/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/bitvector/soft_float_2a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:25:44,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:25:44,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:25:45,012 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:25:45,012 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:25:45,016 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:25:45,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:25:45,028 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:25:45,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:25:45,038 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:25:45,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:25:45,041 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:25:45,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:25:45,045 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:25:45,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:25:45,050 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:25:45,051 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:25:45,054 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:25:45,075 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:25:45,084 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:25:45,086 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:25:45,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:25:45,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:25:45,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:25:45,100 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:25:45,106 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:25:45,107 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:25:45,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:25:45,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:25:45,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:25:45,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:25:45,112 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:25:45,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:25:45,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:25:45,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:25:45,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:25:45,115 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 20:25:45,137 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:25:45,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:25:45,143 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:25:45,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:25:45,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:25:45,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:25:45,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:25:45,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:25:45,146 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:25:45,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:25:45,147 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:25:45,148 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:25:45,148 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:25:45,149 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:25:45,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:25:45,149 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:25:45,149 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:25:45,150 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:25:45,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:25:45,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:25:45,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:25:45,151 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:25:45,151 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:25:45,554 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:25:45,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:25:45,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:25:45,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:25:45,589 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:25:45,594 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-10-23 20:25:45,680 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac7ac0e7/7f3a02e9bde3481ab189c88f5a2fd83b/FLAGa1951bbd6 [2020-10-23 20:25:46,249 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:25:46,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_2a.c.cil.c [2020-10-23 20:25:46,267 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac7ac0e7/7f3a02e9bde3481ab189c88f5a2fd83b/FLAGa1951bbd6 [2020-10-23 20:25:46,601 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aac7ac0e7/7f3a02e9bde3481ab189c88f5a2fd83b [2020-10-23 20:25:46,604 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:25:46,613 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:25:46,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:46,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:25:46,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:25:46,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:46" (1/1) ... [2020-10-23 20:25:46,631 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aab51f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:46, skipping insertion in model container [2020-10-23 20:25:46,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:25:46" (1/1) ... [2020-10-23 20:25:46,640 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:25:46,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:25:46,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:47,005 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:25:47,077 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:25:47,101 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:25:47,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47 WrapperNode [2020-10-23 20:25:47,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:25:47,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:25:47,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:25:47,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:25:47,115 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,124 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,125 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,137 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,144 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,147 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (1/1) ... [2020-10-23 20:25:47,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:25:47,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:25:47,153 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:25:47,153 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:25:47,154 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (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 20:25:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:25:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:25:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:25:47,239 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 20:25:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2020-10-23 20:25:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure addflt [2020-10-23 20:25:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure mulflt [2020-10-23 20:25:47,240 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:25:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:25:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:25:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:25:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:25:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-23 20:25:47,241 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-23 20:25:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 20:25:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2020-10-23 20:25:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure addflt [2020-10-23 20:25:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure mulflt [2020-10-23 20:25:47,242 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:25:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:25:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:25:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:25:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:25:47,243 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:25:47,244 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:25:48,083 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:25:48,083 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-23 20:25:48,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:48 BoogieIcfgContainer [2020-10-23 20:25:48,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:25:48,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:25:48,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:25:48,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:25:48,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:25:46" (1/3) ... [2020-10-23 20:25:48,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336f24ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:48, skipping insertion in model container [2020-10-23 20:25:48,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:25:47" (2/3) ... [2020-10-23 20:25:48,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336f24ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:25:48, skipping insertion in model container [2020-10-23 20:25:48,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:25:48" (3/3) ... [2020-10-23 20:25:48,094 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-10-23 20:25:48,110 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:25:48,115 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:25:48,128 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:25:48,153 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:25:48,153 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:25:48,153 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:25:48,153 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:25:48,153 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:25:48,153 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:25:48,154 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:25:48,154 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:25:48,173 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states. [2020-10-23 20:25:48,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-23 20:25:48,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:48,191 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:48,192 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:48,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:48,198 INFO L82 PathProgramCache]: Analyzing trace with hash -415784909, now seen corresponding path program 1 times [2020-10-23 20:25:48,207 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:48,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919454129] [2020-10-23 20:25:48,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:48,272 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:48,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:48,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 20:25:48,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:48,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 20:25:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:48,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 20:25:48,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:48,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 20:25:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:48,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-23 20:25:48,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:48,636 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-23 20:25:48,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919454129] [2020-10-23 20:25:48,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:48,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 20:25:48,641 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173013125] [2020-10-23 20:25:48,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 20:25:48,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:48,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 20:25:48,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 20:25:48,665 INFO L87 Difference]: Start difference. First operand 164 states. Second operand 4 states. [2020-10-23 20:25:49,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:49,246 INFO L93 Difference]: Finished difference Result 266 states and 323 transitions. [2020-10-23 20:25:49,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-23 20:25:49,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 109 [2020-10-23 20:25:49,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:49,260 INFO L225 Difference]: With dead ends: 266 [2020-10-23 20:25:49,261 INFO L226 Difference]: Without dead ends: 135 [2020-10-23 20:25:49,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:25:49,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-10-23 20:25:49,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-10-23 20:25:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-23 20:25:49,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 153 transitions. [2020-10-23 20:25:49,345 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 153 transitions. Word has length 109 [2020-10-23 20:25:49,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:49,348 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 153 transitions. [2020-10-23 20:25:49,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 20:25:49,348 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 153 transitions. [2020-10-23 20:25:49,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-23 20:25:49,352 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:49,352 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:49,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:25:49,353 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:49,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:49,354 INFO L82 PathProgramCache]: Analyzing trace with hash -2075471796, now seen corresponding path program 1 times [2020-10-23 20:25:49,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:49,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103514339] [2020-10-23 20:25:49,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:49,360 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:49,714 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-10-23 20:25:49,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:49,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:49,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 20:25:49,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:49,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 20:25:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:49,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 20:25:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:49,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 20:25:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-23 20:25:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-10-23 20:25:49,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103514339] [2020-10-23 20:25:49,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:49,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:25:49,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821471589] [2020-10-23 20:25:49,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:25:49,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:49,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:25:49,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:25:49,826 INFO L87 Difference]: Start difference. First operand 135 states and 153 transitions. Second operand 5 states. [2020-10-23 20:25:50,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:50,353 INFO L93 Difference]: Finished difference Result 152 states and 172 transitions. [2020-10-23 20:25:50,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:25:50,354 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-23 20:25:50,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:50,357 INFO L225 Difference]: With dead ends: 152 [2020-10-23 20:25:50,357 INFO L226 Difference]: Without dead ends: 134 [2020-10-23 20:25:50,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:25:50,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-23 20:25:50,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-23 20:25:50,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-23 20:25:50,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 151 transitions. [2020-10-23 20:25:50,388 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 151 transitions. Word has length 111 [2020-10-23 20:25:50,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:50,389 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 151 transitions. [2020-10-23 20:25:50,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:25:50,389 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 151 transitions. [2020-10-23 20:25:50,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-23 20:25:50,391 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:50,391 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:50,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:25:50,392 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:50,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:50,392 INFO L82 PathProgramCache]: Analyzing trace with hash 37781676, now seen corresponding path program 1 times [2020-10-23 20:25:50,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:50,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484521386] [2020-10-23 20:25:50,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:50,397 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:25:50,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:50,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:25:50,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:50,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-23 20:25:50,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:50,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-23 20:25:50,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:50,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-23 20:25:50,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:50,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-23 20:25:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:50,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-23 20:25:50,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:25:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-23 20:25:50,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484521386] [2020-10-23 20:25:50,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:25:50,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:25:50,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864961795] [2020-10-23 20:25:50,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:25:50,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:25:50,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:25:50,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:25:50,558 INFO L87 Difference]: Start difference. First operand 134 states and 151 transitions. Second operand 5 states. [2020-10-23 20:25:51,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:25:51,212 INFO L93 Difference]: Finished difference Result 273 states and 320 transitions. [2020-10-23 20:25:51,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:25:51,213 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 111 [2020-10-23 20:25:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:25:51,217 INFO L225 Difference]: With dead ends: 273 [2020-10-23 20:25:51,218 INFO L226 Difference]: Without dead ends: 175 [2020-10-23 20:25:51,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-23 20:25:51,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-23 20:25:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 152. [2020-10-23 20:25:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-23 20:25:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2020-10-23 20:25:51,259 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 111 [2020-10-23 20:25:51,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:25:51,260 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2020-10-23 20:25:51,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:25:51,260 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2020-10-23 20:25:51,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-23 20:25:51,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:25:51,263 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:25:51,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:25:51,263 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:25:51,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:25:51,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1061811624, now seen corresponding path program 1 times [2020-10-23 20:25:51,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:25:51,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147185377] [2020-10-23 20:25:51,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:25:51,267 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:25:51,276 INFO L168 Benchmark]: Toolchain (without parser) took 4668.11 ms. Allocated memory was 163.6 MB in the beginning and 205.5 MB in the end (delta: 41.9 MB). Free memory was 139.5 MB in the beginning and 159.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 22.5 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:51,277 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 163.6 MB. Free memory was 137.9 MB in the beginning and 137.7 MB in the end (delta: 130.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:51,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.24 ms. Allocated memory is still 163.6 MB. Free memory was 138.9 MB in the beginning and 126.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:51,279 INFO L168 Benchmark]: Boogie Preprocessor took 49.12 ms. Allocated memory is still 163.6 MB. Free memory was 126.6 MB in the beginning and 124.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:51,280 INFO L168 Benchmark]: RCFGBuilder took 933.18 ms. Allocated memory is still 163.6 MB. Free memory was 124.6 MB in the beginning and 139.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:51,281 INFO L168 Benchmark]: TraceAbstraction took 3186.66 ms. Allocated memory was 163.6 MB in the beginning and 205.5 MB in the end (delta: 41.9 MB). Free memory was 139.2 MB in the beginning and 159.2 MB in the end (delta: -20.0 MB). Peak memory consumption was 21.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:25:51,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 163.6 MB. Free memory was 137.9 MB in the beginning and 137.7 MB in the end (delta: 130.4 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 481.24 ms. Allocated memory is still 163.6 MB. Free memory was 138.9 MB in the beginning and 126.6 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 49.12 ms. Allocated memory is still 163.6 MB. Free memory was 126.6 MB in the beginning and 124.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 933.18 ms. Allocated memory is still 163.6 MB. Free memory was 124.6 MB in the beginning and 139.7 MB in the end (delta: -15.2 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3186.66 ms. Allocated memory was 163.6 MB in the beginning and 205.5 MB in the end (delta: 41.9 MB). Free memory was 139.2 MB in the beginning and 159.2 MB in the end (delta: -20.0 MB). Peak memory consumption was 21.4 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.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...