/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.01.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 22:06:42,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 22:06:42,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 22:06:42,739 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 22:06:42,739 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 22:06:42,741 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 22:06:42,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 22:06:42,750 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 22:06:42,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 22:06:42,758 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 22:06:42,763 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 22:06:42,766 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 22:06:42,767 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 22:06:42,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 22:06:42,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 22:06:42,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 22:06:42,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 22:06:42,790 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 22:06:42,799 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 22:06:42,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 22:06:42,804 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 22:06:42,811 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 22:06:42,812 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 22:06:42,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 22:06:42,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 22:06:42,823 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 22:06:42,824 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 22:06:42,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 22:06:42,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 22:06:42,828 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 22:06:42,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 22:06:42,829 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 22:06:42,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 22:06:42,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 22:06:42,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 22:06:42,834 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 22:06:42,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 22:06:42,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 22:06:42,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 22:06:42,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 22:06:42,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 22:06:42,839 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 22:06:42,866 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 22:06:42,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 22:06:42,871 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 22:06:42,871 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 22:06:42,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 22:06:42,871 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 22:06:42,872 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 22:06:42,872 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 22:06:42,872 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 22:06:42,872 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 22:06:42,873 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 22:06:42,874 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 22:06:42,874 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 22:06:42,874 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 22:06:42,874 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 22:06:42,875 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 22:06:42,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 22:06:42,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 22:06:42,875 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 22:06:42,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 22:06:42,876 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 22:06:42,876 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 22:06:42,876 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 22:06:43,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 22:06:43,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 22:06:43,325 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 22:06:43,326 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 22:06:43,327 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 22:06:43,328 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-10-23 22:06:43,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de24162b/95148f11cc654b5eaa6aa00035e85e1d/FLAG52d8546c2 [2020-10-23 22:06:44,113 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 22:06:44,114 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.01.cil.c [2020-10-23 22:06:44,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de24162b/95148f11cc654b5eaa6aa00035e85e1d/FLAG52d8546c2 [2020-10-23 22:06:44,440 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1de24162b/95148f11cc654b5eaa6aa00035e85e1d [2020-10-23 22:06:44,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 22:06:44,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 22:06:44,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 22:06:44,456 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 22:06:44,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 22:06:44,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:06:44" (1/1) ... [2020-10-23 22:06:44,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5a2305 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:44, skipping insertion in model container [2020-10-23 22:06:44,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:06:44" (1/1) ... [2020-10-23 22:06:44,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 22:06:44,503 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 22:06:44,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:06:44,735 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 22:06:44,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 22:06:44,801 INFO L208 MainTranslator]: Completed translation [2020-10-23 22:06:44,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:44 WrapperNode [2020-10-23 22:06:44,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 22:06:44,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 22:06:44,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 22:06:44,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 22:06:44,817 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:44" (1/1) ... [2020-10-23 22:06:44,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:44" (1/1) ... [2020-10-23 22:06:44,828 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:44" (1/1) ... [2020-10-23 22:06:44,828 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:44" (1/1) ... [2020-10-23 22:06:44,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:44" (1/1) ... [2020-10-23 22:06:44,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:44" (1/1) ... [2020-10-23 22:06:44,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:44" (1/1) ... [2020-10-23 22:06:44,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 22:06:44,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 22:06:44,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 22:06:44,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 22:06:44,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:44" (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 22:06:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 22:06:44,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 22:06:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 22:06:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2020-10-23 22:06:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2020-10-23 22:06:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2020-10-23 22:06:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2020-10-23 22:06:44,954 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2020-10-23 22:06:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2020-10-23 22:06:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2020-10-23 22:06:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2020-10-23 22:06:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-10-23 22:06:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2020-10-23 22:06:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2020-10-23 22:06:44,955 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2020-10-23 22:06:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2020-10-23 22:06:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2020-10-23 22:06:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2020-10-23 22:06:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2020-10-23 22:06:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2020-10-23 22:06:44,956 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2020-10-23 22:06:44,957 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 22:06:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 22:06:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 22:06:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 22:06:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 22:06:44,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 22:06:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure error [2020-10-23 22:06:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2020-10-23 22:06:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2020-10-23 22:06:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2020-10-23 22:06:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure master [2020-10-23 22:06:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2020-10-23 22:06:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2020-10-23 22:06:44,958 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2020-10-23 22:06:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2020-10-23 22:06:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-10-23 22:06:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2020-10-23 22:06:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2020-10-23 22:06:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2020-10-23 22:06:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2020-10-23 22:06:44,959 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2020-10-23 22:06:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2020-10-23 22:06:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2020-10-23 22:06:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2020-10-23 22:06:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 22:06:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 22:06:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 22:06:44,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 22:06:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 22:06:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 22:06:44,961 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 22:06:45,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 22:06:45,567 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-23 22:06:45,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:06:45 BoogieIcfgContainer [2020-10-23 22:06:45,570 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 22:06:45,572 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 22:06:45,572 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 22:06:45,576 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 22:06:45,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:06:44" (1/3) ... [2020-10-23 22:06:45,577 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d8c060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:06:45, skipping insertion in model container [2020-10-23 22:06:45,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:06:44" (2/3) ... [2020-10-23 22:06:45,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62d8c060 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:06:45, skipping insertion in model container [2020-10-23 22:06:45,578 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:06:45" (3/3) ... [2020-10-23 22:06:45,580 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.01.cil.c [2020-10-23 22:06:45,594 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 22:06:45,600 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 22:06:45,617 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 22:06:45,644 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 22:06:45,645 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 22:06:45,645 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 22:06:45,645 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 22:06:45,645 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 22:06:45,645 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 22:06:45,645 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 22:06:45,646 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 22:06:45,670 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states. [2020-10-23 22:06:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-23 22:06:45,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:45,689 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] [2020-10-23 22:06:45,689 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:45,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:45,696 INFO L82 PathProgramCache]: Analyzing trace with hash -1428806006, now seen corresponding path program 1 times [2020-10-23 22:06:45,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:45,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633714590] [2020-10-23 22:06:45,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:45,789 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:46,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:46,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 22:06:46,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:46,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 22:06:46,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:46,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 22:06:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:46,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 22:06:46,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:46,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-23 22:06:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:46,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:46,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-23 22:06:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:46,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 22:06:46,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:46,358 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 22:06:46,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633714590] [2020-10-23 22:06:46,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:46,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:06:46,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205173001] [2020-10-23 22:06:46,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:06:46,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:46,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:06:46,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:06:46,392 INFO L87 Difference]: Start difference. First operand 213 states. Second operand 8 states. [2020-10-23 22:06:50,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:50,170 INFO L93 Difference]: Finished difference Result 814 states and 1170 transitions. [2020-10-23 22:06:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-23 22:06:50,173 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 111 [2020-10-23 22:06:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:50,199 INFO L225 Difference]: With dead ends: 814 [2020-10-23 22:06:50,199 INFO L226 Difference]: Without dead ends: 614 [2020-10-23 22:06:50,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=384, Unknown=0, NotChecked=0, Total=552 [2020-10-23 22:06:50,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2020-10-23 22:06:50,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 359. [2020-10-23 22:06:50,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-23 22:06:50,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 443 transitions. [2020-10-23 22:06:50,422 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 443 transitions. Word has length 111 [2020-10-23 22:06:50,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:50,423 INFO L481 AbstractCegarLoop]: Abstraction has 359 states and 443 transitions. [2020-10-23 22:06:50,423 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:06:50,424 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 443 transitions. [2020-10-23 22:06:50,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-23 22:06:50,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:50,430 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] [2020-10-23 22:06:50,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 22:06:50,430 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:50,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:50,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2138316646, now seen corresponding path program 1 times [2020-10-23 22:06:50,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:50,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [420934864] [2020-10-23 22:06:50,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:50,437 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:50,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:50,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:50,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 22:06:50,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:50,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 22:06:50,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:50,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 22:06:50,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 22:06:50,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:50,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-23 22:06:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:50,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:50,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:50,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:50,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-23 22:06:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:50,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 22:06:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:50,740 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 22:06:50,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [420934864] [2020-10-23 22:06:50,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:50,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-23 22:06:50,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484759090] [2020-10-23 22:06:50,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-23 22:06:50,744 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:50,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-23 22:06:50,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-23 22:06:50,749 INFO L87 Difference]: Start difference. First operand 359 states and 443 transitions. Second operand 8 states. [2020-10-23 22:06:52,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:52,602 INFO L93 Difference]: Finished difference Result 846 states and 1094 transitions. [2020-10-23 22:06:52,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 22:06:52,603 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 112 [2020-10-23 22:06:52,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:52,620 INFO L225 Difference]: With dead ends: 846 [2020-10-23 22:06:52,621 INFO L226 Difference]: Without dead ends: 530 [2020-10-23 22:06:52,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-10-23 22:06:52,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 530 states. [2020-10-23 22:06:52,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 530 to 350. [2020-10-23 22:06:52,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2020-10-23 22:06:52,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 428 transitions. [2020-10-23 22:06:52,762 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 428 transitions. Word has length 112 [2020-10-23 22:06:52,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:52,765 INFO L481 AbstractCegarLoop]: Abstraction has 350 states and 428 transitions. [2020-10-23 22:06:52,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-23 22:06:52,765 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 428 transitions. [2020-10-23 22:06:52,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-23 22:06:52,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:52,778 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] [2020-10-23 22:06:52,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 22:06:52,779 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:52,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:52,779 INFO L82 PathProgramCache]: Analyzing trace with hash 247926262, now seen corresponding path program 1 times [2020-10-23 22:06:52,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:52,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1742165660] [2020-10-23 22:06:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:52,791 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 22:06:52,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:52,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 22:06:52,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:52,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-23 22:06:52,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:52,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 22:06:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:52,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-23 22:06:52,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:53,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-23 22:06:53,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:53,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-23 22:06:53,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:53,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 22:06:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:53,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-23 22:06:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:53,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-23 22:06:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:53,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-23 22:06:53,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 22:06:53,050 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 22:06:53,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1742165660] [2020-10-23 22:06:53,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 22:06:53,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 22:06:53,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381936510] [2020-10-23 22:06:53,052 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 22:06:53,052 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 22:06:53,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 22:06:53,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-23 22:06:53,053 INFO L87 Difference]: Start difference. First operand 350 states and 428 transitions. Second operand 7 states. [2020-10-23 22:06:55,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 22:06:55,266 INFO L93 Difference]: Finished difference Result 1289 states and 1732 transitions. [2020-10-23 22:06:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-23 22:06:55,267 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 116 [2020-10-23 22:06:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 22:06:55,277 INFO L225 Difference]: With dead ends: 1289 [2020-10-23 22:06:55,277 INFO L226 Difference]: Without dead ends: 982 [2020-10-23 22:06:55,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-10-23 22:06:55,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 982 states. [2020-10-23 22:06:55,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 982 to 671. [2020-10-23 22:06:55,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 671 states. [2020-10-23 22:06:55,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 834 transitions. [2020-10-23 22:06:55,458 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 834 transitions. Word has length 116 [2020-10-23 22:06:55,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 22:06:55,460 INFO L481 AbstractCegarLoop]: Abstraction has 671 states and 834 transitions. [2020-10-23 22:06:55,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 22:06:55,461 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 834 transitions. [2020-10-23 22:06:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-23 22:06:55,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 22:06:55,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:06:55,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 22:06:55,465 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 22:06:55,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 22:06:55,466 INFO L82 PathProgramCache]: Analyzing trace with hash 2027254963, now seen corresponding path program 1 times [2020-10-23 22:06:55,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 22:06:55,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [633209386] [2020-10-23 22:06:55,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 22:06:55,585 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-23 22:06:55,906 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-10-23 22:06:56,055 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-23 22:06:56,351 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-23 22:06:56,517 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-23 22:06:56,843 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-10-23 22:06:57,012 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2020-10-23 22:06:57,171 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 38 [2020-10-23 22:06:57,352 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2020-10-23 22:06:57,989 WARN L193 SmtUtils]: Spent 333.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-23 22:06:58,427 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-23 22:06:58,437 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:06:58,629 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:06:58,838 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:06:59,051 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:06:59,237 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:06:59,565 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-10-23 22:06:59,821 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 91 [2020-10-23 22:06:59,962 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:07:00,306 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:07:00,559 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-10-23 22:07:00,813 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 92 [2020-10-23 22:07:01,193 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 120 [2020-10-23 22:07:01,205 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:07:01,385 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 22:07:01,386 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-10-23 22:07:01,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 22:07:01,390 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.generateMetaTrace(AcceleratedInterpolation.java:448) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:328) 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 22:07:01,396 INFO L168 Benchmark]: Toolchain (without parser) took 16946.99 ms. Allocated memory was 153.1 MB in the beginning and 342.9 MB in the end (delta: 189.8 MB). Free memory was 129.9 MB in the beginning and 286.5 MB in the end (delta: -156.6 MB). Peak memory consumption was 34.4 MB. Max. memory is 8.0 GB. [2020-10-23 22:07:01,397 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 127.5 MB in the end (delta: 121.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 22:07:01,398 INFO L168 Benchmark]: CACSL2BoogieTranslator took 346.76 ms. Allocated memory is still 153.1 MB. Free memory was 129.3 MB in the beginning and 116.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 22:07:01,398 INFO L168 Benchmark]: Boogie Preprocessor took 61.10 ms. Allocated memory is still 153.1 MB. Free memory was 116.8 MB in the beginning and 114.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 22:07:01,399 INFO L168 Benchmark]: RCFGBuilder took 704.76 ms. Allocated memory is still 153.1 MB. Free memory was 114.9 MB in the beginning and 112.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. [2020-10-23 22:07:01,400 INFO L168 Benchmark]: TraceAbstraction took 15822.28 ms. Allocated memory was 153.1 MB in the beginning and 342.9 MB in the end (delta: 189.8 MB). Free memory was 111.9 MB in the beginning and 286.5 MB in the end (delta: -174.6 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-23 22:07:01,404 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 153.1 MB. Free memory was 127.6 MB in the beginning and 127.5 MB in the end (delta: 121.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 346.76 ms. Allocated memory is still 153.1 MB. Free memory was 129.3 MB in the beginning and 116.8 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.10 ms. Allocated memory is still 153.1 MB. Free memory was 116.8 MB in the beginning and 114.9 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 704.76 ms. Allocated memory is still 153.1 MB. Free memory was 114.9 MB in the beginning and 112.4 MB in the end (delta: 2.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 15822.28 ms. Allocated memory was 153.1 MB in the beginning and 342.9 MB in the end (delta: 189.8 MB). Free memory was 111.9 MB in the beginning and 286.5 MB in the end (delta: -174.6 MB). Peak memory consumption was 15.7 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.generateMetaTrace(AcceleratedInterpolation.java:448) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...