/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/nec20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 06:45:12,312 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 06:45:12,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 06:45:12,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 06:45:12,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 06:45:12,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 06:45:12,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 06:45:12,346 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 06:45:12,347 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 06:45:12,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 06:45:12,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 06:45:12,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 06:45:12,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 06:45:12,350 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 06:45:12,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 06:45:12,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 06:45:12,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 06:45:12,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 06:45:12,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 06:45:12,354 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 06:45:12,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 06:45:12,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 06:45:12,356 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 06:45:12,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 06:45:12,358 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 06:45:12,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-04-16 06:45:12,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-04-16 06:45:12,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-04-16 06:45:12,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-04-16 06:45:12,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-04-16 06:45:12,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-04-16 06:45:12,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-04-16 06:45:12,363 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-04-16 06:45:12,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 06:45:12,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 06:45:12,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 06:45:12,365 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 06:45:12,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 06:45:12,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 06:45:12,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 06:45:12,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 06:45:12,373 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 06:45:12,374 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 06:45:12,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 06:45:12,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 06:45:12,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 06:45:12,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 06:45:12,374 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 06:45:12,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 06:45:12,374 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 06:45:12,374 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 06:45:12,374 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 06:45:12,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 06:45:12,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 06:45:12,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 06:45:12,375 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:45:12,375 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 06:45:12,375 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 06:45:12,375 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 06:45:12,375 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 06:45:12,375 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 06:45:12,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 06:45:12,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 06:45:12,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 06:45:12,630 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 06:45:12,639 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 06:45:12,640 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec20.c [2021-04-16 06:45:12,736 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f29bcf22/4d5401a188924062820872a771402670/FLAG12733f818 [2021-04-16 06:45:13,112 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 06:45:13,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20.c [2021-04-16 06:45:13,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f29bcf22/4d5401a188924062820872a771402670/FLAG12733f818 [2021-04-16 06:45:13,141 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f29bcf22/4d5401a188924062820872a771402670 [2021-04-16 06:45:13,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 06:45:13,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 06:45:13,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 06:45:13,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 06:45:13,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 06:45:13,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:45:13" (1/1) ... [2021-04-16 06:45:13,153 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15cf5057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:13, skipping insertion in model container [2021-04-16 06:45:13,153 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:45:13" (1/1) ... [2021-04-16 06:45:13,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 06:45:13,173 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 06:45:13,263 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] [2021-04-16 06:45:13,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:45:13,285 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 06:45:13,293 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] [2021-04-16 06:45:13,306 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:45:13,317 INFO L208 MainTranslator]: Completed translation [2021-04-16 06:45:13,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:13 WrapperNode [2021-04-16 06:45:13,317 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 06:45:13,318 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 06:45:13,318 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 06:45:13,318 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 06:45:13,325 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:13" (1/1) ... [2021-04-16 06:45:13,325 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:13" (1/1) ... [2021-04-16 06:45:13,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:13" (1/1) ... [2021-04-16 06:45:13,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:13" (1/1) ... [2021-04-16 06:45:13,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:13" (1/1) ... [2021-04-16 06:45:13,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:13" (1/1) ... [2021-04-16 06:45:13,379 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:13" (1/1) ... [2021-04-16 06:45:13,380 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 06:45:13,381 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 06:45:13,381 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 06:45:13,381 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 06:45:13,382 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:13" (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 [2021-04-16 06:45:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 06:45:13,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 06:45:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 06:45:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 06:45:13,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 06:45:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 06:45:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 06:45:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 06:45:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 06:45:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-04-16 06:45:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 06:45:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-04-16 06:45:13,510 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 06:45:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 06:45:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 06:45:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 06:45:13,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 06:45:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 06:45:13,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 06:45:13,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 06:45:13,758 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 06:45:13,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:45:13 BoogieIcfgContainer [2021-04-16 06:45:13,759 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 06:45:13,760 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 06:45:13,760 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 06:45:13,762 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 06:45:13,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 06:45:13" (1/3) ... [2021-04-16 06:45:13,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44afc8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:45:13, skipping insertion in model container [2021-04-16 06:45:13,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:45:13" (2/3) ... [2021-04-16 06:45:13,763 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44afc8c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:45:13, skipping insertion in model container [2021-04-16 06:45:13,763 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:45:13" (3/3) ... [2021-04-16 06:45:13,764 INFO L111 eAbstractionObserver]: Analyzing ICFG nec20.c [2021-04-16 06:45:13,784 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 06:45:13,788 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 06:45:13,799 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 06:45:13,813 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 06:45:13,813 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 06:45:13,813 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 06:45:13,813 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 06:45:13,813 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 06:45:13,813 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 06:45:13,813 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 06:45:13,814 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 06:45:13,823 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:45:13,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-16 06:45:13,829 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:13,829 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:13,830 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:13,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:13,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1512797340, now seen corresponding path program 1 times [2021-04-16 06:45:13,842 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:13,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [730314905] [2021-04-16 06:45:13,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:13,889 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:13,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:14,025 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,026 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:14,027 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,028 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:45:14,042 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,043 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:14,065 INFO L142 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-04-16 06:45:14,066 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:14,068 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,068 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:14,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:14,136 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,137 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:14,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:14,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [730314905] [2021-04-16 06:45:14,143 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:14,143 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:45:14,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758777665] [2021-04-16 06:45:14,155 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:45:14,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:14,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:45:14,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:45:14,169 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:14,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:14,385 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2021-04-16 06:45:14,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:45:14,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-04-16 06:45:14,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:14,392 INFO L225 Difference]: With dead ends: 53 [2021-04-16 06:45:14,392 INFO L226 Difference]: Without dead ends: 22 [2021-04-16 06:45:14,394 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 164.1ms TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:45:14,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-04-16 06:45:14,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2021-04-16 06:45:14,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:14,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-04-16 06:45:14,421 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 15 [2021-04-16 06:45:14,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:14,421 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-04-16 06:45:14,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:14,421 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-04-16 06:45:14,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-04-16 06:45:14,422 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:14,422 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:14,422 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 06:45:14,422 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:14,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:14,423 INFO L82 PathProgramCache]: Analyzing trace with hash -2102111586, now seen corresponding path program 1 times [2021-04-16 06:45:14,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:14,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522255066] [2021-04-16 06:45:14,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:14,425 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:45:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:14,459 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,460 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:14,461 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,462 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:14,471 INFO L142 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size [2021-04-16 06:45:14,473 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 48 [2021-04-16 06:45:14,518 INFO L142 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size [2021-04-16 06:45:14,520 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-04-16 06:45:14,522 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,522 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:14,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:45:14,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:45:14,567 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,568 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:45:14,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:45:14,568 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522255066] [2021-04-16 06:45:14,568 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:45:14,569 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-04-16 06:45:14,569 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34625451] [2021-04-16 06:45:14,569 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-04-16 06:45:14,569 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:45:14,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-04-16 06:45:14,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-04-16 06:45:14,570 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:14,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:45:14,706 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2021-04-16 06:45:14,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-04-16 06:45:14,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2021-04-16 06:45:14,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:45:14,708 INFO L225 Difference]: With dead ends: 29 [2021-04-16 06:45:14,708 INFO L226 Difference]: Without dead ends: 23 [2021-04-16 06:45:14,709 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 148.1ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-04-16 06:45:14,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-04-16 06:45:14,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2021-04-16 06:45:14,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:14,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-04-16 06:45:14,713 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 15 [2021-04-16 06:45:14,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:45:14,713 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-04-16 06:45:14,713 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:45:14,714 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-04-16 06:45:14,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-04-16 06:45:14,714 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:45:14,714 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:45:14,714 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 06:45:14,714 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:45:14,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:45:14,715 INFO L82 PathProgramCache]: Analyzing trace with hash 1230699476, now seen corresponding path program 1 times [2021-04-16 06:45:14,715 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:45:14,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974950158] [2021-04-16 06:45:14,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:45:14,751 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,759 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-04-16 06:45:14,759 INFO L175 rdanLoopAcceleration]: Guard: Formula: (<= (mod v_main_~i~0_8 4294967296) (mod v_main_~n~0_6 4294967296)) InVars {main_~i~0=v_main_~i~0_8, main_~n~0=v_main_~n~0_6} OutVars{main_~i~0=v_main_~i~0_8, main_~n~0=v_main_~n~0_6} AuxVars[] AssignedVars[] [2021-04-16 06:45:14,767 WARN L240 tifierPushTermWalker]: treesize reduction 10, result has 88.0 percent of original size [2021-04-16 06:45:14,772 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,775 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,777 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,780 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,784 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,785 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,803 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,811 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 06:45:14,820 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-04-16 06:45:14,824 INFO L108 tifierPushTermWalker]: treesize reduction 14, result has 6.7 percent of original size [2021-04-16 06:45:14,826 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-04-16 06:45:14,832 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,836 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,839 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,843 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,849 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,850 WARN L245 tifierPushTermWalker]: treesize reduction 10, result has 88.0 percent of original size 73 [2021-04-16 06:45:14,880 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:45:14,885 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 06:45:14,886 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 06:45:14,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 06:45:14,938 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 06:45:14,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-04-16 06:45:14,995 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-04-16 06:45:15,018 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-04-16 06:45:15,019 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-04-16 06:45:15,019 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-04-16 06:45:15,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 06:45:15 BoogieIcfgContainer [2021-04-16 06:45:15,035 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 06:45:15,036 INFO L168 Benchmark]: Toolchain (without parser) took 1890.22 ms. Allocated memory is still 170.9 MB. Free memory was 137.7 MB in the beginning and 113.9 MB in the end (delta: 23.9 MB). Peak memory consumption was 25.4 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:15,037 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 170.9 MB. Free memory is still 153.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 06:45:15,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.27 ms. Allocated memory is still 170.9 MB. Free memory was 137.5 MB in the beginning and 127.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:15,041 INFO L168 Benchmark]: Boogie Preprocessor took 62.63 ms. Allocated memory is still 170.9 MB. Free memory was 127.3 MB in the beginning and 155.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:15,041 INFO L168 Benchmark]: RCFGBuilder took 378.27 ms. Allocated memory is still 170.9 MB. Free memory was 155.5 MB in the beginning and 140.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:15,042 INFO L168 Benchmark]: TraceAbstraction took 1274.33 ms. Allocated memory is still 170.9 MB. Free memory was 139.7 MB in the beginning and 113.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 27.5 MB. Max. memory is 8.0 GB. [2021-04-16 06:45:15,045 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 170.9 MB. Free memory is still 153.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 168.27 ms. Allocated memory is still 170.9 MB. Free memory was 137.5 MB in the beginning and 127.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 62.63 ms. Allocated memory is still 170.9 MB. Free memory was 127.3 MB in the beginning and 155.5 MB in the end (delta: -28.2 MB). Peak memory consumption was 5.3 MB. Max. memory is 8.0 GB. * RCFGBuilder took 378.27 ms. Allocated memory is still 170.9 MB. Free memory was 155.5 MB in the beginning and 140.3 MB in the end (delta: 15.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1274.33 ms. Allocated memory is still 170.9 MB. Free memory was 139.7 MB in the beginning and 113.9 MB in the end (delta: 25.9 MB). Peak memory consumption was 27.5 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; [L15] _Bool k=__VERIFIER_nondet_bool(); [L16] unsigned int i,n,j; [L17] int a[1025]; [L19] COND TRUE \read(k) [L20] n=0 [L25] i=0 [L26] j=__VERIFIER_nondet_uint() [L27] COND FALSE !(j > 10000) [L30] COND TRUE i <= n [L31] i++ [L32] j= j +2 [L30] COND FALSE !(i <= n) [L35] a[i]=0 [L36] CALL __VERIFIER_assert(j<1025) [L7] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1208.1ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 8.8ms, AutomataDifference: 377.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 7.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 45 SDtfs, 53 SDslu, 25 SDs, 0 SdLazy, 73 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 312.3ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 21.8ms AutomataMinimizationTime, 2 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...