/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:50:54,304 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:50:54,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:50:54,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:50:54,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:50:54,333 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:50:54,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:50:54,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:50:54,339 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:50:54,340 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:50:54,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:50:54,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:50:54,342 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:50:54,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:50:54,345 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:50:54,346 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:50:54,347 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:50:54,348 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:50:54,350 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:50:54,352 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:50:54,354 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:50:54,355 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:50:54,357 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:50:54,358 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:50:54,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 19:50:54,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:50:54,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:50:54,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:50:54,381 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:50:54,400 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:50:54,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:50:54,403 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:50:54,403 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:50:54,403 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:50:54,403 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:50:54,404 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:50:54,404 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:50:54,404 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:50:54,404 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:50:54,406 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:50:54,406 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:50:54,406 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:50:54,406 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:50:54,407 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:50:54,407 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:50:54,407 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:50:54,407 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:50:54,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:50:54,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:50:54,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:50:54,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:50:54,409 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:50:54,753 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:50:54,764 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:50:54,770 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:50:54,772 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:50:54,772 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:50:54,773 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-08-22 19:50:54,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f8c8147/a1d0474021c14b31aeebc39d22ea769c/FLAGc53aa7a18 [2020-08-22 19:50:55,393 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:50:55,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-08-22 19:50:55,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f8c8147/a1d0474021c14b31aeebc39d22ea769c/FLAGc53aa7a18 [2020-08-22 19:50:55,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4f8c8147/a1d0474021c14b31aeebc39d22ea769c [2020-08-22 19:50:55,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:50:55,737 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:50:55,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:50:55,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:50:55,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:50:55,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:50:55" (1/1) ... [2020-08-22 19:50:55,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59eb4cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:55, skipping insertion in model container [2020-08-22 19:50:55,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:50:55" (1/1) ... [2020-08-22 19:50:55,754 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:50:55,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:50:56,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:50:56,083 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:50:56,126 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:50:56,242 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:50:56,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:56 WrapperNode [2020-08-22 19:50:56,243 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:50:56,244 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:50:56,244 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:50:56,245 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:50:56,261 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:56" (1/1) ... [2020-08-22 19:50:56,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:56" (1/1) ... [2020-08-22 19:50:56,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:56" (1/1) ... [2020-08-22 19:50:56,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:56" (1/1) ... [2020-08-22 19:50:56,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:56" (1/1) ... [2020-08-22 19:50:56,289 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:56" (1/1) ... [2020-08-22 19:50:56,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:56" (1/1) ... [2020-08-22 19:50:56,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:50:56,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:50:56,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:50:56,296 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:50:56,297 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:50:56,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:50:56,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:50:56,367 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-08-22 19:50:56,367 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-08-22 19:50:56,368 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-08-22 19:50:56,368 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-08-22 19:50:56,368 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-08-22 19:50:56,368 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-08-22 19:50:56,369 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-08-22 19:50:56,369 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-08-22 19:50:56,369 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-08-22 19:50:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-08-22 19:50:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-08-22 19:50:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-08-22 19:50:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-08-22 19:50:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-08-22 19:50:56,370 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-08-22 19:50:56,371 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-08-22 19:50:56,371 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-08-22 19:50:56,371 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-08-22 19:50:56,372 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:50:56,372 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:50:56,374 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-08-22 19:50:56,374 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-08-22 19:50:56,374 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-08-22 19:50:56,374 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-08-22 19:50:56,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:50:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-08-22 19:50:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-08-22 19:50:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-08-22 19:50:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-08-22 19:50:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-08-22 19:50:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-08-22 19:50:56,375 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-08-22 19:50:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-08-22 19:50:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-08-22 19:50:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-08-22 19:50:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-08-22 19:50:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-08-22 19:50:56,376 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-08-22 19:50:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-08-22 19:50:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:50:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:50:56,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:50:56,955 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:50:56,956 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 19:50:56,962 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:50:56 BoogieIcfgContainer [2020-08-22 19:50:56,963 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:50:56,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:50:56,965 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:50:56,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:50:56,969 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:50:55" (1/3) ... [2020-08-22 19:50:56,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379225a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:50:56, skipping insertion in model container [2020-08-22 19:50:56,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:50:56" (2/3) ... [2020-08-22 19:50:56,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@379225a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:50:56, skipping insertion in model container [2020-08-22 19:50:56,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:50:56" (3/3) ... [2020-08-22 19:50:56,973 INFO L109 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2020-08-22 19:50:56,987 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:50:56,997 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:50:57,015 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:50:57,041 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:50:57,042 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:50:57,042 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:50:57,042 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:50:57,043 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:50:57,043 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:50:57,043 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:50:57,044 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:50:57,068 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states. [2020-08-22 19:50:57,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-08-22 19:50:57,089 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:50:57,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:50:57,091 INFO L427 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:50:57,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:50:57,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1293744950, now seen corresponding path program 1 times [2020-08-22 19:50:57,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:50:57,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2109026514] [2020-08-22 19:50:57,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:50:57,189 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:50:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:57,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:50:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:57,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 19:50:57,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:57,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:50:57,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:57,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 19:50:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:57,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 19:50:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:57,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 19:50:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:57,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:50:57,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:57,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:50:57,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:57,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 19:50:57,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:57,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 19:50:57,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:50:57,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:50:57,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2109026514] [2020-08-22 19:50:57,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:50:57,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:50:57,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425082020] [2020-08-22 19:50:57,740 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:50:57,740 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:50:57,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:50:57,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:50:57,760 INFO L87 Difference]: Start difference. First operand 227 states. Second operand 7 states. [2020-08-22 19:51:00,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:00,020 INFO L93 Difference]: Finished difference Result 795 states and 1083 transitions. [2020-08-22 19:51:00,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-22 19:51:00,022 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 110 [2020-08-22 19:51:00,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:00,046 INFO L225 Difference]: With dead ends: 795 [2020-08-22 19:51:00,046 INFO L226 Difference]: Without dead ends: 585 [2020-08-22 19:51:00,054 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-08-22 19:51:00,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2020-08-22 19:51:00,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 431. [2020-08-22 19:51:00,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-08-22 19:51:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 538 transitions. [2020-08-22 19:51:00,233 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 538 transitions. Word has length 110 [2020-08-22 19:51:00,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:00,234 INFO L479 AbstractCegarLoop]: Abstraction has 431 states and 538 transitions. [2020-08-22 19:51:00,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:51:00,235 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 538 transitions. [2020-08-22 19:51:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-08-22 19:51:00,242 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:00,243 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:00,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:51:00,243 INFO L427 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:00,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1206698500, now seen corresponding path program 1 times [2020-08-22 19:51:00,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:00,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1112687019] [2020-08-22 19:51:00,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:00,251 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 19:51:00,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 19:51:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 19:51:00,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 19:51:00,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 19:51:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 19:51:00,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 19:51:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:00,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-08-22 19:51:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:00,644 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-08-22 19:51:00,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1112687019] [2020-08-22 19:51:00,645 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:00,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:51:00,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490117081] [2020-08-22 19:51:00,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:51:00,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:00,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:51:00,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:51:00,648 INFO L87 Difference]: Start difference. First operand 431 states and 538 transitions. Second operand 9 states. [2020-08-22 19:51:03,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:03,901 INFO L93 Difference]: Finished difference Result 1528 states and 2039 transitions. [2020-08-22 19:51:03,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 19:51:03,903 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 176 [2020-08-22 19:51:03,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:03,923 INFO L225 Difference]: With dead ends: 1528 [2020-08-22 19:51:03,923 INFO L226 Difference]: Without dead ends: 1137 [2020-08-22 19:51:03,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2020-08-22 19:51:03,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2020-08-22 19:51:04,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 847. [2020-08-22 19:51:04,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 847 states. [2020-08-22 19:51:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 847 states to 847 states and 1093 transitions. [2020-08-22 19:51:04,090 INFO L78 Accepts]: Start accepts. Automaton has 847 states and 1093 transitions. Word has length 176 [2020-08-22 19:51:04,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:04,092 INFO L479 AbstractCegarLoop]: Abstraction has 847 states and 1093 transitions. [2020-08-22 19:51:04,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:51:04,092 INFO L276 IsEmpty]: Start isEmpty. Operand 847 states and 1093 transitions. [2020-08-22 19:51:04,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-08-22 19:51:04,101 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:04,102 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:04,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:51:04,102 INFO L427 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:04,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:04,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1912018981, now seen corresponding path program 1 times [2020-08-22 19:51:04,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:04,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484444579] [2020-08-22 19:51:04,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:04,109 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 19:51:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:04,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 19:51:04,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 19:51:04,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 19:51:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 19:51:04,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 19:51:04,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 19:51:04,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:04,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:04,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-08-22 19:51:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-08-22 19:51:04,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:04,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:04,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:51:04,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-08-22 19:51:04,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-08-22 19:51:04,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484444579] [2020-08-22 19:51:04,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:04,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 19:51:04,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014190240] [2020-08-22 19:51:04,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 19:51:04,499 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:04,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 19:51:04,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:51:04,500 INFO L87 Difference]: Start difference. First operand 847 states and 1093 transitions. Second operand 12 states. [2020-08-22 19:51:06,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:06,764 INFO L93 Difference]: Finished difference Result 2018 states and 2712 transitions. [2020-08-22 19:51:06,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-08-22 19:51:06,765 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 226 [2020-08-22 19:51:06,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:06,773 INFO L225 Difference]: With dead ends: 2018 [2020-08-22 19:51:06,774 INFO L226 Difference]: Without dead ends: 953 [2020-08-22 19:51:06,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=202, Invalid=500, Unknown=0, NotChecked=0, Total=702 [2020-08-22 19:51:06,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-08-22 19:51:06,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 691. [2020-08-22 19:51:06,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-08-22 19:51:06,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 858 transitions. [2020-08-22 19:51:06,879 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 858 transitions. Word has length 226 [2020-08-22 19:51:06,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:06,880 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 858 transitions. [2020-08-22 19:51:06,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 19:51:06,881 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 858 transitions. [2020-08-22 19:51:06,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-08-22 19:51:06,886 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:06,886 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:06,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:51:06,887 INFO L427 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:06,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:06,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1527598382, now seen corresponding path program 2 times [2020-08-22 19:51:06,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:06,888 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046776081] [2020-08-22 19:51:06,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:06,895 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:06,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 19:51:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:07,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 19:51:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 19:51:07,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 19:51:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 19:51:07,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 19:51:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 19:51:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:07,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:07,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:07,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 19:51:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:07,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:51:07,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2020-08-22 19:51:07,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:07,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:07,332 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046776081] [2020-08-22 19:51:07,332 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:07,333 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:51:07,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194899890] [2020-08-22 19:51:07,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:51:07,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:07,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:51:07,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:51:07,336 INFO L87 Difference]: Start difference. First operand 691 states and 858 transitions. Second operand 10 states. [2020-08-22 19:51:10,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:10,231 INFO L93 Difference]: Finished difference Result 2333 states and 3090 transitions. [2020-08-22 19:51:10,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 19:51:10,235 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 225 [2020-08-22 19:51:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:10,251 INFO L225 Difference]: With dead ends: 2333 [2020-08-22 19:51:10,251 INFO L226 Difference]: Without dead ends: 1680 [2020-08-22 19:51:10,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=672, Unknown=0, NotChecked=0, Total=870 [2020-08-22 19:51:10,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1680 states. [2020-08-22 19:51:10,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1680 to 1279. [2020-08-22 19:51:10,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-22 19:51:10,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1565 transitions. [2020-08-22 19:51:10,447 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1565 transitions. Word has length 225 [2020-08-22 19:51:10,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:10,449 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1565 transitions. [2020-08-22 19:51:10,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:51:10,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1565 transitions. [2020-08-22 19:51:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-22 19:51:10,459 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:10,459 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:10,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:51:10,460 INFO L427 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:10,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:10,461 INFO L82 PathProgramCache]: Analyzing trace with hash -1201348035, now seen corresponding path program 1 times [2020-08-22 19:51:10,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:10,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478394282] [2020-08-22 19:51:10,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:10,468 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:10,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:10,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 19:51:10,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:10,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 19:51:10,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 19:51:10,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 19:51:10,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:10,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 19:51:10,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 19:51:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-08-22 19:51:10,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-08-22 19:51:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-08-22 19:51:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:10,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:10,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:10,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-22 19:51:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:10,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:51:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 19:51:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:10,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:10,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478394282] [2020-08-22 19:51:10,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:10,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:51:10,867 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758116916] [2020-08-22 19:51:10,868 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:51:10,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:10,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:51:10,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:51:10,869 INFO L87 Difference]: Start difference. First operand 1279 states and 1565 transitions. Second operand 9 states. [2020-08-22 19:51:13,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:13,443 INFO L93 Difference]: Finished difference Result 2930 states and 3716 transitions. [2020-08-22 19:51:13,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-08-22 19:51:13,445 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 254 [2020-08-22 19:51:13,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:13,463 INFO L225 Difference]: With dead ends: 2930 [2020-08-22 19:51:13,464 INFO L226 Difference]: Without dead ends: 1690 [2020-08-22 19:51:13,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2020-08-22 19:51:13,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2020-08-22 19:51:13,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1279. [2020-08-22 19:51:13,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-08-22 19:51:13,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1553 transitions. [2020-08-22 19:51:13,734 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1553 transitions. Word has length 254 [2020-08-22 19:51:13,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:13,735 INFO L479 AbstractCegarLoop]: Abstraction has 1279 states and 1553 transitions. [2020-08-22 19:51:13,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:51:13,735 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1553 transitions. [2020-08-22 19:51:13,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-08-22 19:51:13,747 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:13,748 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:13,748 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:51:13,748 INFO L427 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:13,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:13,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1453934466, now seen corresponding path program 1 times [2020-08-22 19:51:13,749 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:13,749 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431993714] [2020-08-22 19:51:13,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:13,756 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:13,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 19:51:13,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:13,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 19:51:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 19:51:13,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 19:51:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:13,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 19:51:13,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 19:51:13,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-08-22 19:51:13,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:13,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:13,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-08-22 19:51:13,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-08-22 19:51:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-08-22 19:51:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:13,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:14,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:14,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:14,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:51:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:14,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-08-22 19:51:14,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:14,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:14,104 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431993714] [2020-08-22 19:51:14,105 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:14,105 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-22 19:51:14,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342660723] [2020-08-22 19:51:14,106 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-22 19:51:14,106 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:14,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-22 19:51:14,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-08-22 19:51:14,107 INFO L87 Difference]: Start difference. First operand 1279 states and 1553 transitions. Second operand 10 states. [2020-08-22 19:51:17,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:17,394 INFO L93 Difference]: Finished difference Result 4387 states and 5560 transitions. [2020-08-22 19:51:17,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-08-22 19:51:17,395 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 254 [2020-08-22 19:51:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:17,420 INFO L225 Difference]: With dead ends: 4387 [2020-08-22 19:51:17,420 INFO L226 Difference]: Without dead ends: 3147 [2020-08-22 19:51:17,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=816, Unknown=0, NotChecked=0, Total=1056 [2020-08-22 19:51:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3147 states. [2020-08-22 19:51:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3147 to 2409. [2020-08-22 19:51:17,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2409 states. [2020-08-22 19:51:17,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2409 states to 2409 states and 2950 transitions. [2020-08-22 19:51:17,852 INFO L78 Accepts]: Start accepts. Automaton has 2409 states and 2950 transitions. Word has length 254 [2020-08-22 19:51:17,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:17,853 INFO L479 AbstractCegarLoop]: Abstraction has 2409 states and 2950 transitions. [2020-08-22 19:51:17,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-22 19:51:17,853 INFO L276 IsEmpty]: Start isEmpty. Operand 2409 states and 2950 transitions. [2020-08-22 19:51:17,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-08-22 19:51:17,863 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:17,863 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:17,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 19:51:17,866 INFO L427 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:17,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:17,867 INFO L82 PathProgramCache]: Analyzing trace with hash 564718689, now seen corresponding path program 1 times [2020-08-22 19:51:17,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:17,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28706971] [2020-08-22 19:51:17,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:17,875 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:17,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 19:51:18,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:18,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 19:51:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 19:51:18,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 19:51:18,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:18,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:18,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 19:51:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 19:51:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:18,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 19:51:18,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 19:51:18,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:18,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:18,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:18,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 19:51:18,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:51:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 19:51:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:18,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:18,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28706971] [2020-08-22 19:51:18,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:18,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-08-22 19:51:18,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641153259] [2020-08-22 19:51:18,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 19:51:18,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:18,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 19:51:18,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-08-22 19:51:18,352 INFO L87 Difference]: Start difference. First operand 2409 states and 2950 transitions. Second operand 14 states. [2020-08-22 19:51:22,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:22,459 INFO L93 Difference]: Finished difference Result 5356 states and 6878 transitions. [2020-08-22 19:51:22,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-08-22 19:51:22,460 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 260 [2020-08-22 19:51:22,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:22,481 INFO L225 Difference]: With dead ends: 5356 [2020-08-22 19:51:22,481 INFO L226 Difference]: Without dead ends: 2987 [2020-08-22 19:51:22,494 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 499 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=442, Invalid=1628, Unknown=0, NotChecked=0, Total=2070 [2020-08-22 19:51:22,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2987 states. [2020-08-22 19:51:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2987 to 2415. [2020-08-22 19:51:22,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2415 states. [2020-08-22 19:51:22,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2415 states to 2415 states and 2906 transitions. [2020-08-22 19:51:22,897 INFO L78 Accepts]: Start accepts. Automaton has 2415 states and 2906 transitions. Word has length 260 [2020-08-22 19:51:22,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:22,898 INFO L479 AbstractCegarLoop]: Abstraction has 2415 states and 2906 transitions. [2020-08-22 19:51:22,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 19:51:22,898 INFO L276 IsEmpty]: Start isEmpty. Operand 2415 states and 2906 transitions. [2020-08-22 19:51:22,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-08-22 19:51:22,911 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:22,911 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:22,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 19:51:22,912 INFO L427 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:22,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:22,912 INFO L82 PathProgramCache]: Analyzing trace with hash -622546722, now seen corresponding path program 1 times [2020-08-22 19:51:22,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:22,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674579750] [2020-08-22 19:51:22,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:22,922 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:22,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 19:51:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:23,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 19:51:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 19:51:23,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 19:51:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:23,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 19:51:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 19:51:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:23,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 19:51:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 19:51:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:23,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:23,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 19:51:23,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:23,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:51:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 19:51:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:23,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:23,376 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674579750] [2020-08-22 19:51:23,376 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:23,377 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-08-22 19:51:23,377 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360043471] [2020-08-22 19:51:23,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-22 19:51:23,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:23,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-22 19:51:23,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:51:23,379 INFO L87 Difference]: Start difference. First operand 2415 states and 2906 transitions. Second operand 12 states. [2020-08-22 19:51:29,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:29,063 INFO L93 Difference]: Finished difference Result 7890 states and 9700 transitions. [2020-08-22 19:51:29,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-08-22 19:51:29,064 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 260 [2020-08-22 19:51:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:29,101 INFO L225 Difference]: With dead ends: 7890 [2020-08-22 19:51:29,102 INFO L226 Difference]: Without dead ends: 5519 [2020-08-22 19:51:29,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=332, Invalid=1308, Unknown=0, NotChecked=0, Total=1640 [2020-08-22 19:51:29,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5519 states. [2020-08-22 19:51:29,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5519 to 4386. [2020-08-22 19:51:29,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4386 states. [2020-08-22 19:51:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4386 states to 4386 states and 5308 transitions. [2020-08-22 19:51:29,771 INFO L78 Accepts]: Start accepts. Automaton has 4386 states and 5308 transitions. Word has length 260 [2020-08-22 19:51:29,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:29,773 INFO L479 AbstractCegarLoop]: Abstraction has 4386 states and 5308 transitions. [2020-08-22 19:51:29,773 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-22 19:51:29,773 INFO L276 IsEmpty]: Start isEmpty. Operand 4386 states and 5308 transitions. [2020-08-22 19:51:29,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-08-22 19:51:29,783 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:29,783 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:29,783 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 19:51:29,784 INFO L427 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:29,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:29,784 INFO L82 PathProgramCache]: Analyzing trace with hash 1607368582, now seen corresponding path program 1 times [2020-08-22 19:51:29,784 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:29,785 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559558586] [2020-08-22 19:51:29,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:29,790 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:29,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 19:51:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:29,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 19:51:29,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 19:51:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 19:51:29,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:29,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 19:51:29,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 19:51:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:29,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 19:51:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 19:51:29,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:29,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 19:51:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:29,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:30,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:30,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:30,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:51:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:30,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 19:51:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:30,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559558586] [2020-08-22 19:51:30,278 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:30,278 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:51:30,284 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725629059] [2020-08-22 19:51:30,285 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:51:30,285 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:30,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:51:30,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:51:30,287 INFO L87 Difference]: Start difference. First operand 4386 states and 5308 transitions. Second operand 9 states. [2020-08-22 19:51:33,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:33,405 INFO L93 Difference]: Finished difference Result 8470 states and 10434 transitions. [2020-08-22 19:51:33,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 19:51:33,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 264 [2020-08-22 19:51:33,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:33,450 INFO L225 Difference]: With dead ends: 8470 [2020-08-22 19:51:33,451 INFO L226 Difference]: Without dead ends: 5371 [2020-08-22 19:51:33,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-08-22 19:51:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2020-08-22 19:51:34,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 4412. [2020-08-22 19:51:34,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4412 states. [2020-08-22 19:51:34,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4412 states to 4412 states and 5346 transitions. [2020-08-22 19:51:34,650 INFO L78 Accepts]: Start accepts. Automaton has 4412 states and 5346 transitions. Word has length 264 [2020-08-22 19:51:34,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:34,651 INFO L479 AbstractCegarLoop]: Abstraction has 4412 states and 5346 transitions. [2020-08-22 19:51:34,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:51:34,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4412 states and 5346 transitions. [2020-08-22 19:51:34,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-08-22 19:51:34,668 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:34,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:34,669 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 19:51:34,669 INFO L427 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:34,670 INFO L82 PathProgramCache]: Analyzing trace with hash -424779163, now seen corresponding path program 1 times [2020-08-22 19:51:34,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:34,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [196068476] [2020-08-22 19:51:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:34,683 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:34,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-22 19:51:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-22 19:51:34,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-08-22 19:51:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-08-22 19:51:34,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-08-22 19:51:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:34,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-08-22 19:51:34,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-08-22 19:51:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-08-22 19:51:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-08-22 19:51:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-08-22 19:51:34,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-08-22 19:51:34,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:34,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:34,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-22 19:51:34,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2020-08-22 19:51:34,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-08-22 19:51:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:51:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-08-22 19:51:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-22 19:51:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:34,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2020-08-22 19:51:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:51:35,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:51:35,236 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [196068476] [2020-08-22 19:51:35,236 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:51:35,236 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:51:35,236 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114398327] [2020-08-22 19:51:35,237 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:51:35,237 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:51:35,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:51:35,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:51:35,238 INFO L87 Difference]: Start difference. First operand 4412 states and 5346 transitions. Second operand 9 states. [2020-08-22 19:51:37,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:51:37,281 INFO L93 Difference]: Finished difference Result 8530 states and 10535 transitions. [2020-08-22 19:51:37,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 19:51:37,281 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 265 [2020-08-22 19:51:37,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:51:37,438 INFO L225 Difference]: With dead ends: 8530 [2020-08-22 19:51:37,439 INFO L226 Difference]: Without dead ends: 5405 [2020-08-22 19:51:37,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=126, Invalid=294, Unknown=0, NotChecked=0, Total=420 [2020-08-22 19:51:37,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5405 states. [2020-08-22 19:51:38,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5405 to 4416. [2020-08-22 19:51:38,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4416 states. [2020-08-22 19:51:38,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4416 states to 4416 states and 5350 transitions. [2020-08-22 19:51:38,054 INFO L78 Accepts]: Start accepts. Automaton has 4416 states and 5350 transitions. Word has length 265 [2020-08-22 19:51:38,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:51:38,056 INFO L479 AbstractCegarLoop]: Abstraction has 4416 states and 5350 transitions. [2020-08-22 19:51:38,056 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:51:38,056 INFO L276 IsEmpty]: Start isEmpty. Operand 4416 states and 5350 transitions. [2020-08-22 19:51:38,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-08-22 19:51:38,066 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:51:38,067 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:51:38,067 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 19:51:38,067 INFO L427 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:51:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:51:38,068 INFO L82 PathProgramCache]: Analyzing trace with hash -482037465, now seen corresponding path program 1 times [2020-08-22 19:51:38,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:51:38,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816603604] [2020-08-22 19:51:38,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:51:38,074 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:51:38,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:51:38,097 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:51:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:51:38,122 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:51:38,238 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:51:38,238 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:51:38,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 19:51:38,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:51:38 BoogieIcfgContainer [2020-08-22 19:51:38,279 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:51:38,282 INFO L168 Benchmark]: Toolchain (without parser) took 42544.45 ms. Allocated memory was 136.8 MB in the beginning and 992.5 MB in the end (delta: 855.6 MB). Free memory was 100.8 MB in the beginning and 380.7 MB in the end (delta: -280.0 MB). Peak memory consumption was 575.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:51:38,283 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 19:51:38,284 INFO L168 Benchmark]: CACSL2BoogieTranslator took 505.47 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 179.0 MB in the end (delta: -78.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:51:38,285 INFO L168 Benchmark]: Boogie Preprocessor took 51.52 ms. Allocated memory is still 200.8 MB. Free memory was 179.0 MB in the beginning and 176.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:51:38,286 INFO L168 Benchmark]: RCFGBuilder took 666.80 ms. Allocated memory is still 200.8 MB. Free memory was 176.8 MB in the beginning and 138.7 MB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:51:38,286 INFO L168 Benchmark]: TraceAbstraction took 41315.07 ms. Allocated memory was 200.8 MB in the beginning and 992.5 MB in the end (delta: 791.7 MB). Free memory was 138.0 MB in the beginning and 380.7 MB in the end (delta: -242.7 MB). Peak memory consumption was 549.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:51:38,290 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 136.8 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 505.47 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 100.6 MB in the beginning and 179.0 MB in the end (delta: -78.5 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 51.52 ms. Allocated memory is still 200.8 MB. Free memory was 179.0 MB in the beginning and 176.8 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 666.80 ms. Allocated memory is still 200.8 MB. Free memory was 176.8 MB in the beginning and 138.7 MB in the end (delta: 38.0 MB). Peak memory consumption was 38.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 41315.07 ms. Allocated memory was 200.8 MB in the beginning and 992.5 MB in the end (delta: 791.7 MB). Free memory was 138.0 MB in the beginning and 380.7 MB in the end (delta: -242.7 MB). Peak memory consumption was 549.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int m_pc = 0; [L15] int t1_pc = 0; [L16] int m_st ; [L17] int t1_st ; [L18] int m_i ; [L19] int t1_i ; [L20] int M_E = 2; [L21] int T1_E = 2; [L22] int E_M = 2; [L23] int E_1 = 2; [L27] int token ; [L29] int local ; [L475] int __retres1 ; [L479] CALL init_model() [L390] m_i = 1 [L391] t1_i = 1 [L479] RET init_model() [L480] CALL start_simulation() [L416] int kernel_st ; [L417] int tmp ; [L418] int tmp___0 ; [L422] kernel_st = 0 [L423] FCALL update_channels() [L424] CALL init_threads() [L172] COND TRUE m_i == 1 [L173] m_st = 0 [L177] COND TRUE t1_i == 1 [L178] t1_st = 0 [L424] RET init_threads() [L425] CALL fire_delta_events() [L261] COND FALSE !(M_E == 0) [L266] COND FALSE !(T1_E == 0) [L271] COND FALSE !(E_M == 0) [L276] COND FALSE !(E_1 == 0) [L425] RET fire_delta_events() [L426] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND FALSE !(m_pc == 1) [L136] __retres1 = 0 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND FALSE !(\read(tmp)) [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND FALSE !(t1_pc == 1) [L155] __retres1 = 0 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND FALSE !(\read(tmp___0)) [L426] RET activate_threads() [L427] CALL reset_delta_events() [L289] COND FALSE !(M_E == 1) [L294] COND FALSE !(T1_E == 1) [L299] COND FALSE !(E_M == 1) [L304] COND FALSE !(E_1 == 1) [L427] RET reset_delta_events() [L430] COND TRUE 1 [L433] kernel_st = 1 [L434] CALL eval() [L208] int tmp ; [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND FALSE !(\read(tmp_ndt_1)) [L236] COND TRUE t1_st == 0 [L237] int tmp_ndt_2; [L238] tmp_ndt_2 = __VERIFIER_nondet_int() [L239] COND TRUE \read(tmp_ndt_2) [L241] t1_st = 1 [L242] CALL transmit1() [L90] COND TRUE t1_pc == 0 [L101] COND TRUE 1 [L103] t1_pc = 1 [L104] t1_st = 2 [L242] RET transmit1() [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND TRUE \read(tmp_ndt_1) [L227] m_st = 1 [L228] CALL master() [L32] int tmp_var = __VERIFIER_nondet_int(); [L34] COND TRUE m_pc == 0 [L45] COND TRUE 1 [L48] token = __VERIFIER_nondet_int() [L49] local = token [L50] E_1 = 1 [L51] CALL immediate_notify() [L343] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND FALSE !(m_pc == 1) [L136] __retres1 = 0 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND FALSE !(\read(tmp)) [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND TRUE t1_pc == 1 [L146] COND TRUE E_1 == 1 [L147] __retres1 = 1 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND TRUE \read(tmp___0) [L330] t1_st = 0 [L343] RET activate_threads() [L51] RET immediate_notify() [L52] E_1 = 2 [L53] m_pc = 1 [L54] m_st = 2 [L228] RET master() [L236] COND TRUE t1_st == 0 [L237] int tmp_ndt_2; [L238] tmp_ndt_2 = __VERIFIER_nondet_int() [L239] COND TRUE \read(tmp_ndt_2) [L241] t1_st = 1 [L242] CALL transmit1() [L90] COND FALSE !(t1_pc == 0) [L93] COND TRUE t1_pc == 1 [L109] token += 1 [L110] E_M = 1 [L111] CALL immediate_notify() [L343] CALL activate_threads() [L314] int tmp ; [L315] int tmp___0 ; [L319] CALL, EXPR is_master_triggered() [L123] int __retres1 ; [L126] COND TRUE m_pc == 1 [L127] COND TRUE E_M == 1 [L128] __retres1 = 1 [L138] return (__retres1); [L319] RET, EXPR is_master_triggered() [L319] tmp = is_master_triggered() [L321] COND TRUE \read(tmp) [L322] m_st = 0 [L327] CALL, EXPR is_transmit1_triggered() [L142] int __retres1 ; [L145] COND TRUE t1_pc == 1 [L146] COND FALSE !(E_1 == 1) [L155] __retres1 = 0 [L157] return (__retres1); [L327] RET, EXPR is_transmit1_triggered() [L327] tmp___0 = is_transmit1_triggered() [L329] COND FALSE !(\read(tmp___0)) [L343] RET activate_threads() [L111] RET immediate_notify() [L112] E_M = 2 [L101] COND TRUE 1 [L103] t1_pc = 1 [L104] t1_st = 2 [L242] RET transmit1() [L212] COND TRUE 1 [L215] CALL, EXPR exists_runnable_thread() [L187] int __retres1 ; [L190] COND TRUE m_st == 0 [L191] __retres1 = 1 [L203] return (__retres1); [L215] RET, EXPR exists_runnable_thread() [L215] tmp = exists_runnable_thread() [L217] COND TRUE \read(tmp) [L222] COND TRUE m_st == 0 [L223] int tmp_ndt_1; [L224] tmp_ndt_1 = __VERIFIER_nondet_int() [L225] COND TRUE \read(tmp_ndt_1) [L227] m_st = 1 [L228] CALL master() [L32] int tmp_var = __VERIFIER_nondet_int(); [L34] COND FALSE !(m_pc == 0) [L37] COND TRUE m_pc == 1 [L59] COND FALSE !(token != local + 1) [L64] COND TRUE tmp_var <= 5 [L65] COND TRUE tmp_var >= 5 [L70] COND TRUE tmp_var <= 5 [L71] COND TRUE tmp_var >= 5 [L72] COND TRUE tmp_var == 5 [L73] CALL error() [L10] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 21 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 41.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 32.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2986 SDtfs, 10886 SDslu, 1122 SDs, 0 SdLazy, 17375 SolverSat, 3656 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 17.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 772 GetRequests, 499 SyntacticMatches, 1 SemanticMatches, 272 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1960 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4416occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 4.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 5909 StatesRemovedByMinimization, 10 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...