/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-b8ad66e [2020-10-23 22:06:13,807 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:06:13,811 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:06:13,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:06:13,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:06:13,873 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:06:13,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:06:13,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:06:13,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:06:13,913 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:06:13,915 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:06:13,919 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:06:13,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:06:13,921 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:06:13,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:06:13,930 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:06:13,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:06:13,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:06:13,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:06:13,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:06:13,954 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:06:13,957 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:06:13,961 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:06:13,962 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:06:13,968 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 22:06:13,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 22:06:13,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 22:06:13,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 22:06:13,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 22:06:13,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 22:06:13,977 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 22:06:13,979 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 22:06:13,979 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 22:06:13,980 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 22:06:13,981 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 22:06:13,982 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 22:06:13,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 22:06:13,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 22:06:13,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:06:13,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:06:13,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:06:13,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 22:06:13,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:06:13,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:06:13,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:06:14,000 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:06:14,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:06:14,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:06:14,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:06:14,000 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:06:14,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:06:14,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:06:14,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:06:14,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:06:14,001 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:06:14,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:06:14,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:06:14,002 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:06:14,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:06:14,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:06:14,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:06:14,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:06:14,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:06:14,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:06:14,004 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:06:14,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:06:14,381 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:06:14,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:06:14,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:06:14,389 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:06:14,390 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-10-23 22:06:14,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3b77ad4/3d2ce4e233ad43d781b6bb02e85a4d53/FLAG8efbb9912 [2020-10-23 22:06:15,085 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:06:15,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.01.cil-2.c [2020-10-23 22:06:15,101 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3b77ad4/3d2ce4e233ad43d781b6bb02e85a4d53/FLAG8efbb9912 [2020-10-23 22:06:15,412 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d3b77ad4/3d2ce4e233ad43d781b6bb02e85a4d53 [2020-10-23 22:06:15,415 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:06:15,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:06:15,428 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:06:15,429 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:06:15,433 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:06:15,434 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:06:15" (1/1) ... [2020-10-23 22:06:15,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e70b046 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:15, skipping insertion in model container [2020-10-23 22:06:15,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:06:15" (1/1) ... [2020-10-23 22:06:15,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:06:15,510 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:06:15,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:06:15,761 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:06:15,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:06:15,913 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:06:15,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:15 WrapperNode [2020-10-23 22:06:15,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:06:15,917 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:06:15,917 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:06:15,917 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:06:15,934 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:15" (1/1) ... [2020-10-23 22:06:15,935 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:15" (1/1) ... [2020-10-23 22:06:15,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:15" (1/1) ... [2020-10-23 22:06:15,945 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:15" (1/1) ... [2020-10-23 22:06:15,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:15" (1/1) ... [2020-10-23 22:06:15,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:15" (1/1) ... [2020-10-23 22:06:15,976 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:15" (1/1) ... [2020-10-23 22:06:15,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:06:15,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:06:15,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:06:15,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:06:15,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:15" (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 [2020-10-23 22:06:16,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:06:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:06:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:06:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-23 22:06:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-10-23 22:06:16,086 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-10-23 22:06:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-10-23 22:06:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-10-23 22:06:16,087 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-10-23 22:06:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-10-23 22:06:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-10-23 22:06:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-23 22:06:16,088 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-10-23 22:06:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-10-23 22:06:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-10-23 22:06:16,089 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-10-23 22:06:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-10-23 22:06:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-10-23 22:06:16,090 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-10-23 22:06:16,091 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-10-23 22:06:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-23 22:06:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:06:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:06:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:06:16,095 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:06:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:06:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-23 22:06:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-10-23 22:06:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-10-23 22:06:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-10-23 22:06:16,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:06:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-10-23 22:06:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-10-23 22:06:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-10-23 22:06:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-10-23 22:06:16,097 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-10-23 22:06:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-23 22:06:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-10-23 22:06:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-10-23 22:06:16,098 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-10-23 22:06:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-10-23 22:06:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-10-23 22:06:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-10-23 22:06:16,099 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-10-23 22:06:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-23 22:06:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:06:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:06:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:06:16,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:06:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:06:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:06:16,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:06:16,799 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:06:16,800 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-10-23 22:06:16,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:06:16 BoogieIcfgContainer [2020-10-23 22:06:16,803 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:06:16,805 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:06:16,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:06:16,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:06:16,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:06:15" (1/3) ... [2020-10-23 22:06:16,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77343e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:06:16, skipping insertion in model container [2020-10-23 22:06:16,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:15" (2/3) ... [2020-10-23 22:06:16,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77343e1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:06:16, skipping insertion in model container [2020-10-23 22:06:16,810 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:06:16" (3/3) ... [2020-10-23 22:06:16,812 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.01.cil-2.c [2020-10-23 22:06:16,825 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:06:16,833 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:06:16,860 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:06:16,898 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:06:16,899 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:06:16,899 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:06:16,899 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:06:16,899 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:06:16,900 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:06:16,900 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:06:16,900 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:06:16,929 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states. [2020-10-23 22:06:16,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-23 22:06:16,952 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:16,953 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] [2020-10-23 22:06:16,954 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:16,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:16,961 INFO L82 PathProgramCache]: Analyzing trace with hash -394934797, now seen corresponding path program 1 times [2020-10-23 22:06:16,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:16,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871390895] [2020-10-23 22:06:16,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:17,112 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:17,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:17,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:17,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:17,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:06:17,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:17,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 22:06:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:17,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:06:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:17,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-23 22:06:17,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:17,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:06:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:17,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:17,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:17,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-23 22:06:17,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:17,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 22:06:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:17,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 22:06:17,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871390895] [2020-10-23 22:06:17,917 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:17,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:06:17,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845569054] [2020-10-23 22:06:17,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:06:17,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:17,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:06:17,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:06:17,941 INFO L87 Difference]: Start difference. First operand 239 states. Second operand 7 states. [2020-10-23 22:06:20,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:20,650 INFO L93 Difference]: Finished difference Result 807 states and 1081 transitions. [2020-10-23 22:06:20,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 22:06:20,652 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-23 22:06:20,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:20,674 INFO L225 Difference]: With dead ends: 807 [2020-10-23 22:06:20,674 INFO L226 Difference]: Without dead ends: 593 [2020-10-23 22:06:20,685 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 [2020-10-23 22:06:20,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2020-10-23 22:06:20,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 412. [2020-10-23 22:06:20,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-23 22:06:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 501 transitions. [2020-10-23 22:06:20,920 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 501 transitions. Word has length 119 [2020-10-23 22:06:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:20,922 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 501 transitions. [2020-10-23 22:06:20,922 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:06:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 501 transitions. [2020-10-23 22:06:20,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-23 22:06:20,931 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:20,931 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] [2020-10-23 22:06:20,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:06:20,932 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:20,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:20,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1396639943, now seen corresponding path program 1 times [2020-10-23 22:06:20,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:20,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839358983] [2020-10-23 22:06:20,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:21,377 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2020-10-23 22:06:21,566 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:06:21,579 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:21,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:21,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:21,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:06:21,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:21,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 22:06:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:21,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:06:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:21,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-23 22:06:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:21,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:06:21,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:21,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:21,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:21,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:21,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-23 22:06:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:21,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 22:06:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:21,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 22:06:21,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:22,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 22:06:22,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:22,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:22,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:22,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:22,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:22,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:22,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-23 22:06:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-23 22:06:22,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839358983] [2020-10-23 22:06:22,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:22,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 22:06:22,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239342929] [2020-10-23 22:06:22,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 22:06:22,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:22,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 22:06:22,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-23 22:06:22,141 INFO L87 Difference]: Start difference. First operand 412 states and 501 transitions. Second operand 10 states. [2020-10-23 22:06:26,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:26,405 INFO L93 Difference]: Finished difference Result 1573 states and 2156 transitions. [2020-10-23 22:06:26,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 22:06:26,406 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 185 [2020-10-23 22:06:26,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:26,432 INFO L225 Difference]: With dead ends: 1573 [2020-10-23 22:06:26,432 INFO L226 Difference]: Without dead ends: 1209 [2020-10-23 22:06:26,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=215, Invalid=487, Unknown=0, NotChecked=0, Total=702 [2020-10-23 22:06:26,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2020-10-23 22:06:26,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 786. [2020-10-23 22:06:26,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 786 states. [2020-10-23 22:06:26,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 786 states to 786 states and 994 transitions. [2020-10-23 22:06:26,636 INFO L78 Accepts]: Start accepts. Automaton has 786 states and 994 transitions. Word has length 185 [2020-10-23 22:06:26,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:26,637 INFO L481 AbstractCegarLoop]: Abstraction has 786 states and 994 transitions. [2020-10-23 22:06:26,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 22:06:26,638 INFO L276 IsEmpty]: Start isEmpty. Operand 786 states and 994 transitions. [2020-10-23 22:06:26,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-23 22:06:26,643 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:26,644 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] [2020-10-23 22:06:26,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:06:26,644 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:26,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:26,645 INFO L82 PathProgramCache]: Analyzing trace with hash 396419367, now seen corresponding path program 1 times [2020-10-23 22:06:26,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:26,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [554889638] [2020-10-23 22:06:26,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:27,053 WARN L193 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2020-10-23 22:06:27,178 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:06:27,180 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:27,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:27,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:06:27,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 22:06:27,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:06:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-23 22:06:27,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:06:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:27,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-23 22:06:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 22:06:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 22:06:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 22:06:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:27,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-23 22:06:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:27,494 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-23 22:06:27,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [554889638] [2020-10-23 22:06:27,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:27,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 22:06:27,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910372561] [2020-10-23 22:06:27,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 22:06:27,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:27,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 22:06:27,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-23 22:06:27,499 INFO L87 Difference]: Start difference. First operand 786 states and 994 transitions. Second operand 9 states. [2020-10-23 22:06:29,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:29,835 INFO L93 Difference]: Finished difference Result 1834 states and 2385 transitions. [2020-10-23 22:06:29,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 22:06:29,835 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 185 [2020-10-23 22:06:29,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:29,848 INFO L225 Difference]: With dead ends: 1834 [2020-10-23 22:06:29,848 INFO L226 Difference]: Without dead ends: 1094 [2020-10-23 22:06:29,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=141, Invalid=365, Unknown=0, NotChecked=0, Total=506 [2020-10-23 22:06:29,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2020-10-23 22:06:30,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 780. [2020-10-23 22:06:30,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 780 states. [2020-10-23 22:06:30,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 780 states to 780 states and 983 transitions. [2020-10-23 22:06:30,060 INFO L78 Accepts]: Start accepts. Automaton has 780 states and 983 transitions. Word has length 185 [2020-10-23 22:06:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:30,060 INFO L481 AbstractCegarLoop]: Abstraction has 780 states and 983 transitions. [2020-10-23 22:06:30,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 22:06:30,060 INFO L276 IsEmpty]: Start isEmpty. Operand 780 states and 983 transitions. [2020-10-23 22:06:30,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-10-23 22:06:30,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:30,065 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] [2020-10-23 22:06:30,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:06:30,065 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:30,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:30,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1530509083, now seen corresponding path program 1 times [2020-10-23 22:06:30,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:30,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [927370705] [2020-10-23 22:06:30,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:30,484 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2020-10-23 22:06:30,604 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:06:30,605 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-23 22:06:30,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 22:06:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-23 22:06:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-23 22:06:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-23 22:06:30,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:30,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-23 22:06:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-23 22:06:30,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-23 22:06:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-23 22:06:30,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:30,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:30,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-23 22:06:30,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-23 22:06:30,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [927370705] [2020-10-23 22:06:30,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:30,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 22:06:30,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961317958] [2020-10-23 22:06:30,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 22:06:30,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:31,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 22:06:31,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-10-23 22:06:31,001 INFO L87 Difference]: Start difference. First operand 780 states and 983 transitions. Second operand 11 states. [2020-10-23 22:06:38,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:38,976 INFO L93 Difference]: Finished difference Result 4529 states and 6151 transitions. [2020-10-23 22:06:38,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-23 22:06:38,976 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 190 [2020-10-23 22:06:38,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:39,003 INFO L225 Difference]: With dead ends: 4529 [2020-10-23 22:06:39,004 INFO L226 Difference]: Without dead ends: 3794 [2020-10-23 22:06:39,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 914 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=566, Invalid=2296, Unknown=0, NotChecked=0, Total=2862 [2020-10-23 22:06:39,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3794 states. [2020-10-23 22:06:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3794 to 3005. [2020-10-23 22:06:39,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3005 states. [2020-10-23 22:06:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3005 states to 3005 states and 3804 transitions. [2020-10-23 22:06:39,712 INFO L78 Accepts]: Start accepts. Automaton has 3005 states and 3804 transitions. Word has length 190 [2020-10-23 22:06:39,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:39,714 INFO L481 AbstractCegarLoop]: Abstraction has 3005 states and 3804 transitions. [2020-10-23 22:06:39,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 22:06:39,714 INFO L276 IsEmpty]: Start isEmpty. Operand 3005 states and 3804 transitions. [2020-10-23 22:06:39,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-10-23 22:06:39,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:39,728 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] [2020-10-23 22:06:39,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:06:39,728 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:39,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:39,729 INFO L82 PathProgramCache]: Analyzing trace with hash -642684017, now seen corresponding path program 1 times [2020-10-23 22:06:39,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:39,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1280111677] [2020-10-23 22:06:39,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:39,799 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 22:06:39,807 INFO L168 Benchmark]: Toolchain (without parser) took 24386.18 ms. Allocated memory was 155.2 MB in the beginning and 503.3 MB in the end (delta: 348.1 MB). Free memory was 137.0 MB in the beginning and 406.7 MB in the end (delta: -269.7 MB). Peak memory consumption was 78.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:39,808 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:06:39,812 INFO L168 Benchmark]: CACSL2BoogieTranslator took 487.73 ms. Allocated memory is still 155.2 MB. Free memory was 136.3 MB in the beginning and 137.2 MB in the end (delta: -828.8 kB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:39,812 INFO L168 Benchmark]: Boogie Preprocessor took 70.18 ms. Allocated memory is still 155.2 MB. Free memory was 137.2 MB in the beginning and 135.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:39,815 INFO L168 Benchmark]: RCFGBuilder took 812.43 ms. Allocated memory is still 155.2 MB. Free memory was 135.2 MB in the beginning and 96.8 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:39,821 INFO L168 Benchmark]: TraceAbstraction took 23000.09 ms. Allocated memory was 155.2 MB in the beginning and 503.3 MB in the end (delta: 348.1 MB). Free memory was 96.1 MB in the beginning and 406.7 MB in the end (delta: -310.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 8.0 GB. [2020-10-23 22:06:39,831 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 155.2 MB. Free memory is still 128.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 487.73 ms. Allocated memory is still 155.2 MB. Free memory was 136.3 MB in the beginning and 137.2 MB in the end (delta: -828.8 kB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.18 ms. Allocated memory is still 155.2 MB. Free memory was 137.2 MB in the beginning and 135.2 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 812.43 ms. Allocated memory is still 155.2 MB. Free memory was 135.2 MB in the beginning and 96.8 MB in the end (delta: 38.5 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 23000.09 ms. Allocated memory was 155.2 MB in the beginning and 503.3 MB in the end (delta: 348.1 MB). Free memory was 96.1 MB in the beginning and 406.7 MB in the end (delta: -310.6 MB). Peak memory consumption was 38.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...