/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:16:47,037 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:16:47,040 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:16:47,079 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:16:47,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:16:47,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:16:47,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:16:47,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:16:47,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:16:47,090 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:16:47,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:16:47,093 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:16:47,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:16:47,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:16:47,098 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:16:47,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:16:47,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:16:47,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:16:47,105 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:16:47,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:16:47,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:16:47,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:16:47,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:16:47,123 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:16:47,145 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 02:16:47,145 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 02:16:47,146 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 02:16:47,147 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 02:16:47,148 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 02:16:47,150 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 02:16:47,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 02:16:47,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 02:16:47,152 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 02:16:47,154 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 02:16:47,155 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 02:16:47,156 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 02:16:47,157 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 02:16:47,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 02:16:47,158 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:16:47,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:16:47,161 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:16:47,162 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:16:47,178 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:16:47,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:16:47,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:16:47,181 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:16:47,181 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:16:47,181 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:16:47,181 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:16:47,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:16:47,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:16:47,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:16:47,182 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:16:47,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:16:47,183 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:16:47,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:16:47,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:16:47,184 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:16:47,184 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:16:47,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:16:47,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:16:47,185 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:16:47,185 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:16:47,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:16:47,185 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:16:47,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:16:47,760 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:16:47,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:16:47,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:16:47,768 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:16:47,769 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-11-07 02:16:47,856 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d33e0bb77/186d47d982f8401e81f9987b7a7a6035/FLAG3d548ce07 [2020-11-07 02:16:48,819 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:16:48,821 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-11-07 02:16:48,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d33e0bb77/186d47d982f8401e81f9987b7a7a6035/FLAG3d548ce07 [2020-11-07 02:16:49,088 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d33e0bb77/186d47d982f8401e81f9987b7a7a6035 [2020-11-07 02:16:49,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:16:49,099 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:16:49,102 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:16:49,102 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:16:49,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:16:49,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:49" (1/1) ... [2020-11-07 02:16:49,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44e6a4eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:49, skipping insertion in model container [2020-11-07 02:16:49,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:16:49" (1/1) ... [2020-11-07 02:16:49,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:16:49,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:16:49,408 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:16:49,428 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:16:49,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:16:49,536 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:16:49,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:49 WrapperNode [2020-11-07 02:16:49,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:16:49,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:16:49,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:16:49,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:16:49,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:49" (1/1) ... [2020-11-07 02:16:49,552 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:49" (1/1) ... [2020-11-07 02:16:49,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:49" (1/1) ... [2020-11-07 02:16:49,562 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:49" (1/1) ... [2020-11-07 02:16:49,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:49" (1/1) ... [2020-11-07 02:16:49,584 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:49" (1/1) ... [2020-11-07 02:16:49,587 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:49" (1/1) ... [2020-11-07 02:16:49,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:16:49,601 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:16:49,601 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:16:49,601 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:16:49,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:16:49,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:16:49,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:16:49,713 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:16:49,714 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-11-07 02:16:49,714 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-11-07 02:16:49,714 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-11-07 02:16:49,714 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-11-07 02:16:49,714 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-11-07 02:16:49,715 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-11-07 02:16:49,715 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-11-07 02:16:49,715 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-11-07 02:16:49,715 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-11-07 02:16:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-11-07 02:16:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-11-07 02:16:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-11-07 02:16:49,716 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-11-07 02:16:49,717 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-11-07 02:16:49,717 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-11-07 02:16:49,718 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-11-07 02:16:49,718 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-11-07 02:16:49,720 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-11-07 02:16:49,721 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:16:49,724 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:16:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:16:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:16:49,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:16:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-11-07 02:16:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-11-07 02:16:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-11-07 02:16:49,726 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-11-07 02:16:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:16:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-11-07 02:16:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-11-07 02:16:49,727 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-11-07 02:16:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-11-07 02:16:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-11-07 02:16:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-11-07 02:16:49,728 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-11-07 02:16:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-11-07 02:16:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-11-07 02:16:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-11-07 02:16:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-11-07 02:16:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-11-07 02:16:49,729 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-11-07 02:16:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-11-07 02:16:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:16:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:16:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:16:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:16:49,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:16:49,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:16:49,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:16:50,879 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:16:50,880 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 02:16:50,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:50 BoogieIcfgContainer [2020-11-07 02:16:50,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:16:50,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:16:50,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:16:50,890 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:16:50,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:16:49" (1/3) ... [2020-11-07 02:16:50,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ccbefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:50, skipping insertion in model container [2020-11-07 02:16:50,892 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:16:49" (2/3) ... [2020-11-07 02:16:50,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44ccbefb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:16:50, skipping insertion in model container [2020-11-07 02:16:50,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:16:50" (3/3) ... [2020-11-07 02:16:50,895 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2020-11-07 02:16:50,914 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:16:50,919 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:16:50,933 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:16:50,965 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:16:50,965 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:16:50,965 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:16:50,965 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:16:50,965 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:16:50,966 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:16:50,966 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:16:50,966 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:16:50,994 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states. [2020-11-07 02:16:51,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-11-07 02:16:51,017 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:16:51,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:16:51,018 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:16:51,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:16:51,027 INFO L82 PathProgramCache]: Analyzing trace with hash -394934797, now seen corresponding path program 1 times [2020-11-07 02:16:51,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:16:51,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2031721790] [2020-11-07 02:16:51,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:16:51,143 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:16:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:51,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:16:51,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:51,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:16:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:51,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:16:51,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:51,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:16:51,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:51,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 02:16:51,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:51,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 02:16:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:51,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:16:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:51,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:16:51,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:51,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 02:16:51,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:51,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 02:16:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:16:51,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2031721790] [2020-11-07 02:16:51,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:16:51,960 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 02:16:51,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68474438] [2020-11-07 02:16:51,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 02:16:51,969 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:16:51,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 02:16:51,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:16:51,991 INFO L87 Difference]: Start difference. First operand 239 states. Second operand 7 states. [2020-11-07 02:16:55,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:16:55,107 INFO L93 Difference]: Finished difference Result 807 states and 1081 transitions. [2020-11-07 02:16:55,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 02:16:55,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-11-07 02:16:55,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:16:55,155 INFO L225 Difference]: With dead ends: 807 [2020-11-07 02:16:55,155 INFO L226 Difference]: Without dead ends: 593 [2020-11-07 02:16:55,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-11-07 02:16:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-11-07 02:16:55,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 412. [2020-11-07 02:16:55,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-11-07 02:16:55,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 501 transitions. [2020-11-07 02:16:55,391 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 501 transitions. Word has length 119 [2020-11-07 02:16:55,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:16:55,392 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 501 transitions. [2020-11-07 02:16:55,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 02:16:55,393 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 501 transitions. [2020-11-07 02:16:55,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-07 02:16:55,400 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:16:55,400 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:16:55,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:16:55,401 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:16:55,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:16:55,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1396639943, now seen corresponding path program 1 times [2020-11-07 02:16:55,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:16:55,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862887488] [2020-11-07 02:16:55,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:16:55,409 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:16:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:16:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:16:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:16:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:16:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,838 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 02:16:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 02:16:55,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:16:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:16:55,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 02:16:55,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 02:16:55,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 02:16:55,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:55,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:16:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:56,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:16:56,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:56,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:16:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:56,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:16:56,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:56,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-11-07 02:16:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:16:56,129 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-07 02:16:56,129 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862887488] [2020-11-07 02:16:56,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:16:56,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-07 02:16:56,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289632798] [2020-11-07 02:16:56,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-07 02:16:56,132 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:16:56,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-07 02:16:56,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:16:56,133 INFO L87 Difference]: Start difference. First operand 412 states and 501 transitions. Second operand 10 states. [2020-11-07 02:17:00,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:17:00,734 INFO L93 Difference]: Finished difference Result 1573 states and 2156 transitions. [2020-11-07 02:17:00,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-07 02:17:00,734 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-11-07 02:17:00,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:17:00,761 INFO L225 Difference]: With dead ends: 1573 [2020-11-07 02:17:00,761 INFO L226 Difference]: Without dead ends: 1209 [2020-11-07 02:17:00,769 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-11-07 02:17:00,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-11-07 02:17:01,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 786. [2020-11-07 02:17:01,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2020-11-07 02:17:01,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 994 transitions. [2020-11-07 02:17:01,075 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 994 transitions. Word has length 185 [2020-11-07 02:17:01,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:17:01,078 INFO L481 AbstractCegarLoop]: Abstraction has 786 states and 994 transitions. [2020-11-07 02:17:01,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-07 02:17:01,078 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 994 transitions. [2020-11-07 02:17:01,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-11-07 02:17:01,095 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:17:01,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:17:01,096 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:17:01,096 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:17:01,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:17:01,097 INFO L82 PathProgramCache]: Analyzing trace with hash 396419367, now seen corresponding path program 1 times [2020-11-07 02:17:01,098 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:17:01,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002684119] [2020-11-07 02:17:01,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:17:01,103 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:17:01,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:17:01,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:17:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:17:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 02:17:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 02:17:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:01,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:01,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 02:17:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 02:17:01,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 02:17:01,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:17:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:01,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-11-07 02:17:01,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:01,612 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-07 02:17:01,613 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002684119] [2020-11-07 02:17:01,613 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:17:01,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 02:17:01,614 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496650463] [2020-11-07 02:17:01,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 02:17:01,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:17:01,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 02:17:01,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:17:01,618 INFO L87 Difference]: Start difference. First operand 786 states and 994 transitions. Second operand 9 states. [2020-11-07 02:17:04,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:17:04,195 INFO L93 Difference]: Finished difference Result 1834 states and 2385 transitions. [2020-11-07 02:17:04,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 02:17:04,196 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 185 [2020-11-07 02:17:04,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:17:04,207 INFO L225 Difference]: With dead ends: 1834 [2020-11-07 02:17:04,207 INFO L226 Difference]: Without dead ends: 1094 [2020-11-07 02:17:04,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-11-07 02:17:04,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2020-11-07 02:17:04,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 780. [2020-11-07 02:17:04,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2020-11-07 02:17:04,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 983 transitions. [2020-11-07 02:17:04,408 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 983 transitions. Word has length 185 [2020-11-07 02:17:04,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:17:04,409 INFO L481 AbstractCegarLoop]: Abstraction has 780 states and 983 transitions. [2020-11-07 02:17:04,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 02:17:04,409 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 983 transitions. [2020-11-07 02:17:04,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-11-07 02:17:04,413 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:17:04,414 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:17:04,414 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:17:04,414 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:17:04,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:17:04,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1530509083, now seen corresponding path program 1 times [2020-11-07 02:17:04,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:17:04,416 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966136855] [2020-11-07 02:17:04,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:17:04,418 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:17:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:17:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:17:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:17:04,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 02:17:04,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 02:17:04,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:04,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 02:17:04,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 02:17:04,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 02:17:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:17:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:04,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:04,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-11-07 02:17:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:04,838 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-11-07 02:17:04,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966136855] [2020-11-07 02:17:04,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:17:04,840 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 02:17:04,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030320698] [2020-11-07 02:17:04,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 02:17:04,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:17:04,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 02:17:04,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-11-07 02:17:04,842 INFO L87 Difference]: Start difference. First operand 780 states and 983 transitions. Second operand 11 states. [2020-11-07 02:17:13,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:17:13,431 INFO L93 Difference]: Finished difference Result 4529 states and 6151 transitions. [2020-11-07 02:17:13,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-07 02:17:13,431 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 190 [2020-11-07 02:17:13,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:17:13,461 INFO L225 Difference]: With dead ends: 4529 [2020-11-07 02:17:13,461 INFO L226 Difference]: Without dead ends: 3794 [2020-11-07 02:17:13,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=566, Invalid=2296, Unknown=0, NotChecked=0, Total=2862 [2020-11-07 02:17:13,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2020-11-07 02:17:14,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3005. [2020-11-07 02:17:14,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3005 states. [2020-11-07 02:17:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3005 states to 3005 states and 3804 transitions. [2020-11-07 02:17:14,179 INFO L78 Accepts]: Start accepts. Automaton has 3005 states and 3804 transitions. Word has length 190 [2020-11-07 02:17:14,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:17:14,180 INFO L481 AbstractCegarLoop]: Abstraction has 3005 states and 3804 transitions. [2020-11-07 02:17:14,181 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 02:17:14,181 INFO L276 IsEmpty]: Start isEmpty. Operand 3005 states and 3804 transitions. [2020-11-07 02:17:14,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-11-07 02:17:14,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:17:14,190 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:17:14,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:17:14,191 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:17:14,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:17:14,192 INFO L82 PathProgramCache]: Analyzing trace with hash -642684017, now seen corresponding path program 1 times [2020-11-07 02:17:14,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:17:14,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1271966106] [2020-11-07 02:17:14,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:17:14,196 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:17:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:14,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:17:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:17:14,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:17:14,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 02:17:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 02:17:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 02:17:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 02:17:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 02:17:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:17:14,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:14,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:17:14,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-11-07 02:17:14,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:17:14,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:17:14,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-11-07 02:17:14,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:14,768 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-07 02:17:14,770 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1271966106] [2020-11-07 02:17:14,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:17:14,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:17:14,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010841046] [2020-11-07 02:17:14,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:17:14,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:17:14,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:17:14,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:17:14,776 INFO L87 Difference]: Start difference. First operand 3005 states and 3804 transitions. Second operand 12 states. [2020-11-07 02:17:18,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:17:18,641 INFO L93 Difference]: Finished difference Result 6539 states and 8545 transitions. [2020-11-07 02:17:18,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-07 02:17:18,643 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 234 [2020-11-07 02:17:18,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:17:18,671 INFO L225 Difference]: With dead ends: 6539 [2020-11-07 02:17:18,671 INFO L226 Difference]: Without dead ends: 3269 [2020-11-07 02:17:18,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=224, Invalid=532, Unknown=0, NotChecked=0, Total=756 [2020-11-07 02:17:18,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2020-11-07 02:17:19,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 2459. [2020-11-07 02:17:19,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2459 states. [2020-11-07 02:17:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2459 states to 2459 states and 3049 transitions. [2020-11-07 02:17:19,387 INFO L78 Accepts]: Start accepts. Automaton has 2459 states and 3049 transitions. Word has length 234 [2020-11-07 02:17:19,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:17:19,388 INFO L481 AbstractCegarLoop]: Abstraction has 2459 states and 3049 transitions. [2020-11-07 02:17:19,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:17:19,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2459 states and 3049 transitions. [2020-11-07 02:17:19,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-11-07 02:17:19,396 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:17:19,396 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:17:19,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:17:19,397 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:17:19,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:17:19,398 INFO L82 PathProgramCache]: Analyzing trace with hash 552809403, now seen corresponding path program 1 times [2020-11-07 02:17:19,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:17:19,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [185083426] [2020-11-07 02:17:19,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:17:19,402 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:17:19,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:19,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:17:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:17:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:17:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 02:17:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 02:17:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 02:17:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 02:17:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 02:17:19,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:17:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-11-07 02:17:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:17:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:19,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 02:17:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2020-11-07 02:17:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:19,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:17:19,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [185083426] [2020-11-07 02:17:19,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:17:19,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-11-07 02:17:19,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197171713] [2020-11-07 02:17:19,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-07 02:17:19,865 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:17:19,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-07 02:17:19,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-07 02:17:19,867 INFO L87 Difference]: Start difference. First operand 2459 states and 3049 transitions. Second operand 11 states. [2020-11-07 02:17:24,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:17:24,855 INFO L93 Difference]: Finished difference Result 7020 states and 9125 transitions. [2020-11-07 02:17:24,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-07 02:17:24,855 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 234 [2020-11-07 02:17:24,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:17:24,894 INFO L225 Difference]: With dead ends: 7020 [2020-11-07 02:17:24,895 INFO L226 Difference]: Without dead ends: 4606 [2020-11-07 02:17:24,915 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2020-11-07 02:17:24,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4606 states. [2020-11-07 02:17:25,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4606 to 3691. [2020-11-07 02:17:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3691 states. [2020-11-07 02:17:25,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3691 states to 3691 states and 4491 transitions. [2020-11-07 02:17:25,846 INFO L78 Accepts]: Start accepts. Automaton has 3691 states and 4491 transitions. Word has length 234 [2020-11-07 02:17:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:17:25,846 INFO L481 AbstractCegarLoop]: Abstraction has 3691 states and 4491 transitions. [2020-11-07 02:17:25,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-07 02:17:25,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3691 states and 4491 transitions. [2020-11-07 02:17:25,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-11-07 02:17:25,857 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:17:25,857 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:17:25,857 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:17:25,857 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:17:25,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:17:25,858 INFO L82 PathProgramCache]: Analyzing trace with hash 1198606357, now seen corresponding path program 1 times [2020-11-07 02:17:25,858 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:17:25,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1869020822] [2020-11-07 02:17:25,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:17:25,862 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:17:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:17:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:17:26,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:17:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 02:17:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 02:17:26,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:26,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 02:17:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 02:17:26,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-11-07 02:17:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:17:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:26,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:26,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-11-07 02:17:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-11-07 02:17:26,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-11-07 02:17:26,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:17:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:26,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 02:17:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-11-07 02:17:26,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:26,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:17:26,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1869020822] [2020-11-07 02:17:26,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:17:26,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:17:26,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138744288] [2020-11-07 02:17:26,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:17:26,344 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:17:26,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:17:26,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:17:26,346 INFO L87 Difference]: Start difference. First operand 3691 states and 4491 transitions. Second operand 12 states. [2020-11-07 02:17:35,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:17:35,236 INFO L93 Difference]: Finished difference Result 7128 states and 8796 transitions. [2020-11-07 02:17:35,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-11-07 02:17:35,237 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 263 [2020-11-07 02:17:35,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:17:35,275 INFO L225 Difference]: With dead ends: 7128 [2020-11-07 02:17:35,275 INFO L226 Difference]: Without dead ends: 4643 [2020-11-07 02:17:35,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=689, Invalid=3217, Unknown=0, NotChecked=0, Total=3906 [2020-11-07 02:17:35,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4643 states. [2020-11-07 02:17:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4643 to 3733. [2020-11-07 02:17:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3733 states. [2020-11-07 02:17:36,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 4439 transitions. [2020-11-07 02:17:36,239 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 4439 transitions. Word has length 263 [2020-11-07 02:17:36,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:17:36,240 INFO L481 AbstractCegarLoop]: Abstraction has 3733 states and 4439 transitions. [2020-11-07 02:17:36,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:17:36,240 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 4439 transitions. [2020-11-07 02:17:36,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-11-07 02:17:36,250 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:17:36,251 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:17:36,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-07 02:17:36,251 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:17:36,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:17:36,252 INFO L82 PathProgramCache]: Analyzing trace with hash 2145955759, now seen corresponding path program 1 times [2020-11-07 02:17:36,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:17:36,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1640430810] [2020-11-07 02:17:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:17:36,256 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:17:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:17:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:17:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:17:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 02:17:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 02:17:36,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 02:17:36,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 02:17:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:17:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-11-07 02:17:36,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-07 02:17:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:17:36,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:36,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-11-07 02:17:36,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:17:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:36,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 02:17:36,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 02:17:36,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:36,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:17:36,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1640430810] [2020-11-07 02:17:36,850 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:17:36,850 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-11-07 02:17:36,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549354497] [2020-11-07 02:17:36,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-07 02:17:36,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:17:36,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-07 02:17:36,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-11-07 02:17:36,853 INFO L87 Difference]: Start difference. First operand 3733 states and 4439 transitions. Second operand 17 states. [2020-11-07 02:17:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:17:49,484 INFO L93 Difference]: Finished difference Result 8552 states and 10746 transitions. [2020-11-07 02:17:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2020-11-07 02:17:49,484 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 269 [2020-11-07 02:17:49,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:17:49,525 INFO L225 Difference]: With dead ends: 8552 [2020-11-07 02:17:49,525 INFO L226 Difference]: Without dead ends: 4863 [2020-11-07 02:17:49,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3889 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1782, Invalid=8724, Unknown=0, NotChecked=0, Total=10506 [2020-11-07 02:17:49,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4863 states. [2020-11-07 02:17:50,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4863 to 3741. [2020-11-07 02:17:50,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3741 states. [2020-11-07 02:17:50,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3741 states to 3741 states and 4346 transitions. [2020-11-07 02:17:50,397 INFO L78 Accepts]: Start accepts. Automaton has 3741 states and 4346 transitions. Word has length 269 [2020-11-07 02:17:50,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:17:50,398 INFO L481 AbstractCegarLoop]: Abstraction has 3741 states and 4346 transitions. [2020-11-07 02:17:50,398 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-07 02:17:50,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3741 states and 4346 transitions. [2020-11-07 02:17:50,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-11-07 02:17:50,408 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:17:50,409 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:17:50,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-11-07 02:17:50,409 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:17:50,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:17:50,410 INFO L82 PathProgramCache]: Analyzing trace with hash -299533614, now seen corresponding path program 1 times [2020-11-07 02:17:50,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:17:50,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [355494115] [2020-11-07 02:17:50,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:17:50,417 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:17:50,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:50,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:17:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:17:50,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:17:50,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 02:17:50,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 02:17:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 02:17:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 02:17:50,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:17:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-11-07 02:17:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-07 02:17:50,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:17:50,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:17:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-11-07 02:17:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:17:50,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:17:50,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:17:50,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 02:17:50,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:50,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 02:17:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:17:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:17:51,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [355494115] [2020-11-07 02:17:51,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:17:51,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-11-07 02:17:51,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40051043] [2020-11-07 02:17:51,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-07 02:17:51,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:17:51,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-07 02:17:51,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-11-07 02:17:51,031 INFO L87 Difference]: Start difference. First operand 3741 states and 4346 transitions. Second operand 12 states. [2020-11-07 02:17:59,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:17:59,209 INFO L93 Difference]: Finished difference Result 10456 states and 12470 transitions. [2020-11-07 02:17:59,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-07 02:17:59,210 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 269 [2020-11-07 02:17:59,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:17:59,265 INFO L225 Difference]: With dead ends: 10456 [2020-11-07 02:17:59,266 INFO L226 Difference]: Without dead ends: 7675 [2020-11-07 02:17:59,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 59 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 420 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=353, Invalid=1369, Unknown=0, NotChecked=0, Total=1722 [2020-11-07 02:17:59,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7675 states. [2020-11-07 02:18:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7675 to 6302. [2020-11-07 02:18:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6302 states. [2020-11-07 02:18:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6302 states to 6302 states and 7427 transitions. [2020-11-07 02:18:00,670 INFO L78 Accepts]: Start accepts. Automaton has 6302 states and 7427 transitions. Word has length 269 [2020-11-07 02:18:00,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:18:00,672 INFO L481 AbstractCegarLoop]: Abstraction has 6302 states and 7427 transitions. [2020-11-07 02:18:00,672 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-07 02:18:00,672 INFO L276 IsEmpty]: Start isEmpty. Operand 6302 states and 7427 transitions. [2020-11-07 02:18:00,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-11-07 02:18:00,681 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:18:00,681 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:18:00,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-11-07 02:18:00,682 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:18:00,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:18:00,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1616846890, now seen corresponding path program 1 times [2020-11-07 02:18:00,683 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:18:00,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [292772581] [2020-11-07 02:18:00,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:18:00,687 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:18:00,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:18:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-11-07 02:18:00,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:18:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-11-07 02:18:00,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-11-07 02:18:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:18:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:18:00,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-11-07 02:18:00,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-11-07 02:18:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-11-07 02:18:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-11-07 02:18:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-11-07 02:18:00,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-11-07 02:18:00,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:00,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:18:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-07 02:18:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2020-11-07 02:18:00,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-11-07 02:18:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:00,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:18:00,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:01,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-07 02:18:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:01,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-11-07 02:18:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:01,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-11-07 02:18:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:18:01,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:18:01,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [292772581] [2020-11-07 02:18:01,175 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:18:01,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-11-07 02:18:01,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755721860] [2020-11-07 02:18:01,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-07 02:18:01,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:18:01,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-07 02:18:01,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:18:01,179 INFO L87 Difference]: Start difference. First operand 6302 states and 7427 transitions. Second operand 9 states. [2020-11-07 02:18:05,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:18:05,758 INFO L93 Difference]: Finished difference Result 11987 states and 14313 transitions. [2020-11-07 02:18:05,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 02:18:05,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 273 [2020-11-07 02:18:05,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:18:05,807 INFO L225 Difference]: With dead ends: 11987 [2020-11-07 02:18:05,807 INFO L226 Difference]: Without dead ends: 7491 [2020-11-07 02:18:05,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=319, Unknown=0, NotChecked=0, Total=462 [2020-11-07 02:18:05,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7491 states. [2020-11-07 02:18:07,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7491 to 6364. [2020-11-07 02:18:07,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6364 states. [2020-11-07 02:18:07,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6364 states to 6364 states and 7509 transitions. [2020-11-07 02:18:07,481 INFO L78 Accepts]: Start accepts. Automaton has 6364 states and 7509 transitions. Word has length 273 [2020-11-07 02:18:07,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:18:07,482 INFO L481 AbstractCegarLoop]: Abstraction has 6364 states and 7509 transitions. [2020-11-07 02:18:07,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-07 02:18:07,482 INFO L276 IsEmpty]: Start isEmpty. Operand 6364 states and 7509 transitions. [2020-11-07 02:18:07,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2020-11-07 02:18:07,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:18:07,491 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:18:07,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-11-07 02:18:07,492 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:18:07,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:18:07,492 INFO L82 PathProgramCache]: Analyzing trace with hash -1966525787, now seen corresponding path program 1 times [2020-11-07 02:18:07,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:18:07,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401659664] [2020-11-07 02:18:07,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:18:07,496 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:18:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:18:07,524 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:18:07,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 02:18:07,558 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 02:18:07,731 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 02:18:07,731 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 02:18:07,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-11-07 02:18:07,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:18:07 BoogieIcfgContainer [2020-11-07 02:18:07,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:18:07,781 INFO L168 Benchmark]: Toolchain (without parser) took 78685.07 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 127.6 MB in the beginning and 1.1 GB in the end (delta: -995.5 MB). Peak memory consumption was 166.0 MB. Max. memory is 8.0 GB. [2020-11-07 02:18:07,781 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:18:07,782 INFO L168 Benchmark]: CACSL2BoogieTranslator took 435.31 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 113.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:18:07,783 INFO L168 Benchmark]: Boogie Preprocessor took 60.08 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 111.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:18:07,783 INFO L168 Benchmark]: RCFGBuilder took 1282.47 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 72.0 MB in the end (delta: 39.5 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. [2020-11-07 02:18:07,785 INFO L168 Benchmark]: TraceAbstraction took 76891.45 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 71.8 MB in the beginning and 1.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 110.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:18:07,788 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 151.0 MB. Free memory is still 125.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 435.31 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 113.7 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.08 ms. Allocated memory is still 151.0 MB. Free memory was 113.7 MB in the beginning and 111.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1282.47 ms. Allocated memory is still 151.0 MB. Free memory was 111.6 MB in the beginning and 72.0 MB in the end (delta: 39.5 MB). Peak memory consumption was 39.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 76891.45 ms. Allocated memory was 151.0 MB in the beginning and 1.3 GB in the end (delta: 1.2 GB). Free memory was 71.8 MB in the beginning and 1.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 110.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] int m_pc = 0; [L17] int t1_pc = 0; [L18] int m_st ; [L19] int t1_st ; [L20] int m_i ; [L21] int t1_i ; [L22] int M_E = 2; [L23] int T1_E = 2; [L24] int E_M = 2; [L25] int E_1 = 2; [L29] int token ; [L31] int local ; [L477] int __retres1 ; [L481] CALL init_model() [L392] m_i = 1 [L393] t1_i = 1 [L481] RET init_model() [L482] CALL start_simulation() [L418] int kernel_st ; [L419] int tmp ; [L420] int tmp___0 ; [L424] kernel_st = 0 [L425] FCALL update_channels() [L426] CALL init_threads() [L174] COND TRUE m_i == 1 [L175] m_st = 0 [L179] COND TRUE t1_i == 1 [L180] t1_st = 0 [L426] RET init_threads() [L427] CALL fire_delta_events() [L263] COND FALSE !(M_E == 0) [L268] COND FALSE !(T1_E == 0) [L273] COND FALSE !(E_M == 0) [L278] COND FALSE !(E_1 == 0) [L427] RET fire_delta_events() [L428] CALL activate_threads() [L316] int tmp ; [L317] int tmp___0 ; [L321] CALL, EXPR is_master_triggered() [L125] int __retres1 ; [L128] COND FALSE !(m_pc == 1) [L138] __retres1 = 0 [L140] return (__retres1); [L321] RET, EXPR is_master_triggered() [L321] tmp = is_master_triggered() [L323] COND FALSE !(\read(tmp)) [L329] CALL, EXPR is_transmit1_triggered() [L144] int __retres1 ; [L147] COND FALSE !(t1_pc == 1) [L157] __retres1 = 0 [L159] return (__retres1); [L329] RET, EXPR is_transmit1_triggered() [L329] tmp___0 = is_transmit1_triggered() [L331] COND FALSE !(\read(tmp___0)) [L428] RET activate_threads() [L429] CALL reset_delta_events() [L291] COND FALSE !(M_E == 1) [L296] COND FALSE !(T1_E == 1) [L301] COND FALSE !(E_M == 1) [L306] COND FALSE !(E_1 == 1) [L429] RET reset_delta_events() [L432] COND TRUE 1 [L435] kernel_st = 1 [L436] CALL eval() [L210] int tmp ; [L214] COND TRUE 1 [L217] CALL, EXPR exists_runnable_thread() [L189] int __retres1 ; [L192] COND TRUE m_st == 0 [L193] __retres1 = 1 [L205] return (__retres1); [L217] RET, EXPR exists_runnable_thread() [L217] tmp = exists_runnable_thread() [L219] COND TRUE \read(tmp) [L224] COND TRUE m_st == 0 [L225] int tmp_ndt_1; [L226] tmp_ndt_1 = __VERIFIER_nondet_int() [L227] COND FALSE !(\read(tmp_ndt_1)) [L238] COND TRUE t1_st == 0 [L239] int tmp_ndt_2; [L240] tmp_ndt_2 = __VERIFIER_nondet_int() [L241] COND TRUE \read(tmp_ndt_2) [L243] t1_st = 1 [L244] CALL transmit1() [L92] COND TRUE t1_pc == 0 [L103] COND TRUE 1 [L105] t1_pc = 1 [L106] t1_st = 2 [L244] RET transmit1() [L214] COND TRUE 1 [L217] CALL, EXPR exists_runnable_thread() [L189] int __retres1 ; [L192] COND TRUE m_st == 0 [L193] __retres1 = 1 [L205] return (__retres1); [L217] RET, EXPR exists_runnable_thread() [L217] tmp = exists_runnable_thread() [L219] COND TRUE \read(tmp) [L224] COND TRUE m_st == 0 [L225] int tmp_ndt_1; [L226] tmp_ndt_1 = __VERIFIER_nondet_int() [L227] COND TRUE \read(tmp_ndt_1) [L229] m_st = 1 [L230] CALL master() [L34] int tmp_var = __VERIFIER_nondet_int(); [L36] COND TRUE m_pc == 0 [L47] COND TRUE 1 [L50] token = __VERIFIER_nondet_int() [L51] local = token [L52] E_1 = 1 [L53] CALL immediate_notify() [L345] CALL activate_threads() [L316] int tmp ; [L317] int tmp___0 ; [L321] CALL, EXPR is_master_triggered() [L125] int __retres1 ; [L128] COND FALSE !(m_pc == 1) [L138] __retres1 = 0 [L140] return (__retres1); [L321] RET, EXPR is_master_triggered() [L321] tmp = is_master_triggered() [L323] COND FALSE !(\read(tmp)) [L329] CALL, EXPR is_transmit1_triggered() [L144] int __retres1 ; [L147] COND TRUE t1_pc == 1 [L148] COND TRUE E_1 == 1 [L149] __retres1 = 1 [L159] return (__retres1); [L329] RET, EXPR is_transmit1_triggered() [L329] tmp___0 = is_transmit1_triggered() [L331] COND TRUE \read(tmp___0) [L332] t1_st = 0 [L345] RET activate_threads() [L53] RET immediate_notify() [L54] E_1 = 2 [L55] m_pc = 1 [L56] m_st = 2 [L230] RET master() [L238] COND TRUE t1_st == 0 [L239] int tmp_ndt_2; [L240] tmp_ndt_2 = __VERIFIER_nondet_int() [L241] COND TRUE \read(tmp_ndt_2) [L243] t1_st = 1 [L244] CALL transmit1() [L92] COND FALSE !(t1_pc == 0) [L95] COND TRUE t1_pc == 1 [L111] token += 1 [L112] E_M = 1 [L113] CALL immediate_notify() [L345] CALL activate_threads() [L316] int tmp ; [L317] int tmp___0 ; [L321] CALL, EXPR is_master_triggered() [L125] int __retres1 ; [L128] COND TRUE m_pc == 1 [L129] COND TRUE E_M == 1 [L130] __retres1 = 1 [L140] return (__retres1); [L321] RET, EXPR is_master_triggered() [L321] tmp = is_master_triggered() [L323] COND TRUE \read(tmp) [L324] m_st = 0 [L329] CALL, EXPR is_transmit1_triggered() [L144] int __retres1 ; [L147] COND TRUE t1_pc == 1 [L148] COND FALSE !(E_1 == 1) [L157] __retres1 = 0 [L159] return (__retres1); [L329] RET, EXPR is_transmit1_triggered() [L329] tmp___0 = is_transmit1_triggered() [L331] COND FALSE !(\read(tmp___0)) [L345] RET activate_threads() [L113] RET immediate_notify() [L114] E_M = 2 [L103] COND TRUE 1 [L105] t1_pc = 1 [L106] t1_st = 2 [L244] RET transmit1() [L214] COND TRUE 1 [L217] CALL, EXPR exists_runnable_thread() [L189] int __retres1 ; [L192] COND TRUE m_st == 0 [L193] __retres1 = 1 [L205] return (__retres1); [L217] RET, EXPR exists_runnable_thread() [L217] tmp = exists_runnable_thread() [L219] COND TRUE \read(tmp) [L224] COND TRUE m_st == 0 [L225] int tmp_ndt_1; [L226] tmp_ndt_1 = __VERIFIER_nondet_int() [L227] COND TRUE \read(tmp_ndt_1) [L229] m_st = 1 [L230] CALL master() [L34] int tmp_var = __VERIFIER_nondet_int(); [L36] COND FALSE !(m_pc == 0) [L39] COND TRUE m_pc == 1 [L61] COND FALSE !(token != local + 1) [L66] COND TRUE tmp_var <= 5 [L67] COND TRUE tmp_var >= 5 [L72] COND TRUE tmp_var <= 5 [L73] COND TRUE tmp_var >= 5 [L74] COND TRUE tmp_var == 5 [L75] CALL error() [L12] CALL reach_error() [L3] __assert_fail("0", "token_ring.01.cil-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 22 procedures, 239 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 76.7s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 62.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3294 SDtfs, 18018 SDslu, 1390 SDs, 0 SdLazy, 20244 SolverSat, 6455 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 31.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 929 GetRequests, 536 SyntacticMatches, 2 SemanticMatches, 391 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7214 ImplicationChecksByTransitivity, 13.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6364occurred 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: 7.7s AutomataMinimizationTime, 10 MinimizatonAttempts, 7964 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...