E_1 = 2 [L56] COND TRUE 1 [L58] m_pc = 1 [L59] m_st = 2 [L277] RET master() [L285] COND TRUE t1_st == 0 [L286] int tmp_ndt_2; [L287] tmp_ndt_2 = __VERIFIER_nondet_int() [L288] COND TRUE \read(tmp_ndt_2) [L290] t1_st = 1 [L291] CALL transmit1() [L78] COND FALSE !(t1_pc == 0) [L81] COND TRUE t1_pc == 1 [L97] E_2 = 1 [L98] CALL immediate_notify() [L425] CALL activate_threads() [L387] int tmp ; [L388] int tmp___0 ; [L389] int tmp___1 ; [L393] CALL, EXPR is_master_triggered() [L143] int __retres1 ; [L146] COND TRUE m_pc == 1 [L147] COND FALSE !(M_E == 1) [L156] __retres1 = 0 [L158] return (__retres1); [L393] RET, EXPR is_master_triggered() [L393] tmp = is_master_triggered() [L395] COND FALSE !(\read(tmp)) [L401] CALL, EXPR is_transmit1_triggered() [L162] int __retres1 ; [L165] COND TRUE t1_pc == 1 [L166] COND FALSE !(E_1 == 1) [L175] __retres1 = 0 [L177] return (__retres1); [L401] RET, EXPR is_transmit1_triggered() [L401] tmp___0 = is_transmit1_triggered() [L403] COND FALSE !(\read(tmp___0)) [L409] CALL, EXPR is_transmit2_triggered() [L181] int __retres1 ; [L184] COND TRUE t2_pc == 1 [L185] COND TRUE E_2 == 1 [L186] __retres1 = 1 [L196] return (__retres1); [L409] RET, EXPR is_transmit2_triggered() [L409] tmp___1 = is_transmit2_triggered() [L411] COND TRUE \read(tmp___1) [L412] t2_st = 0 [L425] RET activate_threads() [L98] RET immediate_notify() [L99] E_2 = 2 [L89] COND TRUE 1 [L91] t1_pc = 1 [L92] t1_st = 2 [L291] RET transmit1() [L299] COND TRUE t2_st == 0 [L300] int tmp_ndt_3; [L301] tmp_ndt_3 = __VERIFIER_nondet_int() [L302] COND TRUE \read(tmp_ndt_3) [L304] t2_st = 1 [L305] CALL transmit2() [L113] COND FALSE !(t2_pc == 0) [L116] COND TRUE t2_pc == 1 [L132] CALL error() [L11] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 257 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 88.6s, OverallIterations: 14, TraceHistogramMax: 5, AutomataDifference: 69.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4050 SDtfs, 21188 SDslu, 1642 SDs, 0 SdLazy, 25121 SolverSat, 6402 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 30.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1021 GetRequests, 629 SyntacticMatches, 0 SemanticMatches, 392 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3793 ImplicationChecksByTransitivity, 10.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14249occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 13.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 23409 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...