/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:49:41,979 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:49:41,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:49:42,021 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 04:49:42,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 04:49:42,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 04:49:42,025 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 04:49:42,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 04:49:42,030 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 04:49:42,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 04:49:42,033 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 04:49:42,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 04:49:42,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:49:42,037 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:49:42,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:49:42,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:49:42,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:49:42,043 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:49:42,045 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:49:42,056 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:49:42,059 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:49:42,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:49:42,064 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:49:42,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:49:42,077 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:49:42,093 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:49:42,095 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:49:42,096 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:49:42,099 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:49:42,129 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:49:42,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:49:42,131 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:49:42,132 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:49:42,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:49:42,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:49:42,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:49:42,133 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:49:42,133 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:49:42,133 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:49:42,133 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:49:42,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:49:42,134 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:49:42,134 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:49:42,134 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:49:42,134 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:49:42,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:49:42,135 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:49:42,135 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:49:42,135 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:49:42,135 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:49:42,136 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:49:42,136 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:49:42,136 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:49:42,568 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:49:42,599 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:49:42,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:49:42,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:49:42,607 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:49:42,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2021-02-24 04:49:42,707 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b50d878/38aa73146d2442be9afa266d9c9f7f32/FLAG7f2ebe344 [2021-02-24 04:49:43,537 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:49:43,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c [2021-02-24 04:49:43,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b50d878/38aa73146d2442be9afa266d9c9f7f32/FLAG7f2ebe344 [2021-02-24 04:49:43,804 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90b50d878/38aa73146d2442be9afa266d9c9f7f32 [2021-02-24 04:49:43,812 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:49:43,828 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:49:43,833 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:49:43,833 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:49:43,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:49:43,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:49:43" (1/1) ... [2021-02-24 04:49:43,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b8affa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:43, skipping insertion in model container [2021-02-24 04:49:43,843 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:49:43" (1/1) ... [2021-02-24 04:49:43,853 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:49:43,925 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:49:44,220 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2021-02-24 04:49:44,237 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:49:44,250 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:49:44,399 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-industry-pattern/aiob_4.c.v+lhb-reducer.c[15516,15529] [2021-02-24 04:49:44,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:49:44,442 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:49:44,443 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:44 WrapperNode [2021-02-24 04:49:44,443 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:49:44,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:49:44,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:49:44,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:49:44,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:44" (1/1) ... [2021-02-24 04:49:44,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:44" (1/1) ... [2021-02-24 04:49:44,483 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:44" (1/1) ... [2021-02-24 04:49:44,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:44" (1/1) ... [2021-02-24 04:49:44,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:44" (1/1) ... [2021-02-24 04:49:44,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:44" (1/1) ... [2021-02-24 04:49:44,548 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:44" (1/1) ... [2021-02-24 04:49:44,556 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:49:44,557 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:49:44,558 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:49:44,558 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:49:44,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:44" (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 [2021-02-24 04:49:44,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:49:44,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:49:44,724 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:49:44,724 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:49:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:49:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:49:44,724 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:49:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:49:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure Id_MCDC_89 [2021-02-24 04:49:44,725 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2021-02-24 04:49:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:49:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:49:44,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:49:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-24 04:49:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:49:44,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:49:44,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:49:44,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:49:44,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-24 04:49:44,732 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:49:46,620 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:49:46,620 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:49:46,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:49:46 BoogieIcfgContainer [2021-02-24 04:49:46,624 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:49:46,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:49:46,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:49:46,630 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:49:46,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:49:43" (1/3) ... [2021-02-24 04:49:46,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ada36ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:49:46, skipping insertion in model container [2021-02-24 04:49:46,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:49:44" (2/3) ... [2021-02-24 04:49:46,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ada36ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:49:46, skipping insertion in model container [2021-02-24 04:49:46,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:49:46" (3/3) ... [2021-02-24 04:49:46,635 INFO L111 eAbstractionObserver]: Analyzing ICFG aiob_4.c.v+lhb-reducer.c [2021-02-24 04:49:46,643 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:49:46,651 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:49:46,675 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:49:46,705 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:49:46,705 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:49:46,705 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:49:46,705 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:49:46,706 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:49:46,706 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:49:46,706 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:49:46,706 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:49:46,741 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states. [2021-02-24 04:49:46,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2021-02-24 04:49:46,782 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:49:46,783 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:49:46,784 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:49:46,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:49:46,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1567792989, now seen corresponding path program 1 times [2021-02-24 04:49:46,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:49:46,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [327232647] [2021-02-24 04:49:46,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:49:46,894 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:49:47,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:49:47,900 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:47,901 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:47,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:47,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:49:47,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:47,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:49:47,943 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:47,946 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:49:47,960 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:47,961 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:49:47,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:47,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:49:47,996 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:47,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:49:48,017 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:48,022 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:49:48,041 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:48,045 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:49:48,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:48,069 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:49:48,091 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:48,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:49:48,137 WARN L141 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size [2021-02-24 04:49:48,139 WARN L147 QuantifierPusher]: treesize reduction 1, result has 95.8 percent of original size 23 [2021-02-24 04:49:48,186 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:48,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:48,435 WARN L202 SmtUtils]: Spent 178.00 ms on a formula simplification that was a NOOP. DAG size: 121 [2021-02-24 04:49:48,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:49:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:49:48,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:49:48,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:49:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:49:48,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [327232647] [2021-02-24 04:49:48,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:49:48,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 04:49:48,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086499747] [2021-02-24 04:49:48,954 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 04:49:48,955 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:49:48,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 04:49:48,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-02-24 04:49:48,974 INFO L87 Difference]: Start difference. First operand 731 states. Second operand 14 states. [2021-02-24 04:49:49,352 WARN L202 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 129 [2021-02-24 04:49:52,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:49:52,318 INFO L93 Difference]: Finished difference Result 811 states and 855 transitions. [2021-02-24 04:49:52,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-02-24 04:49:52,321 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 493 [2021-02-24 04:49:52,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:49:52,342 INFO L225 Difference]: With dead ends: 811 [2021-02-24 04:49:52,343 INFO L226 Difference]: Without dead ends: 537 [2021-02-24 04:49:52,350 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2021-02-24 04:49:52,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 537 states. [2021-02-24 04:49:52,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 537 to 517. [2021-02-24 04:49:52,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 517 states. [2021-02-24 04:49:52,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 517 transitions. [2021-02-24 04:49:52,515 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 517 transitions. Word has length 493 [2021-02-24 04:49:52,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:49:52,520 INFO L480 AbstractCegarLoop]: Abstraction has 517 states and 517 transitions. [2021-02-24 04:49:52,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 04:49:52,521 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 517 transitions. [2021-02-24 04:49:52,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2021-02-24 04:49:52,544 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:49:52,546 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:49:52,546 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:49:52,547 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:49:52,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:49:52,548 INFO L82 PathProgramCache]: Analyzing trace with hash -1030040449, now seen corresponding path program 1 times [2021-02-24 04:49:52,549 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:49:52,549 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174113770] [2021-02-24 04:49:52,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:49:55,456 WARN L202 SmtUtils]: Spent 2.87 s on a formula simplification. DAG size of input: 154 DAG size of output: 135 [2021-02-24 04:49:55,471 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.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) 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:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:131) 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$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-02-24 04:49:55,477 INFO L168 Benchmark]: Toolchain (without parser) took 11661.87 ms. Allocated memory was 160.4 MB in the beginning and 302.0 MB in the end (delta: 141.6 MB). Free memory was 135.2 MB in the beginning and 256.4 MB in the end (delta: -121.2 MB). Peak memory consumption was 190.2 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:55,478 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 160.4 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:49:55,479 INFO L168 Benchmark]: CACSL2BoogieTranslator took 610.82 ms. Allocated memory is still 160.4 MB. Free memory was 133.8 MB in the beginning and 113.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:55,480 INFO L168 Benchmark]: Boogie Preprocessor took 111.93 ms. Allocated memory is still 160.4 MB. Free memory was 113.9 MB in the beginning and 109.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:55,481 INFO L168 Benchmark]: RCFGBuilder took 2066.41 ms. Allocated memory was 160.4 MB in the beginning and 198.2 MB in the end (delta: 37.7 MB). Free memory was 108.9 MB in the beginning and 146.7 MB in the end (delta: -37.8 MB). Peak memory consumption was 47.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:55,482 INFO L168 Benchmark]: TraceAbstraction took 8849.56 ms. Allocated memory was 198.2 MB in the beginning and 302.0 MB in the end (delta: 103.8 MB). Free memory was 146.7 MB in the beginning and 256.4 MB in the end (delta: -109.7 MB). Peak memory consumption was 162.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:49:55,486 INFO L339 ainManager$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 160.4 MB. Free memory is still 134.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 610.82 ms. Allocated memory is still 160.4 MB. Free memory was 133.8 MB in the beginning and 113.9 MB in the end (delta: 20.0 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 111.93 ms. Allocated memory is still 160.4 MB. Free memory was 113.9 MB in the beginning and 109.2 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 2066.41 ms. Allocated memory was 160.4 MB in the beginning and 198.2 MB in the end (delta: 37.7 MB). Free memory was 108.9 MB in the beginning and 146.7 MB in the end (delta: -37.8 MB). Peak memory consumption was 47.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 8849.56 ms. Allocated memory was 198.2 MB in the beginning and 302.0 MB in the end (delta: 103.8 MB). Free memory was 146.7 MB in the beginning and 256.4 MB in the end (delta: -109.7 MB). Peak memory consumption was 162.4 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.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...