/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/array-fpi/condaf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:46:42,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:46:42,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:46:42,208 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:46:42,209 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:46:42,211 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:46:42,212 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:46:42,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:46:42,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:46:42,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:46:42,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:46:42,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:46:42,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:46:42,222 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:46:42,223 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:46:42,224 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:46:42,225 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:46:42,227 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:46:42,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:46:42,242 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:46:42,243 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:46:42,246 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:46:42,247 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:46:42,248 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:46:42,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:46:42,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:46:42,252 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:46:42,253 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:46:42,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:46:42,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:46:42,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:46:42,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:46:42,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:46:42,258 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:46:42,259 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:46:42,259 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:46:42,260 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:46:42,260 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:46:42,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:46:42,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:46:42,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:46:42,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:46:42,275 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:46:42,275 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:46:42,277 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:46:42,277 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:46:42,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:46:42,278 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:46:42,278 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:46:42,278 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:46:42,278 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:46:42,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:46:42,279 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:46:42,279 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:46:42,279 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:46:42,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:46:42,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:46:42,280 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:46:42,280 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:46:42,280 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:46:42,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:46:42,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:46:42,281 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:46:42,281 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:46:42,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:46:42,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:46:42,660 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:46:42,664 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:46:42,665 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:46:42,666 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:46:42,667 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condaf.c [2021-02-23 18:46:42,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a878f1dd1/99500f7c52a8477dbacbf70cdeaf1424/FLAGccecd3f94 [2021-02-23 18:46:43,379 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:46:43,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condaf.c [2021-02-23 18:46:43,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a878f1dd1/99500f7c52a8477dbacbf70cdeaf1424/FLAGccecd3f94 [2021-02-23 18:46:43,758 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a878f1dd1/99500f7c52a8477dbacbf70cdeaf1424 [2021-02-23 18:46:43,761 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:46:43,774 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:46:43,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:43,776 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:46:43,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:46:43,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:43" (1/1) ... [2021-02-23 18:46:43,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6385e8f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:43, skipping insertion in model container [2021-02-23 18:46:43,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:43" (1/1) ... [2021-02-23 18:46:43,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:46:43,806 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:46:43,942 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condaf.c[589,602] [2021-02-23 18:46:43,965 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:43,974 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:46:43,988 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condaf.c[589,602] [2021-02-23 18:46:43,999 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:44,019 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:46:44,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:44 WrapperNode [2021-02-23 18:46:44,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:44,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:46:44,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:46:44,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:46:44,036 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:44" (1/1) ... [2021-02-23 18:46:44,037 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:44" (1/1) ... [2021-02-23 18:46:44,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:44" (1/1) ... [2021-02-23 18:46:44,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:44" (1/1) ... [2021-02-23 18:46:44,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:44" (1/1) ... [2021-02-23 18:46:44,089 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:44" (1/1) ... [2021-02-23 18:46:44,096 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:44" (1/1) ... [2021-02-23 18:46:44,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:46:44,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:46:44,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:46:44,103 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:46:44,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:44" (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 [2021-02-23 18:46:44,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:46:44,234 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:46:44,234 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:46:44,234 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:46:44,235 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:46:44,235 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:46:44,235 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:46:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:46:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:46:44,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:46:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:46:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:46:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:46:44,237 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:46:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:46:44,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:46:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:46:44,239 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:46:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:46:44,240 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:46:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:46:44,243 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:46:44,783 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:46:44,783 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:46:44,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:44 BoogieIcfgContainer [2021-02-23 18:46:44,785 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:46:44,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:46:44,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:46:44,793 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:46:44,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:46:43" (1/3) ... [2021-02-23 18:46:44,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d33a19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:44, skipping insertion in model container [2021-02-23 18:46:44,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:44" (2/3) ... [2021-02-23 18:46:44,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d33a19b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:44, skipping insertion in model container [2021-02-23 18:46:44,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:44" (3/3) ... [2021-02-23 18:46:44,797 INFO L111 eAbstractionObserver]: Analyzing ICFG condaf.c [2021-02-23 18:46:44,804 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:46:44,811 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:46:44,856 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:46:44,899 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:46:44,899 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:46:44,899 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:46:44,899 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:46:44,899 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:46:44,900 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:46:44,900 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:46:44,900 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:46:44,922 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2021-02-23 18:46:44,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:46:44,939 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:44,940 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] [2021-02-23 18:46:44,940 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:44,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:44,949 INFO L82 PathProgramCache]: Analyzing trace with hash -276473570, now seen corresponding path program 1 times [2021-02-23 18:46:44,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:44,960 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140595901] [2021-02-23 18:46:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:45,059 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:45,265 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,267 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:45,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:45,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:45,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:45,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:45,363 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,364 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:45,373 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140595901] [2021-02-23 18:46:45,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:45,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:46:45,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717539851] [2021-02-23 18:46:45,381 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:46:45,381 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:45,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:46:45,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:45,399 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2021-02-23 18:46:45,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:45,680 INFO L93 Difference]: Finished difference Result 131 states and 148 transitions. [2021-02-23 18:46:45,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:46:45,682 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-23 18:46:45,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:45,691 INFO L225 Difference]: With dead ends: 131 [2021-02-23 18:46:45,692 INFO L226 Difference]: Without dead ends: 64 [2021-02-23 18:46:45,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:45,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-23 18:46:45,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-23 18:46:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-23 18:46:45,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 67 transitions. [2021-02-23 18:46:45,744 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 67 transitions. Word has length 38 [2021-02-23 18:46:45,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:45,744 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 67 transitions. [2021-02-23 18:46:45,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:46:45,745 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 67 transitions. [2021-02-23 18:46:45,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:46:45,746 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:45,747 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] [2021-02-23 18:46:45,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:46:45,747 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:45,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:45,748 INFO L82 PathProgramCache]: Analyzing trace with hash 1119969012, now seen corresponding path program 1 times [2021-02-23 18:46:45,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:45,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567262337] [2021-02-23 18:46:45,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:45,751 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:45,829 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,831 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:45,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,835 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:46:45,856 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:45,875 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,876 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:45,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:45,963 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,964 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:45,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:45,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:45,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:45,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567262337] [2021-02-23 18:46:45,978 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:45,978 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:46:45,978 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76216660] [2021-02-23 18:46:45,979 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:46:45,980 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:45,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:46:45,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:46:45,981 INFO L87 Difference]: Start difference. First operand 64 states and 67 transitions. Second operand 5 states. [2021-02-23 18:46:46,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:46,217 INFO L93 Difference]: Finished difference Result 120 states and 129 transitions. [2021-02-23 18:46:46,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:46:46,218 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-23 18:46:46,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:46,220 INFO L225 Difference]: With dead ends: 120 [2021-02-23 18:46:46,220 INFO L226 Difference]: Without dead ends: 89 [2021-02-23 18:46:46,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:46:46,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-02-23 18:46:46,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2021-02-23 18:46:46,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-23 18:46:46,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-23 18:46:46,252 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 38 [2021-02-23 18:46:46,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:46,253 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-23 18:46:46,253 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:46:46,253 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-23 18:46:46,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 18:46:46,255 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:46,256 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] [2021-02-23 18:46:46,256 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:46:46,256 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:46,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1778519661, now seen corresponding path program 1 times [2021-02-23 18:46:46,257 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:46,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1425801792] [2021-02-23 18:46:46,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:46,283 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:46,285 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:46,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:46,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:46,450 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,451 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:46:46,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:46:46,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 18:46:46,483 WARN L141 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size [2021-02-23 18:46:46,484 WARN L147 QuantifierPusher]: treesize reduction 4, result has 77.8 percent of original size 14 [2021-02-23 18:46:46,503 WARN L141 QuantifierPusher]: treesize reduction 28, result has 56.3 percent of original size [2021-02-23 18:46:46,505 WARN L147 QuantifierPusher]: treesize reduction 28, result has 56.3 percent of original size 36 [2021-02-23 18:46:46,540 WARN L141 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size [2021-02-23 18:46:46,542 WARN L147 QuantifierPusher]: treesize reduction 9, result has 72.7 percent of original size 24 [2021-02-23 18:46:46,568 WARN L141 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size [2021-02-23 18:46:46,569 WARN L147 QuantifierPusher]: treesize reduction 9, result has 71.0 percent of original size 22 [2021-02-23 18:46:46,594 WARN L141 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size [2021-02-23 18:46:46,595 WARN L147 QuantifierPusher]: treesize reduction 9, result has 62.5 percent of original size 15 [2021-02-23 18:46:46,616 WARN L141 QuantifierPusher]: treesize reduction 32, result has 49.2 percent of original size [2021-02-23 18:46:46,617 WARN L147 QuantifierPusher]: treesize reduction 32, result has 49.2 percent of original size 31 [2021-02-23 18:46:46,651 WARN L141 QuantifierPusher]: treesize reduction 32, result has 41.8 percent of original size [2021-02-23 18:46:46,652 WARN L147 QuantifierPusher]: treesize reduction 32, result has 41.8 percent of original size 23 [2021-02-23 18:46:46,684 WARN L141 QuantifierPusher]: treesize reduction 25, result has 41.9 percent of original size [2021-02-23 18:46:46,685 WARN L147 QuantifierPusher]: treesize reduction 25, result has 41.9 percent of original size 18 [2021-02-23 18:46:46,688 WARN L141 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size [2021-02-23 18:46:46,688 WARN L147 QuantifierPusher]: treesize reduction 15, result has 6.3 percent of original size 1 [2021-02-23 18:46:46,689 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:46,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:46,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:46,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:46,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:46,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:46,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:46,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:46,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1425801792] [2021-02-23 18:46:46,755 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:46,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-23 18:46:46,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813940222] [2021-02-23 18:46:46,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-23 18:46:46,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:46,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-23 18:46:46,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-02-23 18:46:46,758 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 12 states. [2021-02-23 18:46:47,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:47,215 INFO L93 Difference]: Finished difference Result 132 states and 140 transitions. [2021-02-23 18:46:47,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-02-23 18:46:47,215 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 62 [2021-02-23 18:46:47,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:47,217 INFO L225 Difference]: With dead ends: 132 [2021-02-23 18:46:47,217 INFO L226 Difference]: Without dead ends: 101 [2021-02-23 18:46:47,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=131, Invalid=289, Unknown=0, NotChecked=0, Total=420 [2021-02-23 18:46:47,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-02-23 18:46:47,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 76. [2021-02-23 18:46:47,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-23 18:46:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-02-23 18:46:47,235 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 62 [2021-02-23 18:46:47,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:47,235 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-02-23 18:46:47,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-23 18:46:47,235 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-02-23 18:46:47,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-02-23 18:46:47,237 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:47,238 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] [2021-02-23 18:46:47,238 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:46:47,238 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:47,239 INFO L82 PathProgramCache]: Analyzing trace with hash -955592423, now seen corresponding path program 1 times [2021-02-23 18:46:47,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:47,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755202375] [2021-02-23 18:46:47,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:47,244 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:46:47,246 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:46:47,277 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:46:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:46:47,305 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:46:47,341 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:46:47,342 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:46:47,342 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:46:47,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:46:47 BoogieIcfgContainer [2021-02-23 18:46:47,361 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:46:47,362 INFO L168 Benchmark]: Toolchain (without parser) took 3599.13 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 135.1 MB in the beginning and 150.8 MB in the end (delta: -15.7 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:47,363 INFO L168 Benchmark]: CDTParser took 1.00 ms. Allocated memory is still 158.3 MB. Free memory was 131.9 MB in the beginning and 131.7 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:46:47,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.80 ms. Allocated memory is still 158.3 MB. Free memory was 133.8 MB in the beginning and 123.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:47,365 INFO L168 Benchmark]: Boogie Preprocessor took 79.63 ms. Allocated memory is still 158.3 MB. Free memory was 123.9 MB in the beginning and 122.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:47,366 INFO L168 Benchmark]: RCFGBuilder took 683.47 ms. Allocated memory is still 158.3 MB. Free memory was 122.0 MB in the beginning and 101.7 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:47,366 INFO L168 Benchmark]: TraceAbstraction took 2571.26 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 101.1 MB in the beginning and 150.8 MB in the end (delta: -49.7 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:46:47,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.00 ms. Allocated memory is still 158.3 MB. Free memory was 131.9 MB in the beginning and 131.7 MB in the end (delta: 215.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.80 ms. Allocated memory is still 158.3 MB. Free memory was 133.8 MB in the beginning and 123.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.63 ms. Allocated memory is still 158.3 MB. Free memory was 123.9 MB in the beginning and 122.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 683.47 ms. Allocated memory is still 158.3 MB. Free memory was 122.0 MB in the beginning and 101.7 MB in the end (delta: 20.4 MB). Peak memory consumption was 19.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2571.26 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 101.1 MB in the beginning and 150.8 MB in the end (delta: -49.7 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i