/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/nec20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:16:41,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:16:41,215 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:16:41,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 00:16:41,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 00:16:41,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 00:16:41,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 00:16:41,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 00:16:41,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 00:16:41,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 00:16:41,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 00:16:41,290 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 00:16:41,291 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:16:41,292 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:16:41,294 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:16:41,295 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:16:41,297 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:16:41,298 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:16:41,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:16:41,303 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:16:41,305 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:16:41,310 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:16:41,311 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:16:41,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:16:41,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 00:16:41,317 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 00:16:41,317 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 00:16:41,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 00:16:41,319 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 00:16:41,320 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 00:16:41,321 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 00:16:41,322 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 00:16:41,323 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 00:16:41,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 00:16:41,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 00:16:41,326 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 00:16:41,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 00:16:41,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 00:16:41,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:16:41,330 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:16:41,331 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:16:41,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:16:41,351 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:16:41,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:16:41,357 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:16:41,357 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:16:41,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:16:41,358 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:16:41,358 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:16:41,358 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:16:41,358 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:16:41,358 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:16:41,359 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:16:41,359 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:16:41,359 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:16:41,359 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:16:41,360 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:16:41,360 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:16:41,360 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:16:41,360 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:16:41,361 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:41,361 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:16:41,361 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:16:41,361 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:16:41,362 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:16:41,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:16:41,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:16:41,796 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:16:41,798 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:16:41,799 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:16:41,800 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec20.c [2021-02-24 00:16:41,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c8b832b9/27dcb37d3417405cabfe7d2349df4d9a/FLAGad456dd42 [2021-02-24 00:16:42,578 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:16:42,580 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20.c [2021-02-24 00:16:42,588 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c8b832b9/27dcb37d3417405cabfe7d2349df4d9a/FLAGad456dd42 [2021-02-24 00:16:42,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c8b832b9/27dcb37d3417405cabfe7d2349df4d9a [2021-02-24 00:16:42,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:16:42,935 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:16:42,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:42,938 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:16:42,942 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:16:42,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:42" (1/1) ... [2021-02-24 00:16:42,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1107d7ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:42, skipping insertion in model container [2021-02-24 00:16:42,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:42" (1/1) ... [2021-02-24 00:16:42,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:16:42,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:16:43,120 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20.c[356,369] [2021-02-24 00:16:43,143 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:43,153 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:16:43,166 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20.c[356,369] [2021-02-24 00:16:43,173 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:43,191 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:16:43,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:43 WrapperNode [2021-02-24 00:16:43,191 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:43,193 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:16:43,193 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:16:43,193 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:16:43,206 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:43" (1/1) ... [2021-02-24 00:16:43,207 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:43" (1/1) ... [2021-02-24 00:16:43,214 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:43" (1/1) ... [2021-02-24 00:16:43,215 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:43" (1/1) ... [2021-02-24 00:16:43,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:43" (1/1) ... [2021-02-24 00:16:43,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:43" (1/1) ... [2021-02-24 00:16:43,228 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:43" (1/1) ... [2021-02-24 00:16:43,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:16:43,232 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:16:43,232 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:16:43,232 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:16:43,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:16:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:16:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:16:43,329 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:16:43,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:16:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:16:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:16:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:16:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:16:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-24 00:16:43,330 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:16:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-24 00:16:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:16:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:16:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:16:43,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:16:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:16:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:16:43,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:16:43,616 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:16:43,617 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:16:43,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:43 BoogieIcfgContainer [2021-02-24 00:16:43,619 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:16:43,621 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:16:43,621 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:16:43,626 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:16:43,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:16:42" (1/3) ... [2021-02-24 00:16:43,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d8bb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:43, skipping insertion in model container [2021-02-24 00:16:43,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:43" (2/3) ... [2021-02-24 00:16:43,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d8bb52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:43, skipping insertion in model container [2021-02-24 00:16:43,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:43" (3/3) ... [2021-02-24 00:16:43,669 INFO L111 eAbstractionObserver]: Analyzing ICFG nec20.c [2021-02-24 00:16:43,677 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:16:43,683 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:16:43,704 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:16:43,731 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:16:43,732 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:16:43,732 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:16:43,732 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:16:43,732 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:16:43,732 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:16:43,733 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:16:43,733 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:16:43,750 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-24 00:16:43,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 00:16:43,761 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:43,762 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] [2021-02-24 00:16:43,763 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:43,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:43,769 INFO L82 PathProgramCache]: Analyzing trace with hash 2129882840, now seen corresponding path program 1 times [2021-02-24 00:16:43,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:43,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741541165] [2021-02-24 00:16:43,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:43,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:44,049 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:44,051 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:44,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:44,053 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:44,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:44,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:44,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:44,152 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:44,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:44,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [741541165] [2021-02-24 00:16:44,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:44,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:16:44,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196947780] [2021-02-24 00:16:44,193 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:16:44,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:44,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:16:44,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:44,222 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2021-02-24 00:16:44,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:44,424 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2021-02-24 00:16:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:16:44,426 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2021-02-24 00:16:44,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:44,436 INFO L225 Difference]: With dead ends: 69 [2021-02-24 00:16:44,437 INFO L226 Difference]: Without dead ends: 37 [2021-02-24 00:16:44,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:44,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-24 00:16:44,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-02-24 00:16:44,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-02-24 00:16:44,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-02-24 00:16:44,502 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 31 [2021-02-24 00:16:44,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:44,503 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-02-24 00:16:44,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:16:44,504 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-02-24 00:16:44,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 00:16:44,505 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:44,505 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] [2021-02-24 00:16:44,506 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:16:44,506 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:44,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:44,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1900849632, now seen corresponding path program 1 times [2021-02-24 00:16:44,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:44,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1731973726] [2021-02-24 00:16:44,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:44,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:44,627 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:44,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:44,628 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:44,629 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:16:44,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:44,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:16:44,658 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-24 00:16:44,660 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-24 00:16:44,661 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:44,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:44,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:44,749 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:44,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:44,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1731973726] [2021-02-24 00:16:44,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:44,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:16:44,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828516329] [2021-02-24 00:16:44,763 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:16:44,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:44,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:16:44,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:16:44,765 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 5 states. [2021-02-24 00:16:44,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:44,980 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-02-24 00:16:44,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:16:44,980 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2021-02-24 00:16:44,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:44,984 INFO L225 Difference]: With dead ends: 57 [2021-02-24 00:16:44,984 INFO L226 Difference]: Without dead ends: 51 [2021-02-24 00:16:44,986 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:16:44,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-24 00:16:45,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2021-02-24 00:16:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-24 00:16:45,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-02-24 00:16:45,007 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 31 [2021-02-24 00:16:45,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:45,008 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-02-24 00:16:45,008 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:16:45,008 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-02-24 00:16:45,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 00:16:45,010 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:45,012 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] [2021-02-24 00:16:45,013 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:16:45,013 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:45,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:45,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1192211008, now seen corresponding path program 1 times [2021-02-24 00:16:45,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:45,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091791294] [2021-02-24 00:16:45,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:45,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:45,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:45,167 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:45,168 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:16:45,204 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size [2021-02-24 00:16:45,207 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-02-24 00:16:45,254 WARN L141 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size [2021-02-24 00:16:45,258 WARN L147 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size 38 [2021-02-24 00:16:45,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:45,262 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:45,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:45,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:45,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:45,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091791294] [2021-02-24 00:16:45,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:45,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:16:45,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960813528] [2021-02-24 00:16:45,341 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:16:45,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:45,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:16:45,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:16:45,342 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 5 states. [2021-02-24 00:16:45,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:45,574 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-02-24 00:16:45,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 00:16:45,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2021-02-24 00:16:45,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:45,576 INFO L225 Difference]: With dead ends: 58 [2021-02-24 00:16:45,577 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 00:16:45,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-24 00:16:45,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 00:16:45,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2021-02-24 00:16:45,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-24 00:16:45,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-24 00:16:45,594 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 31 [2021-02-24 00:16:45,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:45,594 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-24 00:16:45,594 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:16:45,595 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-24 00:16:45,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 00:16:45,596 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:45,596 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] [2021-02-24 00:16:45,596 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:16:45,597 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:45,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:45,597 INFO L82 PathProgramCache]: Analyzing trace with hash -2094669374, now seen corresponding path program 1 times [2021-02-24 00:16:45,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:45,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118604640] [2021-02-24 00:16:45,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:45,627 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:45,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:45,658 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:45,691 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 00:16:45,691 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:16:45,692 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 00:16:45,744 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:16:45 BoogieIcfgContainer [2021-02-24 00:16:45,744 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:16:45,746 INFO L168 Benchmark]: Toolchain (without parser) took 2822.24 ms. Allocated memory was 152.0 MB in the beginning and 213.9 MB in the end (delta: 61.9 MB). Free memory was 128.2 MB in the beginning and 138.5 MB in the end (delta: -10.2 MB). Peak memory consumption was 52.9 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:45,747 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:45,748 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.63 ms. Allocated memory is still 152.0 MB. Free memory was 127.2 MB in the beginning and 117.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:45,749 INFO L168 Benchmark]: Boogie Preprocessor took 38.18 ms. Allocated memory is still 152.0 MB. Free memory was 117.7 MB in the beginning and 116.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:45,749 INFO L168 Benchmark]: RCFGBuilder took 387.75 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 100.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:45,751 INFO L168 Benchmark]: TraceAbstraction took 2123.63 ms. Allocated memory was 152.0 MB in the beginning and 213.9 MB in the end (delta: 61.9 MB). Free memory was 99.7 MB in the beginning and 138.5 MB in the end (delta: -38.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:45,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 152.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 254.63 ms. Allocated memory is still 152.0 MB. Free memory was 127.2 MB in the beginning and 117.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.18 ms. Allocated memory is still 152.0 MB. Free memory was 117.7 MB in the beginning and 116.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 387.75 ms. Allocated memory is still 152.0 MB. Free memory was 116.2 MB in the beginning and 100.2 MB in the end (delta: 16.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2123.63 ms. Allocated memory was 152.0 MB in the beginning and 213.9 MB in the end (delta: 61.9 MB). Free memory was 99.7 MB in the beginning and 138.5 MB in the end (delta: -38.8 MB). Peak memory consumption was 24.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L12] int b; VAL [\old(b)=261, b=0] [L15] _Bool k=__VERIFIER_nondet_bool(); VAL [__VERIFIER_nondet_bool()=257, b=0, k=1] [L16] unsigned int i,n,j; VAL [b=0, k=1] [L17] int a[1025]; VAL [b=0, k=1] [L19] COND TRUE \read(k) VAL [b=0, k=1] [L20] n=0 VAL [b=0, k=1, n=0] [L25] i=0 VAL [b=0, i=0, k=1, n=0] [L26] j=__VERIFIER_nondet_uint() VAL [__VERIFIER_nondet_uint()=-4294966273, b=0, i=0, j=-4294966273, k=1, n=0] [L27] COND FALSE !(j > 10000) VAL [b=0, i=0, j=-4294966273, k=1, n=0] [L30] COND TRUE i <= n VAL [b=0, i=0, j=-4294966273, k=1, n=0] [L31] i++ VAL [b=0, i=1, j=-4294966273, k=1, n=0] [L32] j= j +2 VAL [b=0, i=1, j=-4294966271, k=1, n=0] [L30] COND FALSE !(i <= n) VAL [b=0, i=1, j=-4294966271, k=1, n=0] [L35] a[i]=0 VAL [b=0, i=1, j=-4294966271, k=1, n=0] [L36] CALL __VERIFIER_assert(j<1025) VAL [\old(cond)=0, b=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, b=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, b=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 132 SDtfs, 125 SDslu, 55 SDs, 0 SdLazy, 122 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 129 NumberOfCodeBlocks, 129 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 90 ConstructedInterpolants, 0 QuantifiedInterpolants, 8430 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...