/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/transmitter.02.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:20:30,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:20:30,552 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:20:30,613 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:20:30,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:20:30,619 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:20:30,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:20:30,632 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:20:30,635 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:20:30,641 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:20:30,642 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:20:30,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:20:30,644 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:20:30,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:20:30,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:20:30,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:20:30,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:20:30,655 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:20:30,662 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:20:30,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:20:30,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:20:30,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:20:30,675 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:20:30,677 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:20:30,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-07 02:20:30,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-07 02:20:30,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-07 02:20:30,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-07 02:20:30,698 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-07 02:20:30,699 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-07 02:20:30,701 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 02:20:30,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 02:20:30,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 02:20:30,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 02:20:30,706 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 02:20:30,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 02:20:30,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 02:20:30,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 02:20:30,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:20:30,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:20:30,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:20:30,710 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 02:20:30,734 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:20:30,734 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:20:30,739 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:20:30,739 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:20:30,739 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:20:30,740 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:20:30,740 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:20:30,740 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:20:30,740 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:20:30,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:20:30,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:20:30,742 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:20:30,742 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:20:30,742 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:20:30,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:20:30,743 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:20:30,743 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:20:30,743 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:20:30,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:20:30,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:20:30,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:20:30,744 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:20:30,744 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:20:31,158 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:20:31,195 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:20:31,199 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:20:31,200 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:20:31,201 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:20:31,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-11-07 02:20:31,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9edf23f3d/5a981945d4af41b6842729b2ab439cb5/FLAGc91a16c81 [2020-11-07 02:20:32,071 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:20:32,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.02.cil.c [2020-11-07 02:20:32,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9edf23f3d/5a981945d4af41b6842729b2ab439cb5/FLAGc91a16c81 [2020-11-07 02:20:32,403 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9edf23f3d/5a981945d4af41b6842729b2ab439cb5 [2020-11-07 02:20:32,406 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:20:32,413 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:20:32,414 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:20:32,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:20:32,419 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:20:32,420 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:20:32" (1/1) ... [2020-11-07 02:20:32,423 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6035d978 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:32, skipping insertion in model container [2020-11-07 02:20:32,424 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:20:32" (1/1) ... [2020-11-07 02:20:32,432 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:20:32,466 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:20:32,725 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:20:32,742 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:20:32,786 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:20:32,821 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:20:32,822 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:32 WrapperNode [2020-11-07 02:20:32,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:20:32,824 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:20:32,824 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:20:32,824 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:20:32,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:32" (1/1) ... [2020-11-07 02:20:32,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:32" (1/1) ... [2020-11-07 02:20:32,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:32" (1/1) ... [2020-11-07 02:20:32,854 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:32" (1/1) ... [2020-11-07 02:20:32,866 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:32" (1/1) ... [2020-11-07 02:20:32,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:32" (1/1) ... [2020-11-07 02:20:32,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:32" (1/1) ... [2020-11-07 02:20:32,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:20:32,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:20:32,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:20:32,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:20:32,902 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:32" (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 02:20:33,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:20:33,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:20:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:20:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-11-07 02:20:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-11-07 02:20:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-11-07 02:20:33,009 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2020-11-07 02:20:33,010 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-11-07 02:20:33,010 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-11-07 02:20:33,010 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2020-11-07 02:20:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-11-07 02:20:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-11-07 02:20:33,011 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-11-07 02:20:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-11-07 02:20:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-11-07 02:20:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-11-07 02:20:33,012 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-11-07 02:20:33,013 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-11-07 02:20:33,013 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-11-07 02:20:33,013 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-11-07 02:20:33,014 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-11-07 02:20:33,015 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-11-07 02:20:33,015 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-11-07 02:20:33,016 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:20:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:20:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:20:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:20:33,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:20:33,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:20:33,017 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-11-07 02:20:33,017 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-11-07 02:20:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-11-07 02:20:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2020-11-07 02:20:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-11-07 02:20:33,018 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-11-07 02:20:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-11-07 02:20:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2020-11-07 02:20:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-11-07 02:20:33,019 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-11-07 02:20:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-11-07 02:20:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-11-07 02:20:33,020 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-11-07 02:20:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-11-07 02:20:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-11-07 02:20:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-11-07 02:20:33,021 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-11-07 02:20:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-11-07 02:20:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-11-07 02:20:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-11-07 02:20:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:20:33,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:20:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:20:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:20:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:20:33,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:20:33,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:20:34,023 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:20:34,023 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-07 02:20:34,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:20:34 BoogieIcfgContainer [2020-11-07 02:20:34,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:20:34,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:20:34,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:20:34,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:20:34,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:20:32" (1/3) ... [2020-11-07 02:20:34,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af0c308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:20:34, skipping insertion in model container [2020-11-07 02:20:34,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:20:32" (2/3) ... [2020-11-07 02:20:34,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1af0c308 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:20:34, skipping insertion in model container [2020-11-07 02:20:34,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:20:34" (3/3) ... [2020-11-07 02:20:34,038 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.02.cil.c [2020-11-07 02:20:34,072 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:20:34,080 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:20:34,117 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:20:34,156 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:20:34,157 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:20:34,157 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:20:34,157 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:20:34,157 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:20:34,157 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:20:34,157 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:20:34,158 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:20:34,190 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states. [2020-11-07 02:20:34,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-07 02:20:34,210 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:20:34,212 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:20:34,212 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:20:34,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:20:34,220 INFO L82 PathProgramCache]: Analyzing trace with hash -129941249, now seen corresponding path program 1 times [2020-11-07 02:20:34,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:20:34,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143572901] [2020-11-07 02:20:34,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:20:34,314 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:20:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:20:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:20:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:20:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 02:20:34,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-11-07 02:20:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:20:34,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:20:34,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-11-07 02:20:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:34,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 02:20:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:35,012 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 02:20:35,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143572901] [2020-11-07 02:20:35,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:20:35,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:20:35,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670165183] [2020-11-07 02:20:35,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:20:35,026 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:20:35,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:20:35,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:20:35,045 INFO L87 Difference]: Start difference. First operand 269 states. Second operand 8 states. [2020-11-07 02:20:37,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:20:37,953 INFO L93 Difference]: Finished difference Result 641 states and 856 transitions. [2020-11-07 02:20:37,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-07 02:20:37,955 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-11-07 02:20:37,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:20:37,974 INFO L225 Difference]: With dead ends: 641 [2020-11-07 02:20:37,975 INFO L226 Difference]: Without dead ends: 403 [2020-11-07 02:20:37,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=105, Invalid=275, Unknown=0, NotChecked=0, Total=380 [2020-11-07 02:20:38,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2020-11-07 02:20:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 255. [2020-11-07 02:20:38,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-11-07 02:20:38,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 307 transitions. [2020-11-07 02:20:38,138 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 307 transitions. Word has length 136 [2020-11-07 02:20:38,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:20:38,139 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 307 transitions. [2020-11-07 02:20:38,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:20:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 307 transitions. [2020-11-07 02:20:38,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-11-07 02:20:38,144 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:20:38,145 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:20:38,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:20:38,145 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:20:38,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:20:38,146 INFO L82 PathProgramCache]: Analyzing trace with hash -1471285089, now seen corresponding path program 1 times [2020-11-07 02:20:38,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:20:38,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221559697] [2020-11-07 02:20:38,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:20:38,151 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:20:38,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:38,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:20:38,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:20:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:20:38,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 02:20:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-11-07 02:20:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:38,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:20:38,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:20:38,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-11-07 02:20:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 02:20:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:38,655 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 02:20:38,656 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221559697] [2020-11-07 02:20:38,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:20:38,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:20:38,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296264455] [2020-11-07 02:20:38,659 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:20:38,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:20:38,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:20:38,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:20:38,662 INFO L87 Difference]: Start difference. First operand 255 states and 307 transitions. Second operand 8 states. [2020-11-07 02:20:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:20:43,010 INFO L93 Difference]: Finished difference Result 1091 states and 1493 transitions. [2020-11-07 02:20:43,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 02:20:43,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 136 [2020-11-07 02:20:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:20:43,042 INFO L225 Difference]: With dead ends: 1091 [2020-11-07 02:20:43,043 INFO L226 Difference]: Without dead ends: 889 [2020-11-07 02:20:43,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-11-07 02:20:43,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2020-11-07 02:20:43,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 486. [2020-11-07 02:20:43,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 486 states. [2020-11-07 02:20:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 606 transitions. [2020-11-07 02:20:43,277 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 606 transitions. Word has length 136 [2020-11-07 02:20:43,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:20:43,280 INFO L481 AbstractCegarLoop]: Abstraction has 486 states and 606 transitions. [2020-11-07 02:20:43,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:20:43,281 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 606 transitions. [2020-11-07 02:20:43,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-11-07 02:20:43,288 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:20:43,289 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:20:43,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:20:43,289 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:20:43,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:20:43,290 INFO L82 PathProgramCache]: Analyzing trace with hash 472748502, now seen corresponding path program 1 times [2020-11-07 02:20:43,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:20:43,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505924770] [2020-11-07 02:20:43,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:20:43,298 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:20:43,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:43,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:20:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:20:43,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:20:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 02:20:43,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-11-07 02:20:43,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:43,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:20:43,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:20:43,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-11-07 02:20:43,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 02:20:43,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:43,577 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 02:20:43,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505924770] [2020-11-07 02:20:43,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:20:43,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:20:43,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731809033] [2020-11-07 02:20:43,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:20:43,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:20:43,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:20:43,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:20:43,580 INFO L87 Difference]: Start difference. First operand 486 states and 606 transitions. Second operand 8 states. [2020-11-07 02:20:45,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:20:45,962 INFO L93 Difference]: Finished difference Result 1201 states and 1566 transitions. [2020-11-07 02:20:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-07 02:20:45,962 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 137 [2020-11-07 02:20:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:20:45,969 INFO L225 Difference]: With dead ends: 1201 [2020-11-07 02:20:45,969 INFO L226 Difference]: Without dead ends: 766 [2020-11-07 02:20:45,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-11-07 02:20:45,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2020-11-07 02:20:46,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 475. [2020-11-07 02:20:46,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 475 states. [2020-11-07 02:20:46,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 589 transitions. [2020-11-07 02:20:46,118 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 589 transitions. Word has length 137 [2020-11-07 02:20:46,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:20:46,119 INFO L481 AbstractCegarLoop]: Abstraction has 475 states and 589 transitions. [2020-11-07 02:20:46,119 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:20:46,119 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 589 transitions. [2020-11-07 02:20:46,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-11-07 02:20:46,132 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:20:46,132 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:20:46,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:20:46,133 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:20:46,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:20:46,134 INFO L82 PathProgramCache]: Analyzing trace with hash 536543913, now seen corresponding path program 1 times [2020-11-07 02:20:46,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:20:46,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936312584] [2020-11-07 02:20:46,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:20:46,137 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:20:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:20:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:20:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:20:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 02:20:46,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-11-07 02:20:46,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:20:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:20:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-11-07 02:20:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 02:20:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:46,438 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 02:20:46,439 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936312584] [2020-11-07 02:20:46,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:20:46,440 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-07 02:20:46,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045594011] [2020-11-07 02:20:46,441 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:20:46,441 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:20:46,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:20:46,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-11-07 02:20:46,442 INFO L87 Difference]: Start difference. First operand 475 states and 589 transitions. Second operand 8 states. [2020-11-07 02:20:50,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:20:50,923 INFO L93 Difference]: Finished difference Result 2156 states and 3100 transitions. [2020-11-07 02:20:50,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-07 02:20:50,924 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2020-11-07 02:20:50,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:20:50,945 INFO L225 Difference]: With dead ends: 2156 [2020-11-07 02:20:50,946 INFO L226 Difference]: Without dead ends: 1733 [2020-11-07 02:20:50,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2020-11-07 02:20:50,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2020-11-07 02:20:51,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 933. [2020-11-07 02:20:51,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 933 states. [2020-11-07 02:20:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 933 states to 933 states and 1198 transitions. [2020-11-07 02:20:51,202 INFO L78 Accepts]: Start accepts. Automaton has 933 states and 1198 transitions. Word has length 141 [2020-11-07 02:20:51,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:20:51,203 INFO L481 AbstractCegarLoop]: Abstraction has 933 states and 1198 transitions. [2020-11-07 02:20:51,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:20:51,203 INFO L276 IsEmpty]: Start isEmpty. Operand 933 states and 1198 transitions. [2020-11-07 02:20:51,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-11-07 02:20:51,205 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:20:51,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:20:51,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-07 02:20:51,206 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:20:51,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:20:51,207 INFO L82 PathProgramCache]: Analyzing trace with hash 2073728959, now seen corresponding path program 1 times [2020-11-07 02:20:51,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:20:51,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107533507] [2020-11-07 02:20:51,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:20:51,209 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:20:51,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:51,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:20:51,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:20:51,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:20:51,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 02:20:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-11-07 02:20:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:20:51,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:20:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-11-07 02:20:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-11-07 02:20:51,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:51,452 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 02:20:51,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107533507] [2020-11-07 02:20:51,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:20:51,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 02:20:51,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030873486] [2020-11-07 02:20:51,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-07 02:20:51,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:20:51,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-07 02:20:51,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-07 02:20:51,456 INFO L87 Difference]: Start difference. First operand 933 states and 1198 transitions. Second operand 7 states. [2020-11-07 02:20:51,788 WARN L194 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-11-07 02:20:55,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:20:55,179 INFO L93 Difference]: Finished difference Result 3777 states and 5420 transitions. [2020-11-07 02:20:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-07 02:20:55,179 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-11-07 02:20:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:20:55,205 INFO L225 Difference]: With dead ends: 3777 [2020-11-07 02:20:55,205 INFO L226 Difference]: Without dead ends: 2895 [2020-11-07 02:20:55,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-11-07 02:20:55,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2895 states. [2020-11-07 02:20:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2895 to 1862. [2020-11-07 02:20:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1862 states. [2020-11-07 02:20:55,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1862 states to 1862 states and 2433 transitions. [2020-11-07 02:20:55,612 INFO L78 Accepts]: Start accepts. Automaton has 1862 states and 2433 transitions. Word has length 146 [2020-11-07 02:20:55,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:20:55,612 INFO L481 AbstractCegarLoop]: Abstraction has 1862 states and 2433 transitions. [2020-11-07 02:20:55,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-07 02:20:55,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1862 states and 2433 transitions. [2020-11-07 02:20:55,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-11-07 02:20:55,617 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:20:55,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:55,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-07 02:20:55,618 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:20:55,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:20:55,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1715045866, now seen corresponding path program 1 times [2020-11-07 02:20:55,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:20:55,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622847569] [2020-11-07 02:20:55,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:20:55,757 WARN L194 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-11-07 02:20:56,235 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 02:20:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:20:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-11-07 02:20:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-11-07 02:20:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-11-07 02:20:56,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-11-07 02:20:56,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-11-07 02:20:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-11-07 02:20:56,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-11-07 02:20:56,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-11-07 02:20:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-11-07 02:20:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-11-07 02:20:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:20:56,725 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 02:20:57,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622847569] [2020-11-07 02:20:57,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:20:57,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [32] imperfect sequences [] total 32 [2020-11-07 02:20:57,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878736200] [2020-11-07 02:20:57,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-07 02:20:57,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:20:57,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-07 02:20:57,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=218, Invalid=904, Unknown=0, NotChecked=0, Total=1122 [2020-11-07 02:20:57,792 INFO L87 Difference]: Start difference. First operand 1862 states and 2433 transitions. Second operand 33 states. [2020-11-07 02:20:59,698 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-11-07 02:21:00,310 WARN L194 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:21:00,456 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-11-07 02:21:00,625 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:21:01,006 WARN L194 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 02:21:01,206 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:21:01,400 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:21:01,618 WARN L194 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:21:01,800 WARN L194 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:21:02,109 WARN L194 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-11-07 02:21:03,425 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-11-07 02:21:07,116 WARN L194 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:21:08,040 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-11-07 02:21:14,097 WARN L194 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 88 [2020-11-07 02:21:14,417 WARN L194 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 95 [2020-11-07 02:21:14,596 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-11-07 02:21:17,881 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-11-07 02:21:22,363 WARN L194 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:21:22,492 WARN L194 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:21:22,892 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:21:23,039 WARN L194 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:21:23,188 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:21:23,382 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-11-07 02:21:23,535 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-11-07 02:21:23,706 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:21:23,876 WARN L194 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:21:24,040 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-11-07 02:21:24,219 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-11-07 02:21:25,553 WARN L194 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:21:25,713 WARN L194 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-11-07 02:21:25,869 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-11-07 02:21:26,030 WARN L194 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-11-07 02:21:27,037 WARN L194 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-11-07 02:21:27,346 WARN L194 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 92 [2020-11-07 02:21:27,680 WARN L194 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 96 [2020-11-07 02:21:27,970 WARN L194 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-11-07 02:21:28,285 WARN L194 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2020-11-07 02:21:28,572 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 89 [2020-11-07 02:21:29,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:21:29,494 INFO L93 Difference]: Finished difference Result 7196 states and 10454 transitions. [2020-11-07 02:21:29,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2020-11-07 02:21:29,495 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 184 [2020-11-07 02:21:29,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:21:29,536 INFO L225 Difference]: With dead ends: 7196 [2020-11-07 02:21:29,536 INFO L226 Difference]: Without dead ends: 5386 [2020-11-07 02:21:29,579 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 138 SyntacticMatches, 2 SemanticMatches, 258 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29941 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=10395, Invalid=56945, Unknown=0, NotChecked=0, Total=67340 [2020-11-07 02:21:29,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5386 states. [2020-11-07 02:21:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5386 to 3164. [2020-11-07 02:21:30,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-11-07 02:21:30,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 4266 transitions. [2020-11-07 02:21:30,476 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 4266 transitions. Word has length 184 [2020-11-07 02:21:30,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:21:30,477 INFO L481 AbstractCegarLoop]: Abstraction has 3164 states and 4266 transitions. [2020-11-07 02:21:30,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-07 02:21:30,477 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 4266 transitions. [2020-11-07 02:21:30,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-11-07 02:21:30,493 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:21:30,494 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:21:30,495 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-07 02:21:30,495 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:21:30,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:21:30,495 INFO L82 PathProgramCache]: Analyzing trace with hash -116105316, now seen corresponding path program 1 times [2020-11-07 02:21:30,496 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:21:30,496 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431062838] [2020-11-07 02:21:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:21:30,629 WARN L194 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2020-11-07 02:21:30,932 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.AcceleratedInterpolation.accelerateNestedLoops(AcceleratedInterpolation.java:569) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:275) 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:343) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:149) 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) [2020-11-07 02:21:30,938 INFO L168 Benchmark]: Toolchain (without parser) took 58528.87 ms. Allocated memory was 161.5 MB in the beginning and 974.1 MB in the end (delta: 812.6 MB). Free memory was 137.5 MB in the beginning and 807.1 MB in the end (delta: -669.6 MB). Peak memory consumption was 143.3 MB. Max. memory is 8.0 GB. [2020-11-07 02:21:30,938 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 161.5 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:21:30,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 408.05 ms. Allocated memory is still 161.5 MB. Free memory was 136.9 MB in the beginning and 123.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:21:30,940 INFO L168 Benchmark]: Boogie Preprocessor took 73.46 ms. Allocated memory is still 161.5 MB. Free memory was 123.2 MB in the beginning and 121.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:21:30,941 INFO L168 Benchmark]: RCFGBuilder took 1128.71 ms. Allocated memory is still 161.5 MB. Free memory was 121.1 MB in the beginning and 126.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:21:30,942 INFO L168 Benchmark]: TraceAbstraction took 56906.14 ms. Allocated memory was 161.5 MB in the beginning and 974.1 MB in the end (delta: 812.6 MB). Free memory was 125.5 MB in the beginning and 807.1 MB in the end (delta: -681.7 MB). Peak memory consumption was 131.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:21:30,947 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 161.5 MB. Free memory is still 136.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 408.05 ms. Allocated memory is still 161.5 MB. Free memory was 136.9 MB in the beginning and 123.2 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 73.46 ms. Allocated memory is still 161.5 MB. Free memory was 123.2 MB in the beginning and 121.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1128.71 ms. Allocated memory is still 161.5 MB. Free memory was 121.1 MB in the beginning and 126.0 MB in the end (delta: -5.0 MB). Peak memory consumption was 28.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 56906.14 ms. Allocated memory was 161.5 MB in the beginning and 974.1 MB in the end (delta: 812.6 MB). Free memory was 125.5 MB in the beginning and 807.1 MB in the end (delta: -681.7 MB). Peak memory consumption was 131.5 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.AcceleratedInterpolation.accelerateNestedLoops(AcceleratedInterpolation.java:569) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...