/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.02.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:58:55,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:58:55,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:58:55,046 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:58:55,046 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:58:55,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:58:55,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:58:55,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:58:55,056 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:58:55,057 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:58:55,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:58:55,062 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:58:55,062 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:58:55,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:58:55,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:58:55,065 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:58:55,066 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:58:55,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:58:55,068 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:58:55,070 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:58:55,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:58:55,073 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:58:55,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:58:55,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:58:55,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 17:58:55,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 17:58:55,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 17:58:55,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 17:58:55,079 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 17:58:55,080 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 17:58:55,080 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 17:58:55,081 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 17:58:55,082 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 17:58:55,083 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 17:58:55,084 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 17:58:55,084 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 17:58:55,085 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 17:58:55,085 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 17:58:55,085 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:58:55,086 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:58:55,087 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:58:55,088 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 17:58:55,099 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:58:55,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:58:55,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:58:55,101 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:58:55,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:58:55,101 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:58:55,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:58:55,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:58:55,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:58:55,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:58:55,102 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:58:55,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:58:55,103 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:58:55,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:58:55,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:58:55,103 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:58:55,103 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:58:55,104 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:58:55,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:58:55,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:58:55,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:58:55,104 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:58:55,105 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:58:55,528 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:58:55,545 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:58:55,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:58:55,553 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:58:55,554 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:58:55,555 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-09-04 17:58:55,635 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3bd24beb/37091fcaf1da4db1ac9ac80aec93d382/FLAGa777ed96e [2020-09-04 17:58:56,225 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:58:56,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/systemc/token_ring.02.cil-2.c [2020-09-04 17:58:56,239 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3bd24beb/37091fcaf1da4db1ac9ac80aec93d382/FLAGa777ed96e [2020-09-04 17:58:56,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f3bd24beb/37091fcaf1da4db1ac9ac80aec93d382 [2020-09-04 17:58:56,542 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:58:56,545 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:58:56,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:58:56,548 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:58:56,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:58:56,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:58:56" (1/1) ... [2020-09-04 17:58:56,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f2544e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:58:56, skipping insertion in model container [2020-09-04 17:58:56,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:58:56" (1/1) ... [2020-09-04 17:58:56,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:58:56,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:58:56,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:58:56,933 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:58:57,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:58:57,088 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:58:57,088 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:58:57 WrapperNode [2020-09-04 17:58:57,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:58:57,089 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:58:57,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:58:57,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:58:57,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:58:57" (1/1) ... [2020-09-04 17:58:57,103 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:58:57" (1/1) ... [2020-09-04 17:58:57,111 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:58:57" (1/1) ... [2020-09-04 17:58:57,111 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:58:57" (1/1) ... [2020-09-04 17:58:57,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:58:57" (1/1) ... [2020-09-04 17:58:57,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:58:57" (1/1) ... [2020-09-04 17:58:57,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:58:57" (1/1) ... [2020-09-04 17:58:57,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:58:57,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:58:57,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:58:57,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:58:57,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:58:57" (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 17:58:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:58:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:58:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-09-04 17:58:57,232 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-09-04 17:58:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-09-04 17:58:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-09-04 17:58:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-09-04 17:58:57,233 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-09-04 17:58:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-09-04 17:58:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-09-04 17:58:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-09-04 17:58:57,234 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-09-04 17:58:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-09-04 17:58:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-09-04 17:58:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-09-04 17:58:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-09-04 17:58:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-09-04 17:58:57,235 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-09-04 17:58:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-09-04 17:58:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-09-04 17:58:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-09-04 17:58:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-09-04 17:58:57,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:58:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:58:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-09-04 17:58:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-09-04 17:58:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-09-04 17:58:57,237 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-09-04 17:58:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-09-04 17:58:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:58:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-09-04 17:58:57,238 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-09-04 17:58:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-09-04 17:58:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-09-04 17:58:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-09-04 17:58:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-09-04 17:58:57,241 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-09-04 17:58:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-09-04 17:58:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-09-04 17:58:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-09-04 17:58:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-09-04 17:58:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-09-04 17:58:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-09-04 17:58:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-09-04 17:58:57,242 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-09-04 17:58:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:58:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:58:57,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:58:57,914 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:58:57,914 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-09-04 17:58:57,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:58:57 BoogieIcfgContainer [2020-09-04 17:58:57,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:58:57,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:58:57,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:58:57,928 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:58:57,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:58:56" (1/3) ... [2020-09-04 17:58:57,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475a3eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:58:57, skipping insertion in model container [2020-09-04 17:58:57,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:58:57" (2/3) ... [2020-09-04 17:58:57,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@475a3eef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:58:57, skipping insertion in model container [2020-09-04 17:58:57,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:58:57" (3/3) ... [2020-09-04 17:58:57,932 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.02.cil-2.c [2020-09-04 17:58:57,944 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:58:57,955 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:58:57,977 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:58:58,002 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:58:58,002 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:58:58,002 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:58:58,002 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:58:58,002 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:58:58,002 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:58:58,003 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:58:58,003 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:58:58,026 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states. [2020-09-04 17:58:58,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-04 17:58:58,049 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:58:58,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:58:58,051 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:58:58,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:58:58,059 INFO L82 PathProgramCache]: Analyzing trace with hash 356343399, now seen corresponding path program 1 times [2020-09-04 17:58:58,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:58:58,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198961901] [2020-09-04 17:58:58,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:58:58,143 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:58:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:58:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:58:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:58:58,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 17:58:58,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 17:58:58,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:58:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:58:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:58:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:58:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 17:58:58,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 17:58:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:58:58,756 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 17:58:58,758 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198961901] [2020-09-04 17:58:58,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:58:58,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 17:58:58,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746087819] [2020-09-04 17:58:58,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 17:58:58,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:58:58,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 17:58:58,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-04 17:58:58,789 INFO L87 Difference]: Start difference. First operand 284 states. Second operand 7 states. [2020-09-04 17:59:01,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:01,923 INFO L93 Difference]: Finished difference Result 1032 states and 1419 transitions. [2020-09-04 17:59:01,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-04 17:59:01,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-09-04 17:59:01,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:01,982 INFO L225 Difference]: With dead ends: 1032 [2020-09-04 17:59:01,983 INFO L226 Difference]: Without dead ends: 774 [2020-09-04 17:59:01,998 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-09-04 17:59:02,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2020-09-04 17:59:02,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 562. [2020-09-04 17:59:02,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 562 states. [2020-09-04 17:59:02,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 711 transitions. [2020-09-04 17:59:02,232 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 711 transitions. Word has length 134 [2020-09-04 17:59:02,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:02,233 INFO L479 AbstractCegarLoop]: Abstraction has 562 states and 711 transitions. [2020-09-04 17:59:02,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 17:59:02,234 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 711 transitions. [2020-09-04 17:59:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-09-04 17:59:02,261 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:02,261 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:02,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:59:02,262 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:02,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:02,263 INFO L82 PathProgramCache]: Analyzing trace with hash 1876371016, now seen corresponding path program 1 times [2020-09-04 17:59:02,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:02,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549028714] [2020-09-04 17:59:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:02,270 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:59:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 17:59:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 17:59:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:59:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:02,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:02,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 17:59:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 17:59:02,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 17:59:02,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 17:59:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:02,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-09-04 17:59:02,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:02,677 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-04 17:59:02,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549028714] [2020-09-04 17:59:02,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:02,678 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 17:59:02,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487577949] [2020-09-04 17:59:02,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 17:59:02,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:02,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 17:59:02,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-04 17:59:02,681 INFO L87 Difference]: Start difference. First operand 562 states and 711 transitions. Second operand 9 states. [2020-09-04 17:59:07,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:07,484 INFO L93 Difference]: Finished difference Result 2088 states and 2801 transitions. [2020-09-04 17:59:07,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 17:59:07,489 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 213 [2020-09-04 17:59:07,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:07,503 INFO L225 Difference]: With dead ends: 2088 [2020-09-04 17:59:07,503 INFO L226 Difference]: Without dead ends: 1575 [2020-09-04 17:59:07,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-09-04 17:59:07,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1575 states. [2020-09-04 17:59:07,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1575 to 1143. [2020-09-04 17:59:07,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1143 states. [2020-09-04 17:59:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1143 states to 1143 states and 1495 transitions. [2020-09-04 17:59:07,707 INFO L78 Accepts]: Start accepts. Automaton has 1143 states and 1495 transitions. Word has length 213 [2020-09-04 17:59:07,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:07,708 INFO L479 AbstractCegarLoop]: Abstraction has 1143 states and 1495 transitions. [2020-09-04 17:59:07,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 17:59:07,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1143 states and 1495 transitions. [2020-09-04 17:59:07,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-09-04 17:59:07,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:07,721 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:07,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:59:07,721 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:07,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:07,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1783560722, now seen corresponding path program 1 times [2020-09-04 17:59:07,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:07,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [647880609] [2020-09-04 17:59:07,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:07,732 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:07,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:59:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:07,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 17:59:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 17:59:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:59:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:07,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 17:59:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 17:59:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:07,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-09-04 17:59:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 17:59:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 17:59:08,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-09-04 17:59:08,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2020-09-04 17:59:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 17:59:08,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:08,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 17:59:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 17:59:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2020-09-04 17:59:08,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:08,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:08,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:08,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:59:08,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 17:59:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-09-04 17:59:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:08,472 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-09-04 17:59:08,473 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [647880609] [2020-09-04 17:59:08,473 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:08,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:59:08,475 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617420744] [2020-09-04 17:59:08,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:59:08,476 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:08,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:59:08,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:59:08,477 INFO L87 Difference]: Start difference. First operand 1143 states and 1495 transitions. Second operand 10 states. [2020-09-04 17:59:11,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:11,431 INFO L93 Difference]: Finished difference Result 2749 states and 3637 transitions. [2020-09-04 17:59:11,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-04 17:59:11,436 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 351 [2020-09-04 17:59:11,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:11,450 INFO L225 Difference]: With dead ends: 2749 [2020-09-04 17:59:11,450 INFO L226 Difference]: Without dead ends: 1653 [2020-09-04 17:59:11,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=180, Invalid=470, Unknown=0, NotChecked=0, Total=650 [2020-09-04 17:59:11,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2020-09-04 17:59:11,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1131. [2020-09-04 17:59:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1131 states. [2020-09-04 17:59:11,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1476 transitions. [2020-09-04 17:59:11,629 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1476 transitions. Word has length 351 [2020-09-04 17:59:11,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:11,630 INFO L479 AbstractCegarLoop]: Abstraction has 1131 states and 1476 transitions. [2020-09-04 17:59:11,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:59:11,630 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1476 transitions. [2020-09-04 17:59:11,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2020-09-04 17:59:11,637 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:11,637 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:11,638 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:59:11,638 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:11,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:11,638 INFO L82 PathProgramCache]: Analyzing trace with hash -1786251854, now seen corresponding path program 1 times [2020-09-04 17:59:11,639 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:11,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819496089] [2020-09-04 17:59:11,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:11,645 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:11,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:11,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:59:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 17:59:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 17:59:11,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:59:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:11,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 17:59:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 17:59:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 17:59:11,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 17:59:11,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:11,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:11,932 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 3 [2020-09-04 17:59:11,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 17:59:12,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-09-04 17:59:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2020-09-04 17:59:12,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:12,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:59:12,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 17:59:12,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2020-09-04 17:59:12,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:12,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 17:59:12,314 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819496089] [2020-09-04 17:59:12,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:12,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 17:59:12,315 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188295490] [2020-09-04 17:59:12,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 17:59:12,316 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:12,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 17:59:12,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-09-04 17:59:12,317 INFO L87 Difference]: Start difference. First operand 1131 states and 1476 transitions. Second operand 12 states. [2020-09-04 17:59:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:15,799 INFO L93 Difference]: Finished difference Result 2759 states and 3707 transitions. [2020-09-04 17:59:15,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-04 17:59:15,801 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 275 [2020-09-04 17:59:15,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:15,814 INFO L225 Difference]: With dead ends: 2759 [2020-09-04 17:59:15,815 INFO L226 Difference]: Without dead ends: 1334 [2020-09-04 17:59:15,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-09-04 17:59:15,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-09-04 17:59:16,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 924. [2020-09-04 17:59:16,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-09-04 17:59:16,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1166 transitions. [2020-09-04 17:59:16,051 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1166 transitions. Word has length 275 [2020-09-04 17:59:16,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:16,052 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1166 transitions. [2020-09-04 17:59:16,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 17:59:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1166 transitions. [2020-09-04 17:59:16,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-04 17:59:16,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:16,058 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:16,058 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:59:16,059 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:16,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:16,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1759472638, now seen corresponding path program 2 times [2020-09-04 17:59:16,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:16,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318254156] [2020-09-04 17:59:16,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:16,067 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:16,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:59:16,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 17:59:16,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 17:59:16,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:59:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:16,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:16,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:16,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 17:59:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 17:59:16,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 17:59:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 17:59:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:16,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-09-04 17:59:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:16,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:59:16,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 17:59:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-09-04 17:59:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:16,587 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 17:59:16,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318254156] [2020-09-04 17:59:16,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:16,588 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:59:16,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805099139] [2020-09-04 17:59:16,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:59:16,589 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:16,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:59:16,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:59:16,590 INFO L87 Difference]: Start difference. First operand 924 states and 1166 transitions. Second operand 10 states. [2020-09-04 17:59:21,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:21,646 INFO L93 Difference]: Finished difference Result 3431 states and 4638 transitions. [2020-09-04 17:59:21,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 17:59:21,651 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 274 [2020-09-04 17:59:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:21,669 INFO L225 Difference]: With dead ends: 3431 [2020-09-04 17:59:21,669 INFO L226 Difference]: Without dead ends: 2554 [2020-09-04 17:59:21,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2020-09-04 17:59:21,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2554 states. [2020-09-04 17:59:21,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2554 to 1811. [2020-09-04 17:59:21,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1811 states. [2020-09-04 17:59:21,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2279 transitions. [2020-09-04 17:59:21,947 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2279 transitions. Word has length 274 [2020-09-04 17:59:21,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:21,947 INFO L479 AbstractCegarLoop]: Abstraction has 1811 states and 2279 transitions. [2020-09-04 17:59:21,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:59:21,947 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2279 transitions. [2020-09-04 17:59:21,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-09-04 17:59:21,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:21,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:21,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 17:59:21,956 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:21,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:21,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1933431879, now seen corresponding path program 1 times [2020-09-04 17:59:21,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:21,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909600343] [2020-09-04 17:59:21,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:21,962 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:21,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:59:22,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 17:59:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 17:59:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:59:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:22,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:22,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 17:59:22,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 17:59:22,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 17:59:22,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 17:59:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:22,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:22,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-09-04 17:59:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:22,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:59:22,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 17:59:22,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-09-04 17:59:22,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:22,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:59:22,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909600343] [2020-09-04 17:59:22,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:22,491 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:59:22,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526705315] [2020-09-04 17:59:22,492 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:59:22,493 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:22,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:59:22,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:59:22,493 INFO L87 Difference]: Start difference. First operand 1811 states and 2279 transitions. Second operand 10 states. [2020-09-04 17:59:27,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:27,603 INFO L93 Difference]: Finished difference Result 6312 states and 8446 transitions. [2020-09-04 17:59:27,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 17:59:27,604 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 274 [2020-09-04 17:59:27,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:27,636 INFO L225 Difference]: With dead ends: 6312 [2020-09-04 17:59:27,637 INFO L226 Difference]: Without dead ends: 4548 [2020-09-04 17:59:27,654 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=235, Invalid=757, Unknown=0, NotChecked=0, Total=992 [2020-09-04 17:59:27,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2020-09-04 17:59:28,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 3449. [2020-09-04 17:59:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3449 states. [2020-09-04 17:59:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3449 states to 3449 states and 4307 transitions. [2020-09-04 17:59:28,358 INFO L78 Accepts]: Start accepts. Automaton has 3449 states and 4307 transitions. Word has length 274 [2020-09-04 17:59:28,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:28,359 INFO L479 AbstractCegarLoop]: Abstraction has 3449 states and 4307 transitions. [2020-09-04 17:59:28,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:59:28,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3449 states and 4307 transitions. [2020-09-04 17:59:28,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-09-04 17:59:28,371 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:28,372 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:28,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 17:59:28,373 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:28,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:28,373 INFO L82 PathProgramCache]: Analyzing trace with hash 980135473, now seen corresponding path program 1 times [2020-09-04 17:59:28,373 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:28,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860692854] [2020-09-04 17:59:28,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:28,392 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:28,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:59:28,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 17:59:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 17:59:28,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:59:28,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:28,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:28,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:28,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 17:59:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 17:59:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 17:59:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:59:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-04 17:59:28,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-09-04 17:59:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 17:59:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-09-04 17:59:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:28,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:28,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-09-04 17:59:28,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-09-04 17:59:28,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2020-09-04 17:59:28,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 17:59:28,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-09-04 17:59:28,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2020-09-04 17:59:28,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 17:59:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:28,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:28,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-09-04 17:59:28,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:28,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:59:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 17:59:28,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 391 [2020-09-04 17:59:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:28,905 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-04 17:59:28,906 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860692854] [2020-09-04 17:59:28,906 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:28,906 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:59:28,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684700283] [2020-09-04 17:59:28,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:59:28,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:28,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:59:28,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:59:28,908 INFO L87 Difference]: Start difference. First operand 3449 states and 4307 transitions. Second operand 10 states. [2020-09-04 17:59:33,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:33,260 INFO L93 Difference]: Finished difference Result 8271 states and 10720 transitions. [2020-09-04 17:59:33,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-09-04 17:59:33,261 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 418 [2020-09-04 17:59:33,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:33,294 INFO L225 Difference]: With dead ends: 8271 [2020-09-04 17:59:33,295 INFO L226 Difference]: Without dead ends: 4870 [2020-09-04 17:59:33,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 266 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=294, Invalid=762, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 17:59:33,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2020-09-04 17:59:34,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 3453. [2020-09-04 17:59:34,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3453 states. [2020-09-04 17:59:34,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3453 states to 3453 states and 4283 transitions. [2020-09-04 17:59:34,022 INFO L78 Accepts]: Start accepts. Automaton has 3453 states and 4283 transitions. Word has length 418 [2020-09-04 17:59:34,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:34,023 INFO L479 AbstractCegarLoop]: Abstraction has 3453 states and 4283 transitions. [2020-09-04 17:59:34,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:59:34,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3453 states and 4283 transitions. [2020-09-04 17:59:34,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-04 17:59:34,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:34,034 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:34,034 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 17:59:34,035 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:34,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:34,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1319590809, now seen corresponding path program 1 times [2020-09-04 17:59:34,035 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:34,036 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096403031] [2020-09-04 17:59:34,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:34,043 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:34,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:34,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:59:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 17:59:34,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 17:59:34,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:59:34,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:34,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:34,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:34,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 17:59:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 17:59:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 17:59:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 17:59:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:34,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:34,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:34,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-09-04 17:59:34,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-09-04 17:59:34,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-09-04 17:59:34,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:59:34,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 17:59:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 17:59:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:34,415 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 17:59:34,416 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096403031] [2020-09-04 17:59:34,416 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:34,416 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-04 17:59:34,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452638352] [2020-09-04 17:59:34,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-04 17:59:34,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:34,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-04 17:59:34,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-04 17:59:34,418 INFO L87 Difference]: Start difference. First operand 3453 states and 4283 transitions. Second operand 11 states. [2020-09-04 17:59:42,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:42,045 INFO L93 Difference]: Finished difference Result 13187 states and 18026 transitions. [2020-09-04 17:59:42,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-09-04 17:59:42,046 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 304 [2020-09-04 17:59:42,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:42,106 INFO L225 Difference]: With dead ends: 13187 [2020-09-04 17:59:42,106 INFO L226 Difference]: Without dead ends: 9782 [2020-09-04 17:59:42,139 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 381 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=338, Invalid=1144, Unknown=0, NotChecked=0, Total=1482 [2020-09-04 17:59:42,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9782 states. [2020-09-04 17:59:43,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9782 to 7023. [2020-09-04 17:59:43,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7023 states. [2020-09-04 17:59:43,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7023 states to 7023 states and 8851 transitions. [2020-09-04 17:59:43,349 INFO L78 Accepts]: Start accepts. Automaton has 7023 states and 8851 transitions. Word has length 304 [2020-09-04 17:59:43,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:43,349 INFO L479 AbstractCegarLoop]: Abstraction has 7023 states and 8851 transitions. [2020-09-04 17:59:43,349 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-04 17:59:43,350 INFO L276 IsEmpty]: Start isEmpty. Operand 7023 states and 8851 transitions. [2020-09-04 17:59:43,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-09-04 17:59:43,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:43,371 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:43,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 17:59:43,371 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:43,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:43,371 INFO L82 PathProgramCache]: Analyzing trace with hash 759375311, now seen corresponding path program 1 times [2020-09-04 17:59:43,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:43,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140908752] [2020-09-04 17:59:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:43,379 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:43,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:59:43,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:43,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 17:59:43,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 17:59:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:59:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 17:59:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 17:59:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 17:59:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 17:59:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:43,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:43,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:43,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-09-04 17:59:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-09-04 17:59:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-09-04 17:59:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:43,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:43,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:59:43,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 17:59:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-09-04 17:59:43,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:43,760 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 17:59:43,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140908752] [2020-09-04 17:59:43,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:43,762 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 17:59:43,768 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867601297] [2020-09-04 17:59:43,769 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 17:59:43,770 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:43,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 17:59:43,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-04 17:59:43,771 INFO L87 Difference]: Start difference. First operand 7023 states and 8851 transitions. Second operand 10 states. [2020-09-04 17:59:47,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:47,770 INFO L93 Difference]: Finished difference Result 14183 states and 18206 transitions. [2020-09-04 17:59:47,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 17:59:47,770 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 305 [2020-09-04 17:59:47,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:47,808 INFO L225 Difference]: With dead ends: 14183 [2020-09-04 17:59:47,809 INFO L226 Difference]: Without dead ends: 7206 [2020-09-04 17:59:47,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=189, Invalid=513, Unknown=0, NotChecked=0, Total=702 [2020-09-04 17:59:47,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7206 states. [2020-09-04 17:59:48,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7206 to 5295. [2020-09-04 17:59:48,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5295 states. [2020-09-04 17:59:48,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 6650 transitions. [2020-09-04 17:59:48,611 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 6650 transitions. Word has length 305 [2020-09-04 17:59:48,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:59:48,611 INFO L479 AbstractCegarLoop]: Abstraction has 5295 states and 6650 transitions. [2020-09-04 17:59:48,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 17:59:48,611 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 6650 transitions. [2020-09-04 17:59:48,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-09-04 17:59:48,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:59:48,624 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:59:48,624 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 17:59:48,624 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:59:48,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:59:48,625 INFO L82 PathProgramCache]: Analyzing trace with hash 551470748, now seen corresponding path program 1 times [2020-09-04 17:59:48,625 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:59:48,625 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225433032] [2020-09-04 17:59:48,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:59:48,632 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:59:48,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:48,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 17:59:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 17:59:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 17:59:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 17:59:48,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 17:59:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:48,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 17:59:48,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 17:59:48,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 17:59:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 17:59:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-09-04 17:59:48,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-09-04 17:59:48,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 17:59:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 17:59:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 17:59:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-09-04 17:59:48,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 17:59:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:48,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:59:48,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:49,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 17:59:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:49,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 17:59:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:49,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 17:59:49,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:49,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2020-09-04 17:59:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:59:49,110 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 17:59:49,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225433032] [2020-09-04 17:59:49,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:59:49,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 17:59:49,111 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277404820] [2020-09-04 17:59:49,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 17:59:49,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:59:49,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 17:59:49,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-09-04 17:59:49,113 INFO L87 Difference]: Start difference. First operand 5295 states and 6650 transitions. Second operand 14 states. [2020-09-04 17:59:50,179 WARN L193 SmtUtils]: Spent 473.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-09-04 17:59:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:59:59,560 INFO L93 Difference]: Finished difference Result 14043 states and 18694 transitions. [2020-09-04 17:59:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-09-04 17:59:59,561 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 310 [2020-09-04 17:59:59,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:59:59,603 INFO L225 Difference]: With dead ends: 14043 [2020-09-04 17:59:59,603 INFO L226 Difference]: Without dead ends: 8795 [2020-09-04 17:59:59,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=919, Invalid=2863, Unknown=0, NotChecked=0, Total=3782 [2020-09-04 17:59:59,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8795 states. [2020-09-04 18:00:00,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8795 to 6474. [2020-09-04 18:00:00,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6474 states. [2020-09-04 18:00:00,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6474 states to 6474 states and 7995 transitions. [2020-09-04 18:00:00,622 INFO L78 Accepts]: Start accepts. Automaton has 6474 states and 7995 transitions. Word has length 310 [2020-09-04 18:00:00,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:00,624 INFO L479 AbstractCegarLoop]: Abstraction has 6474 states and 7995 transitions. [2020-09-04 18:00:00,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 18:00:00,624 INFO L276 IsEmpty]: Start isEmpty. Operand 6474 states and 7995 transitions. [2020-09-04 18:00:00,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2020-09-04 18:00:00,633 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:00,634 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:00:00,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 18:00:00,634 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:00,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:00,634 INFO L82 PathProgramCache]: Analyzing trace with hash 1101833629, now seen corresponding path program 1 times [2020-09-04 18:00:00,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:00,635 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571398820] [2020-09-04 18:00:00,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:00,641 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:00,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 18:00:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:00:00,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 18:00:00,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 18:00:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 18:00:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 18:00:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 18:00:00,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-09-04 18:00:00,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 18:00:00,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-09-04 18:00:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-09-04 18:00:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2020-09-04 18:00:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:00,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:00,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:00:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:00,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:00,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-09-04 18:00:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:01,031 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 18:00:01,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571398820] [2020-09-04 18:00:01,033 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:01,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 18:00:01,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83551821] [2020-09-04 18:00:01,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 18:00:01,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:01,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 18:00:01,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-04 18:00:01,035 INFO L87 Difference]: Start difference. First operand 6474 states and 7995 transitions. Second operand 9 states. [2020-09-04 18:00:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:07,940 INFO L93 Difference]: Finished difference Result 21783 states and 28598 transitions. [2020-09-04 18:00:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-04 18:00:07,941 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 314 [2020-09-04 18:00:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:08,009 INFO L225 Difference]: With dead ends: 21783 [2020-09-04 18:00:08,009 INFO L226 Difference]: Without dead ends: 15358 [2020-09-04 18:00:08,040 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=227, Invalid=529, Unknown=0, NotChecked=0, Total=756 [2020-09-04 18:00:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15358 states. [2020-09-04 18:00:10,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15358 to 12334. [2020-09-04 18:00:10,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12334 states. [2020-09-04 18:00:10,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12334 states to 12334 states and 15601 transitions. [2020-09-04 18:00:10,194 INFO L78 Accepts]: Start accepts. Automaton has 12334 states and 15601 transitions. Word has length 314 [2020-09-04 18:00:10,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:10,195 INFO L479 AbstractCegarLoop]: Abstraction has 12334 states and 15601 transitions. [2020-09-04 18:00:10,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 18:00:10,195 INFO L276 IsEmpty]: Start isEmpty. Operand 12334 states and 15601 transitions. [2020-09-04 18:00:10,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-09-04 18:00:10,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:10,217 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:00:10,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 18:00:10,217 INFO L427 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:10,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:10,218 INFO L82 PathProgramCache]: Analyzing trace with hash -1795037537, now seen corresponding path program 1 times [2020-09-04 18:00:10,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:10,218 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327528761] [2020-09-04 18:00:10,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:10,223 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:10,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 18:00:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:00:10,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 18:00:10,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 18:00:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 18:00:10,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:10,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 18:00:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 18:00:10,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 18:00:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-09-04 18:00:10,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-09-04 18:00:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-09-04 18:00:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-04 18:00:10,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2020-09-04 18:00:10,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:10,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2020-09-04 18:00:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-09-04 18:00:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 18:00:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 18:00:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-09-04 18:00:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-09-04 18:00:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 18:00:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:10,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:10,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:10,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 350 [2020-09-04 18:00:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:10,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:00:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:10,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 407 [2020-09-04 18:00:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:10,778 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-04 18:00:10,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327528761] [2020-09-04 18:00:10,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:10,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-09-04 18:00:10,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758672659] [2020-09-04 18:00:10,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-04 18:00:10,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:10,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-04 18:00:10,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-04 18:00:10,782 INFO L87 Difference]: Start difference. First operand 12334 states and 15601 transitions. Second operand 13 states. [2020-09-04 18:00:16,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:16,316 INFO L93 Difference]: Finished difference Result 21444 states and 27135 transitions. [2020-09-04 18:00:16,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 18:00:16,317 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 434 [2020-09-04 18:00:16,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:16,363 INFO L225 Difference]: With dead ends: 21444 [2020-09-04 18:00:16,364 INFO L226 Difference]: Without dead ends: 9166 [2020-09-04 18:00:16,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=285, Invalid=837, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 18:00:16,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9166 states. [2020-09-04 18:00:17,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9166 to 7147. [2020-09-04 18:00:17,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7147 states. [2020-09-04 18:00:17,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 8558 transitions. [2020-09-04 18:00:17,692 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 8558 transitions. Word has length 434 [2020-09-04 18:00:17,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:17,692 INFO L479 AbstractCegarLoop]: Abstraction has 7147 states and 8558 transitions. [2020-09-04 18:00:17,693 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-04 18:00:17,693 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 8558 transitions. [2020-09-04 18:00:17,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-09-04 18:00:17,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:17,701 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:00:17,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 18:00:17,701 INFO L427 AbstractCegarLoop]: === Iteration 13 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:17,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:17,701 INFO L82 PathProgramCache]: Analyzing trace with hash 489071275, now seen corresponding path program 1 times [2020-09-04 18:00:17,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:17,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197806862] [2020-09-04 18:00:17,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:17,706 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 18:00:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:00:17,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 18:00:17,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 18:00:17,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 18:00:17,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:17,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:17,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 18:00:17,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 18:00:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 18:00:17,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 18:00:17,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-04 18:00:17,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 18:00:17,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:17,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:17,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:18,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:18,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:18,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-09-04 18:00:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:18,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:18,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:18,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:00:18,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:18,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-09-04 18:00:18,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:18,183 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 18:00:18,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197806862] [2020-09-04 18:00:18,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:18,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 18:00:18,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251552975] [2020-09-04 18:00:18,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 18:00:18,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:18,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 18:00:18,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-09-04 18:00:18,186 INFO L87 Difference]: Start difference. First operand 7147 states and 8558 transitions. Second operand 12 states. [2020-09-04 18:00:23,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:23,160 INFO L93 Difference]: Finished difference Result 14462 states and 17893 transitions. [2020-09-04 18:00:23,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 18:00:23,160 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 320 [2020-09-04 18:00:23,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:23,191 INFO L225 Difference]: With dead ends: 14462 [2020-09-04 18:00:23,191 INFO L226 Difference]: Without dead ends: 9059 [2020-09-04 18:00:23,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=242, Invalid=628, Unknown=0, NotChecked=0, Total=870 [2020-09-04 18:00:23,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9059 states. [2020-09-04 18:00:24,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9059 to 7356. [2020-09-04 18:00:24,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7356 states. [2020-09-04 18:00:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7356 states to 7356 states and 8637 transitions. [2020-09-04 18:00:24,437 INFO L78 Accepts]: Start accepts. Automaton has 7356 states and 8637 transitions. Word has length 320 [2020-09-04 18:00:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:24,438 INFO L479 AbstractCegarLoop]: Abstraction has 7356 states and 8637 transitions. [2020-09-04 18:00:24,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 18:00:24,438 INFO L276 IsEmpty]: Start isEmpty. Operand 7356 states and 8637 transitions. [2020-09-04 18:00:24,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-09-04 18:00:24,446 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:24,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:00:24,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 18:00:24,447 INFO L427 AbstractCegarLoop]: === Iteration 14 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:24,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:24,447 INFO L82 PathProgramCache]: Analyzing trace with hash 1643690248, now seen corresponding path program 1 times [2020-09-04 18:00:24,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:24,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20995089] [2020-09-04 18:00:24,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:24,451 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:24,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:24,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 18:00:24,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:00:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 18:00:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 18:00:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 18:00:24,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:24,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 18:00:24,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 18:00:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-09-04 18:00:24,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 18:00:24,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-09-04 18:00:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 18:00:24,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:24,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-09-04 18:00:24,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:24,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:24,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:24,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:00:24,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-09-04 18:00:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:24,867 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 18:00:24,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20995089] [2020-09-04 18:00:24,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:24,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 18:00:24,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886005967] [2020-09-04 18:00:24,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 18:00:24,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:24,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 18:00:24,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-04 18:00:24,870 INFO L87 Difference]: Start difference. First operand 7356 states and 8637 transitions. Second operand 10 states. [2020-09-04 18:00:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:29,890 INFO L93 Difference]: Finished difference Result 17304 states and 21196 transitions. [2020-09-04 18:00:29,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 18:00:29,890 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 320 [2020-09-04 18:00:29,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:29,929 INFO L225 Difference]: With dead ends: 17304 [2020-09-04 18:00:29,929 INFO L226 Difference]: Without dead ends: 10244 [2020-09-04 18:00:29,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=225, Invalid=705, Unknown=0, NotChecked=0, Total=930 [2020-09-04 18:00:29,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10244 states. [2020-09-04 18:00:31,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10244 to 8429. [2020-09-04 18:00:31,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8429 states. [2020-09-04 18:00:31,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8429 states to 8429 states and 9776 transitions. [2020-09-04 18:00:31,466 INFO L78 Accepts]: Start accepts. Automaton has 8429 states and 9776 transitions. Word has length 320 [2020-09-04 18:00:31,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:31,467 INFO L479 AbstractCegarLoop]: Abstraction has 8429 states and 9776 transitions. [2020-09-04 18:00:31,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 18:00:31,467 INFO L276 IsEmpty]: Start isEmpty. Operand 8429 states and 9776 transitions. [2020-09-04 18:00:31,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-09-04 18:00:31,481 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:31,481 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:00:31,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-04 18:00:31,481 INFO L427 AbstractCegarLoop]: === Iteration 15 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:31,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:31,482 INFO L82 PathProgramCache]: Analyzing trace with hash 347748049, now seen corresponding path program 1 times [2020-09-04 18:00:31,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:31,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1155086420] [2020-09-04 18:00:31,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:31,485 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:31,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 18:00:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:00:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 18:00:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 18:00:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 18:00:31,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:31,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:31,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 18:00:31,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 18:00:31,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 18:00:31,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 18:00:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 18:00:31,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:31,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:31,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:31,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:31,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 18:00:31,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-04 18:00:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2020-09-04 18:00:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-09-04 18:00:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-09-04 18:00:31,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:00:31,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 18:00:31,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2020-09-04 18:00:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-09-04 18:00:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-09-04 18:00:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 18:00:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-09-04 18:00:31,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:31,973 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 18:00:31,974 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1155086420] [2020-09-04 18:00:31,974 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:31,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 18:00:31,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501886217] [2020-09-04 18:00:31,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 18:00:31,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:31,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 18:00:31,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-09-04 18:00:31,976 INFO L87 Difference]: Start difference. First operand 8429 states and 9776 transitions. Second operand 12 states. [2020-09-04 18:00:35,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:35,917 INFO L93 Difference]: Finished difference Result 12976 states and 15067 transitions. [2020-09-04 18:00:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 18:00:35,918 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 345 [2020-09-04 18:00:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:35,936 INFO L225 Difference]: With dead ends: 12976 [2020-09-04 18:00:35,937 INFO L226 Difference]: Without dead ends: 3861 [2020-09-04 18:00:35,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=217, Invalid=539, Unknown=0, NotChecked=0, Total=756 [2020-09-04 18:00:35,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2020-09-04 18:00:37,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3226. [2020-09-04 18:00:37,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3226 states. [2020-09-04 18:00:37,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 3637 transitions. [2020-09-04 18:00:37,165 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 3637 transitions. Word has length 345 [2020-09-04 18:00:37,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:37,166 INFO L479 AbstractCegarLoop]: Abstraction has 3226 states and 3637 transitions. [2020-09-04 18:00:37,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 18:00:37,166 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 3637 transitions. [2020-09-04 18:00:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-09-04 18:00:37,172 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:37,172 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:00:37,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-04 18:00:37,173 INFO L427 AbstractCegarLoop]: === Iteration 16 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:37,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:37,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1543503057, now seen corresponding path program 1 times [2020-09-04 18:00:37,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:37,174 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601986802] [2020-09-04 18:00:37,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:37,178 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 18:00:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:00:37,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 18:00:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 18:00:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 18:00:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:37,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 18:00:37,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-04 18:00:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 18:00:37,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-09-04 18:00:37,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 18:00:37,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:37,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:37,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-09-04 18:00:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-09-04 18:00:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 18:00:37,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-09-04 18:00:37,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2020-09-04 18:00:37,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-09-04 18:00:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:37,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 18:00:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 18:00:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2020-09-04 18:00:37,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2020-09-04 18:00:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-09-04 18:00:37,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-04 18:00:37,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-09-04 18:00:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2020-09-04 18:00:37,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:37,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 18:00:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:37,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-09-04 18:00:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:00:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 18:00:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 475 [2020-09-04 18:00:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:37,844 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-04 18:00:37,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601986802] [2020-09-04 18:00:37,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:37,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 18:00:37,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107074598] [2020-09-04 18:00:37,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 18:00:37,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:37,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 18:00:37,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-04 18:00:37,846 INFO L87 Difference]: Start difference. First operand 3226 states and 3637 transitions. Second operand 14 states. [2020-09-04 18:00:41,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:41,743 INFO L93 Difference]: Finished difference Result 6713 states and 7928 transitions. [2020-09-04 18:00:41,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 18:00:41,744 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 502 [2020-09-04 18:00:41,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:41,760 INFO L225 Difference]: With dead ends: 6713 [2020-09-04 18:00:41,761 INFO L226 Difference]: Without dead ends: 3541 [2020-09-04 18:00:41,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=277, Invalid=845, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 18:00:41,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3541 states. [2020-09-04 18:00:42,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3541 to 3039. [2020-09-04 18:00:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3039 states. [2020-09-04 18:00:42,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3039 states to 3039 states and 3425 transitions. [2020-09-04 18:00:42,291 INFO L78 Accepts]: Start accepts. Automaton has 3039 states and 3425 transitions. Word has length 502 [2020-09-04 18:00:42,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:42,292 INFO L479 AbstractCegarLoop]: Abstraction has 3039 states and 3425 transitions. [2020-09-04 18:00:42,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 18:00:42,292 INFO L276 IsEmpty]: Start isEmpty. Operand 3039 states and 3425 transitions. [2020-09-04 18:00:42,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2020-09-04 18:00:42,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:42,296 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:00:42,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-04 18:00:42,297 INFO L427 AbstractCegarLoop]: === Iteration 17 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:42,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:42,297 INFO L82 PathProgramCache]: Analyzing trace with hash 581444211, now seen corresponding path program 1 times [2020-09-04 18:00:42,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:42,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850205904] [2020-09-04 18:00:42,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:42,302 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:42,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 18:00:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:00:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 18:00:42,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 18:00:42,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 18:00:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:42,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 18:00:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 18:00:42,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 18:00:42,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 18:00:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 18:00:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-04 18:00:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 18:00:42,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:42,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:42,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-09-04 18:00:42,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:42,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:42,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 18:00:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-09-04 18:00:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:42,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:42,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:00:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 18:00:42,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:42,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-09-04 18:00:42,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:43,015 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 18:00:43,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850205904] [2020-09-04 18:00:43,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:43,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 18:00:43,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798150858] [2020-09-04 18:00:43,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 18:00:43,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:43,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 18:00:43,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-04 18:00:43,017 INFO L87 Difference]: Start difference. First operand 3039 states and 3425 transitions. Second operand 14 states. [2020-09-04 18:00:54,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:54,362 INFO L93 Difference]: Finished difference Result 10848 states and 12572 transitions. [2020-09-04 18:00:54,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-09-04 18:00:54,362 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 388 [2020-09-04 18:00:54,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:00:54,387 INFO L225 Difference]: With dead ends: 10848 [2020-09-04 18:00:54,388 INFO L226 Difference]: Without dead ends: 8889 [2020-09-04 18:00:54,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 86 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 838 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=538, Invalid=2542, Unknown=0, NotChecked=0, Total=3080 [2020-09-04 18:00:54,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8889 states. [2020-09-04 18:00:55,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8889 to 7530. [2020-09-04 18:00:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7530 states. [2020-09-04 18:00:55,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7530 states to 7530 states and 8626 transitions. [2020-09-04 18:00:55,725 INFO L78 Accepts]: Start accepts. Automaton has 7530 states and 8626 transitions. Word has length 388 [2020-09-04 18:00:55,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:00:55,726 INFO L479 AbstractCegarLoop]: Abstraction has 7530 states and 8626 transitions. [2020-09-04 18:00:55,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 18:00:55,726 INFO L276 IsEmpty]: Start isEmpty. Operand 7530 states and 8626 transitions. [2020-09-04 18:00:55,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-09-04 18:00:55,731 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:00:55,732 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:00:55,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-04 18:00:55,732 INFO L427 AbstractCegarLoop]: === Iteration 18 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:00:55,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:00:55,732 INFO L82 PathProgramCache]: Analyzing trace with hash -961418405, now seen corresponding path program 1 times [2020-09-04 18:00:55,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:00:55,733 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2001984208] [2020-09-04 18:00:55,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:00:55,735 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:00:55,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 18:00:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:00:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 18:00:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 18:00:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 18:00:55,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:55,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:00:55,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 18:00:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 18:00:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 18:00:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 18:00:55,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:55,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 18:00:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-04 18:00:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 18:00:56,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:56,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:00:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-09-04 18:00:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 18:00:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:00:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-09-04 18:00:56,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:00:56,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:00:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:00:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:00:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 18:00:56,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-09-04 18:00:56,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:00:56,231 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 18:00:56,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2001984208] [2020-09-04 18:00:56,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:00:56,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 18:00:56,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835503096] [2020-09-04 18:00:56,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 18:00:56,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:00:56,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 18:00:56,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-04 18:00:56,233 INFO L87 Difference]: Start difference. First operand 7530 states and 8626 transitions. Second operand 10 states. [2020-09-04 18:00:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:00:59,977 INFO L93 Difference]: Finished difference Result 12901 states and 14962 transitions. [2020-09-04 18:00:59,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 18:00:59,978 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 392 [2020-09-04 18:00:59,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:01:00,014 INFO L225 Difference]: With dead ends: 12901 [2020-09-04 18:01:00,014 INFO L226 Difference]: Without dead ends: 8682 [2020-09-04 18:01:00,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-09-04 18:01:00,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8682 states. [2020-09-04 18:01:01,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8682 to 7569. [2020-09-04 18:01:01,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7569 states. [2020-09-04 18:01:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7569 states to 7569 states and 8674 transitions. [2020-09-04 18:01:01,512 INFO L78 Accepts]: Start accepts. Automaton has 7569 states and 8674 transitions. Word has length 392 [2020-09-04 18:01:01,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:01:01,513 INFO L479 AbstractCegarLoop]: Abstraction has 7569 states and 8674 transitions. [2020-09-04 18:01:01,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 18:01:01,513 INFO L276 IsEmpty]: Start isEmpty. Operand 7569 states and 8674 transitions. [2020-09-04 18:01:01,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-09-04 18:01:01,518 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:01:01,519 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:01:01,519 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-04 18:01:01,519 INFO L427 AbstractCegarLoop]: === Iteration 19 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:01:01,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:01:01,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1547268291, now seen corresponding path program 1 times [2020-09-04 18:01:01,520 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:01:01,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725597491] [2020-09-04 18:01:01,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:01:01,523 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:01:01,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:01:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-04 18:01:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-04 18:01:01,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-04 18:01:01,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-04 18:01:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-09-04 18:01:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:01:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:01:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-09-04 18:01:01,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-09-04 18:01:01,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-09-04 18:01:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-09-04 18:01:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-09-04 18:01:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-09-04 18:01:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-09-04 18:01:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-04 18:01:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:01:01,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:01:01,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 18:01:01,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:01:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2020-09-04 18:01:01,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:01:01,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:01:01,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:01:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-09-04 18:01:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-04 18:01:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-09-04 18:01:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-04 18:01:01,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 18:01:01,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-04 18:01:01,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-09-04 18:01:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-04 18:01:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:01,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 361 [2020-09-04 18:01:01,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 18:01:02,035 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 18:01:02,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725597491] [2020-09-04 18:01:02,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 18:01:02,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 18:01:02,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88529573] [2020-09-04 18:01:02,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 18:01:02,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 18:01:02,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 18:01:02,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-04 18:01:02,038 INFO L87 Difference]: Start difference. First operand 7569 states and 8674 transitions. Second operand 10 states. [2020-09-04 18:01:06,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 18:01:06,088 INFO L93 Difference]: Finished difference Result 12982 states and 15070 transitions. [2020-09-04 18:01:06,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-04 18:01:06,089 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 393 [2020-09-04 18:01:06,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 18:01:06,110 INFO L225 Difference]: With dead ends: 12982 [2020-09-04 18:01:06,111 INFO L226 Difference]: Without dead ends: 8724 [2020-09-04 18:01:06,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=161, Invalid=391, Unknown=0, NotChecked=0, Total=552 [2020-09-04 18:01:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8724 states. [2020-09-04 18:01:07,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8724 to 7575. [2020-09-04 18:01:07,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7575 states. [2020-09-04 18:01:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7575 states to 7575 states and 8680 transitions. [2020-09-04 18:01:07,484 INFO L78 Accepts]: Start accepts. Automaton has 7575 states and 8680 transitions. Word has length 393 [2020-09-04 18:01:07,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 18:01:07,485 INFO L479 AbstractCegarLoop]: Abstraction has 7575 states and 8680 transitions. [2020-09-04 18:01:07,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 18:01:07,485 INFO L276 IsEmpty]: Start isEmpty. Operand 7575 states and 8680 transitions. [2020-09-04 18:01:07,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-09-04 18:01:07,489 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 18:01:07,490 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 18:01:07,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-09-04 18:01:07,490 INFO L427 AbstractCegarLoop]: === Iteration 20 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 18:01:07,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 18:01:07,490 INFO L82 PathProgramCache]: Analyzing trace with hash 1490009989, now seen corresponding path program 1 times [2020-09-04 18:01:07,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 18:01:07,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624585885] [2020-09-04 18:01:07,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 18:01:07,492 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 18:01:07,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 18:01:07,548 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 18:01:07,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 18:01:07,611 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 18:01:07,852 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 18:01:07,853 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 18:01:07,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-09-04 18:01:07,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 06:01:07 BoogieIcfgContainer [2020-09-04 18:01:07,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 18:01:07,944 INFO L168 Benchmark]: Toolchain (without parser) took 131398.45 ms. Allocated memory was 139.5 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 103.1 MB in the beginning and 1.1 GB in the end (delta: -982.9 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2020-09-04 18:01:07,949 INFO L168 Benchmark]: CDTParser took 0.86 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 18:01:07,950 INFO L168 Benchmark]: CACSL2BoogieTranslator took 540.55 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 178.8 MB in the end (delta: -75.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-09-04 18:01:07,953 INFO L168 Benchmark]: Boogie Preprocessor took 62.57 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 176.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-04 18:01:07,953 INFO L168 Benchmark]: RCFGBuilder took 770.49 ms. Allocated memory is still 202.9 MB. Free memory was 176.2 MB in the beginning and 129.8 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. [2020-09-04 18:01:07,954 INFO L168 Benchmark]: TraceAbstraction took 130016.51 ms. Allocated memory was 202.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 129.2 MB in the beginning and 1.1 GB in the end (delta: -956.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2020-09-04 18:01:07,962 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.86 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 540.55 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 102.9 MB in the beginning and 178.8 MB in the end (delta: -75.9 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 62.57 ms. Allocated memory is still 202.9 MB. Free memory was 178.8 MB in the beginning and 176.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 770.49 ms. Allocated memory is still 202.9 MB. Free memory was 176.2 MB in the beginning and 129.8 MB in the end (delta: 46.3 MB). Peak memory consumption was 46.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 130016.51 ms. Allocated memory was 202.9 MB in the beginning and 2.9 GB in the end (delta: 2.7 GB). Free memory was 129.2 MB in the beginning and 1.1 GB in the end (delta: -956.8 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int m_pc = 0; [L15] int t1_pc = 0; [L16] int t2_pc = 0; [L17] int m_st ; [L18] int t1_st ; [L19] int t2_st ; [L20] int m_i ; [L21] int t1_i ; [L22] int t2_i ; [L23] int M_E = 2; [L24] int T1_E = 2; [L25] int T2_E = 2; [L26] int E_M = 2; [L27] int E_1 = 2; [L28] int E_2 = 2; [L33] int token ; [L35] int local ; [L600] int __retres1 ; [L604] CALL init_model() [L514] m_i = 1 [L515] t1_i = 1 [L516] t2_i = 1 [L604] RET init_model() [L605] CALL start_simulation() [L541] int kernel_st ; [L542] int tmp ; [L543] int tmp___0 ; [L547] kernel_st = 0 [L548] FCALL update_channels() [L549] CALL init_threads() [L233] COND TRUE m_i == 1 [L234] m_st = 0 [L238] COND TRUE t1_i == 1 [L239] t1_st = 0 [L243] COND TRUE t2_i == 1 [L244] t2_st = 0 [L549] RET init_threads() [L550] CALL fire_delta_events() [L346] COND FALSE !(M_E == 0) [L351] COND FALSE !(T1_E == 0) [L356] COND FALSE !(T2_E == 0) [L361] COND FALSE !(E_M == 0) [L366] COND FALSE !(E_1 == 0) [L371] COND FALSE !(E_2 == 0) [L550] RET fire_delta_events() [L551] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND FALSE !(m_pc == 1) [L178] __retres1 = 0 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND FALSE !(\read(tmp)) [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND FALSE !(t1_pc == 1) [L197] __retres1 = 0 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND FALSE !(\read(tmp___0)) [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND FALSE !(t2_pc == 1) [L216] __retres1 = 0 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND FALSE !(\read(tmp___1)) [L551] RET activate_threads() [L552] CALL reset_delta_events() [L384] COND FALSE !(M_E == 1) [L389] COND FALSE !(T1_E == 1) [L394] COND FALSE !(T2_E == 1) [L399] COND FALSE !(E_M == 1) [L404] COND FALSE !(E_1 == 1) [L409] COND FALSE !(E_2 == 1) [L552] RET reset_delta_events() [L555] COND TRUE 1 [L558] kernel_st = 1 [L559] CALL eval() [L279] int tmp ; [L283] COND TRUE 1 [L286] CALL, EXPR exists_runnable_thread() [L253] int __retres1 ; [L256] COND TRUE m_st == 0 [L257] __retres1 = 1 [L274] return (__retres1); [L286] RET, EXPR exists_runnable_thread() [L286] tmp = exists_runnable_thread() [L288] COND TRUE \read(tmp) [L293] COND TRUE m_st == 0 [L294] int tmp_ndt_1; [L295] tmp_ndt_1 = __VERIFIER_nondet_int() [L296] COND FALSE !(\read(tmp_ndt_1)) [L307] COND TRUE t1_st == 0 [L308] int tmp_ndt_2; [L309] tmp_ndt_2 = __VERIFIER_nondet_int() [L310] COND TRUE \read(tmp_ndt_2) [L312] t1_st = 1 [L313] CALL transmit1() [L96] COND TRUE t1_pc == 0 [L107] COND TRUE 1 [L109] t1_pc = 1 [L110] t1_st = 2 [L313] RET transmit1() [L321] COND TRUE t2_st == 0 [L322] int tmp_ndt_3; [L323] tmp_ndt_3 = __VERIFIER_nondet_int() [L324] COND TRUE \read(tmp_ndt_3) [L326] t2_st = 1 [L327] CALL transmit2() [L132] COND TRUE t2_pc == 0 [L143] COND TRUE 1 [L145] t2_pc = 1 [L146] t2_st = 2 [L327] RET transmit2() [L283] COND TRUE 1 [L286] CALL, EXPR exists_runnable_thread() [L253] int __retres1 ; [L256] COND TRUE m_st == 0 [L257] __retres1 = 1 [L274] return (__retres1); [L286] RET, EXPR exists_runnable_thread() [L286] tmp = exists_runnable_thread() [L288] COND TRUE \read(tmp) [L293] COND TRUE m_st == 0 [L294] int tmp_ndt_1; [L295] tmp_ndt_1 = __VERIFIER_nondet_int() [L296] COND TRUE \read(tmp_ndt_1) [L298] m_st = 1 [L299] CALL master() [L38] int tmp_var = __VERIFIER_nondet_int(); [L40] COND TRUE m_pc == 0 [L51] COND TRUE 1 [L54] token = __VERIFIER_nondet_int() [L55] local = token [L56] E_1 = 1 [L57] CALL immediate_notify() [L457] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND FALSE !(m_pc == 1) [L178] __retres1 = 0 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND FALSE !(\read(tmp)) [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND TRUE t1_pc == 1 [L188] COND TRUE E_1 == 1 [L189] __retres1 = 1 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND TRUE \read(tmp___0) [L436] t1_st = 0 [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND TRUE t2_pc == 1 [L207] COND FALSE !(E_2 == 1) [L216] __retres1 = 0 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND FALSE !(\read(tmp___1)) [L457] RET activate_threads() [L57] RET immediate_notify() [L58] E_1 = 2 [L59] m_pc = 1 [L60] m_st = 2 [L299] RET master() [L307] COND TRUE t1_st == 0 [L308] int tmp_ndt_2; [L309] tmp_ndt_2 = __VERIFIER_nondet_int() [L310] COND TRUE \read(tmp_ndt_2) [L312] t1_st = 1 [L313] CALL transmit1() [L96] COND FALSE !(t1_pc == 0) [L99] COND TRUE t1_pc == 1 [L115] token += 1 [L116] E_2 = 1 [L117] CALL immediate_notify() [L457] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND TRUE m_pc == 1 [L169] COND FALSE !(E_M == 1) [L178] __retres1 = 0 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND FALSE !(\read(tmp)) [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND TRUE t1_pc == 1 [L188] COND FALSE !(E_1 == 1) [L197] __retres1 = 0 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND FALSE !(\read(tmp___0)) [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND TRUE t2_pc == 1 [L207] COND TRUE E_2 == 1 [L208] __retres1 = 1 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND TRUE \read(tmp___1) [L444] t2_st = 0 [L457] RET activate_threads() [L117] RET immediate_notify() [L118] E_2 = 2 [L107] COND TRUE 1 [L109] t1_pc = 1 [L110] t1_st = 2 [L313] RET transmit1() [L321] COND TRUE t2_st == 0 [L322] int tmp_ndt_3; [L323] tmp_ndt_3 = __VERIFIER_nondet_int() [L324] COND TRUE \read(tmp_ndt_3) [L326] t2_st = 1 [L327] CALL transmit2() [L132] COND FALSE !(t2_pc == 0) [L135] COND TRUE t2_pc == 1 [L151] token += 1 [L152] E_M = 1 [L153] CALL immediate_notify() [L457] CALL activate_threads() [L419] int tmp ; [L420] int tmp___0 ; [L421] int tmp___1 ; [L425] CALL, EXPR is_master_triggered() [L165] int __retres1 ; [L168] COND TRUE m_pc == 1 [L169] COND TRUE E_M == 1 [L170] __retres1 = 1 [L180] return (__retres1); [L425] RET, EXPR is_master_triggered() [L425] tmp = is_master_triggered() [L427] COND TRUE \read(tmp) [L428] m_st = 0 [L433] CALL, EXPR is_transmit1_triggered() [L184] int __retres1 ; [L187] COND TRUE t1_pc == 1 [L188] COND FALSE !(E_1 == 1) [L197] __retres1 = 0 [L199] return (__retres1); [L433] RET, EXPR is_transmit1_triggered() [L433] tmp___0 = is_transmit1_triggered() [L435] COND FALSE !(\read(tmp___0)) [L441] CALL, EXPR is_transmit2_triggered() [L203] int __retres1 ; [L206] COND TRUE t2_pc == 1 [L207] COND FALSE !(E_2 == 1) [L216] __retres1 = 0 [L218] return (__retres1); [L441] RET, EXPR is_transmit2_triggered() [L441] tmp___1 = is_transmit2_triggered() [L443] COND FALSE !(\read(tmp___1)) [L457] RET activate_threads() [L153] RET immediate_notify() [L154] E_M = 2 [L143] COND TRUE 1 [L145] t2_pc = 1 [L146] t2_st = 2 [L327] RET transmit2() [L283] COND TRUE 1 [L286] CALL, EXPR exists_runnable_thread() [L253] int __retres1 ; [L256] COND TRUE m_st == 0 [L257] __retres1 = 1 [L274] return (__retres1); [L286] RET, EXPR exists_runnable_thread() [L286] tmp = exists_runnable_thread() [L288] COND TRUE \read(tmp) [L293] COND TRUE m_st == 0 [L294] int tmp_ndt_1; [L295] tmp_ndt_1 = __VERIFIER_nondet_int() [L296] COND TRUE \read(tmp_ndt_1) [L298] m_st = 1 [L299] CALL master() [L38] int tmp_var = __VERIFIER_nondet_int(); [L40] COND FALSE !(m_pc == 0) [L43] COND TRUE m_pc == 1 [L65] COND FALSE !(token != local + 2) [L70] COND TRUE tmp_var <= 5 [L71] COND TRUE tmp_var >= 5 [L76] COND TRUE tmp_var <= 5 [L77] COND TRUE tmp_var >= 5 [L78] COND TRUE tmp_var == 5 [L79] CALL error() [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 23 procedures, 284 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 129.8s, OverallIterations: 20, TraceHistogramMax: 6, AutomataDifference: 101.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6476 SDtfs, 33863 SDslu, 2333 SDs, 0 SdLazy, 36471 SolverSat, 8974 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1849 GetRequests, 1273 SyntacticMatches, 1 SemanticMatches, 575 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4838 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12334occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 17.5s AutomataMinimizationTime, 19 MinimizatonAttempts, 25145 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...