/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test26-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:22:56,112 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:22:56,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:22:56,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:22:56,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:22:56,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:22:56,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:22:56,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:22:56,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:22:56,222 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:22:56,228 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:22:56,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:22:56,235 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:22:56,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:22:56,239 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:22:56,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:22:56,243 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:22:56,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:22:56,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:22:56,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:22:56,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:22:56,269 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:22:56,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:22:56,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:22:56,271 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:22:56,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:22:56,272 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:22:56,272 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:22:56,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:22:56,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:22:56,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:22:56,273 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:22:56,273 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:22:56,273 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:22:56,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:22:56,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:22:56,274 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:22:56,274 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:22:56,274 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:22:56,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:22:56,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:22:56,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:22:56,275 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:22:56,275 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:22:56,276 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:22:56,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:22:56,680 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:22:56,684 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:22:56,686 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:22:56,686 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:22:56,688 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test26-1.c [2021-02-24 04:22:56,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/474bb3325/bde07e197ef64a65ad4220f526604a52/FLAG23a7272b7 [2021-02-24 04:22:57,390 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:22:57,391 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-1.c [2021-02-24 04:22:57,399 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/474bb3325/bde07e197ef64a65ad4220f526604a52/FLAG23a7272b7 [2021-02-24 04:22:57,759 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/474bb3325/bde07e197ef64a65ad4220f526604a52 [2021-02-24 04:22:57,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:22:57,780 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:22:57,785 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:22:57,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:22:57,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:22:57,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:22:57" (1/1) ... [2021-02-24 04:22:57,793 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efb2ae7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:57, skipping insertion in model container [2021-02-24 04:22:57,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:22:57" (1/1) ... [2021-02-24 04:22:57,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:22:57,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:22:58,071 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-1.c[493,506] [2021-02-24 04:22:58,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:22:58,090 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:22:58,110 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test26-1.c[493,506] [2021-02-24 04:22:58,111 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:22:58,130 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:22:58,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:58 WrapperNode [2021-02-24 04:22:58,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:22:58,134 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:22:58,135 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:22:58,135 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:22:58,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:58" (1/1) ... [2021-02-24 04:22:58,149 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:58" (1/1) ... [2021-02-24 04:22:58,156 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:58" (1/1) ... [2021-02-24 04:22:58,156 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:58" (1/1) ... [2021-02-24 04:22:58,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:58" (1/1) ... [2021-02-24 04:22:58,166 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:58" (1/1) ... [2021-02-24 04:22:58,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:58" (1/1) ... [2021-02-24 04:22:58,170 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:22:58,171 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:22:58,171 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:22:58,171 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:22:58,172 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:58" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:22:58,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:22:58,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:22:58,260 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:22:58,261 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2021-02-24 04:22:58,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:22:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:22:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:22:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:22:58,261 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:22:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2021-02-24 04:22:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:22:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:22:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:22:58,262 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:22:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:22:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:22:58,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:22:58,634 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:22:58,635 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 04:22:58,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:22:58 BoogieIcfgContainer [2021-02-24 04:22:58,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:22:58,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:22:58,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:22:58,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:22:58,654 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:22:57" (1/3) ... [2021-02-24 04:22:58,655 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da8b582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:22:58, skipping insertion in model container [2021-02-24 04:22:58,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:22:58" (2/3) ... [2021-02-24 04:22:58,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3da8b582 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:22:58, skipping insertion in model container [2021-02-24 04:22:58,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:22:58" (3/3) ... [2021-02-24 04:22:58,661 INFO L111 eAbstractionObserver]: Analyzing ICFG test26-1.c [2021-02-24 04:22:58,676 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:22:58,682 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:22:58,709 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:22:58,736 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:22:58,736 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:22:58,736 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:22:58,736 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:22:58,737 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:22:58,737 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:22:58,737 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:22:58,737 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:22:58,754 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-24 04:22:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-24 04:22:58,766 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:22:58,767 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] [2021-02-24 04:22:58,767 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:22:58,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:22:58,775 INFO L82 PathProgramCache]: Analyzing trace with hash -596832601, now seen corresponding path program 1 times [2021-02-24 04:22:58,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:22:58,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386151995] [2021-02-24 04:22:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:22:58,886 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:22:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:22:59,124 WARN L141 QuantifierPusher]: treesize reduction 17, result has 15.0 percent of original size [2021-02-24 04:22:59,126 WARN L147 QuantifierPusher]: treesize reduction 17, result has 15.0 percent of original size 3 [2021-02-24 04:22:59,148 WARN L141 QuantifierPusher]: treesize reduction 17, result has 15.0 percent of original size [2021-02-24 04:22:59,154 WARN L147 QuantifierPusher]: treesize reduction 17, result has 15.0 percent of original size 3 [2021-02-24 04:22:59,159 WARN L141 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size [2021-02-24 04:22:59,164 WARN L147 QuantifierPusher]: treesize reduction 16, result has 38.5 percent of original size 10 [2021-02-24 04:22:59,210 WARN L141 QuantifierPusher]: treesize reduction 13, result has 70.5 percent of original size [2021-02-24 04:22:59,216 WARN L147 QuantifierPusher]: treesize reduction 13, result has 70.5 percent of original size 31 [2021-02-24 04:22:59,294 WARN L141 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size [2021-02-24 04:22:59,298 WARN L147 QuantifierPusher]: treesize reduction 22, result has 37.1 percent of original size 13 [2021-02-24 04:22:59,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:59,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:22:59,346 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:59,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:22:59,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:22:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:22:59,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:59,523 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:22:59,528 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:59,530 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:22:59,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-02-24 04:22:59,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:22:59,610 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:59,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:22:59,634 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:59,637 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 44 [2021-02-24 04:22:59,710 WARN L141 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size [2021-02-24 04:22:59,713 WARN L147 QuantifierPusher]: treesize reduction 3, result has 90.0 percent of original size 27 [2021-02-24 04:22:59,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:22:59,764 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-24 04:22:59,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:22:59,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386151995] [2021-02-24 04:22:59,814 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:22:59,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-02-24 04:22:59,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020263559] [2021-02-24 04:22:59,821 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 04:22:59,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:22:59,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 04:22:59,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-02-24 04:22:59,846 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 13 states. [2021-02-24 04:23:00,407 WARN L202 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2021-02-24 04:23:00,599 WARN L202 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2021-02-24 04:23:00,766 WARN L202 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2021-02-24 04:23:00,902 WARN L202 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 68 [2021-02-24 04:23:01,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:23:01,133 INFO L93 Difference]: Finished difference Result 44 states and 43 transitions. [2021-02-24 04:23:01,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 04:23:01,135 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 30 [2021-02-24 04:23:01,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:23:01,142 INFO L225 Difference]: With dead ends: 44 [2021-02-24 04:23:01,142 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 04:23:01,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=123, Invalid=477, Unknown=0, NotChecked=0, Total=600 [2021-02-24 04:23:01,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 04:23:01,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 04:23:01,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 04:23:01,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 04:23:01,175 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-02-24 04:23:01,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:23:01,175 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 04:23:01,176 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 04:23:01,176 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 04:23:01,176 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 04:23:01,176 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:23:01,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 04:23:02,234 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 04:23:02,235 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 04:23:02,235 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 04:23:02,235 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 04:23:02,236 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 04:23:02,236 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 04:23:02,236 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 04:23:02,236 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 04:23:02,236 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-24 04:23:02,236 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initFINAL(lines 5 7) the Hoare annotation is: (= |~#global~0.offset| 0) [2021-02-24 04:23:02,237 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |~#global~0.base| |old(~#global~0.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |~#global~0.offset| |old(~#global~0.offset)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-24 04:23:02,237 INFO L185 CegarLoopUtils]: At program point L5(lines 5 7) the Hoare annotation is: (= |~#global~0.offset| 0) [2021-02-24 04:23:02,237 INFO L185 CegarLoopUtils]: At program point L5-1(lines 5 7) the Hoare annotation is: (= |~#global~0.offset| 0) [2021-02-24 04:23:02,237 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 04:23:02,237 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 04:23:02,238 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (= |~#global~0.offset| 0) [2021-02-24 04:23:02,238 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: (= |~#global~0.offset| 0) [2021-02-24 04:23:02,238 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (= |~#global~0.offset| 0) [2021-02-24 04:23:02,238 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 04:23:02,238 INFO L185 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: (= |~#global~0.offset| 0) [2021-02-24 04:23:02,238 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 26) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2021-02-24 04:23:02,239 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 14 28) the Hoare annotation is: (or (= |#memory_int| |old(#memory_int)|) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,239 INFO L185 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2021-02-24 04:23:02,239 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2021-02-24 04:23:02,239 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 14 28) the Hoare annotation is: (or (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4))) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,239 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (or (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4))) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,240 INFO L185 CegarLoopUtils]: At program point L21(lines 15 28) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2021-02-24 04:23:02,240 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (or (not (= |~#global~0.offset| 0)) (let ((.cse0 (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4)))) (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) .cse0) (= main_~pd~0.offset 0) (= .cse0 |main_#t~mem8|) (= |~#global~0.base| main_~pd~0.base)))) [2021-02-24 04:23:02,240 INFO L185 CegarLoopUtils]: At program point L20-1(lines 20 22) the Hoare annotation is: (or (let ((.cse0 (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4)))) (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) .cse0) (= main_~pd~0.offset 0) (= |main_#t~mem9| |main_#t~mem8|) (= .cse0 |main_#t~mem8|) (= |~#global~0.base| main_~pd~0.base))) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,240 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (or (and (= |#memory_int| |old(#memory_int)|) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,240 INFO L185 CegarLoopUtils]: At program point L20-2(line 20) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2021-02-24 04:23:02,241 INFO L185 CegarLoopUtils]: At program point L18-1(line 18) the Hoare annotation is: (or (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4))) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,241 INFO L185 CegarLoopUtils]: At program point L20-3(line 20) the Hoare annotation is: (not (= |~#global~0.offset| 0)) [2021-02-24 04:23:02,241 INFO L185 CegarLoopUtils]: At program point L20-4(line 20) the Hoare annotation is: (or (let ((.cse0 (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4)))) (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) .cse0) (= main_~pd~0.offset 0) (= |main_#t~mem9| |main_#t~mem8|) (= .cse0 |main_#t~mem8|) (= |~#global~0.base| main_~pd~0.base))) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,241 INFO L185 CegarLoopUtils]: At program point L20-5(line 20) the Hoare annotation is: (or (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4))) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,241 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 14 28) the Hoare annotation is: (or (and (= (select (select |#memory_int| main_~pd~0.base) main_~pd~0.offset) (select (select |#memory_int| |~#global~0.base|) (+ |~#global~0.offset| 4))) (= main_~pd~0.offset 0) (= |~#global~0.base| main_~pd~0.base)) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,242 INFO L185 CegarLoopUtils]: At program point assignEXIT(lines 9 12) the Hoare annotation is: (or (let ((.cse0 (not (= |assign_#in~pa.base| |assign_#in~pb.base|))) (.cse2 (= assign_~pb.offset assign_~pa.offset))) (and (= assign_~pa.base |assign_#in~pa.base|) (or .cse0 (let ((.cse1 (select |#memory_int| |assign_#in~pa.base|))) (= (select .cse1 |assign_#in~pa.offset|) (select .cse1 |assign_#in~pb.offset|)))) (= assign_~pa.offset |assign_#in~pa.offset|) (or (not .cse2) (= |assign_#in~pb.offset| |assign_#in~pa.offset|)) (or (let ((.cse3 (= assign_~pa.base assign_~pb.base))) (and (or .cse0 .cse3) (or (= assign_~pb.offset |assign_#in~pb.offset|) (not .cse3)))) .cse2))) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,242 INFO L185 CegarLoopUtils]: At program point assignENTRY(lines 9 12) the Hoare annotation is: (or (= |#memory_int| |old(#memory_int)|) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,242 INFO L185 CegarLoopUtils]: At program point assignFINAL(lines 9 12) the Hoare annotation is: (or (let ((.cse0 (not (= |assign_#in~pa.base| |assign_#in~pb.base|))) (.cse2 (= assign_~pb.offset assign_~pa.offset))) (and (= assign_~pa.base |assign_#in~pa.base|) (or .cse0 (let ((.cse1 (select |#memory_int| |assign_#in~pa.base|))) (= (select .cse1 |assign_#in~pa.offset|) (select .cse1 |assign_#in~pb.offset|)))) (= assign_~pa.offset |assign_#in~pa.offset|) (or (not .cse2) (= |assign_#in~pb.offset| |assign_#in~pa.offset|)) (or (let ((.cse3 (= assign_~pa.base assign_~pb.base))) (and (or .cse0 .cse3) (or (= assign_~pb.offset |assign_#in~pb.offset|) (not .cse3)))) .cse2))) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,243 INFO L185 CegarLoopUtils]: At program point L11(line 11) the Hoare annotation is: (or (let ((.cse0 (= assign_~pb.offset assign_~pa.offset))) (and (= assign_~pa.base |assign_#in~pa.base|) (= |#memory_int| |old(#memory_int)|) (= assign_~pa.offset |assign_#in~pa.offset|) (or (not .cse0) (= |assign_#in~pb.offset| |assign_#in~pa.offset|)) (or (let ((.cse1 (= assign_~pa.base assign_~pb.base))) (and (or (not (= |assign_#in~pa.base| |assign_#in~pb.base|)) .cse1) (or (= assign_~pb.offset |assign_#in~pb.offset|) (not .cse1)))) .cse0))) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,243 INFO L185 CegarLoopUtils]: At program point L11-1(line 11) the Hoare annotation is: (or (not (= |~#global~0.offset| 0)) (let ((.cse1 (not (= |assign_#in~pa.base| |assign_#in~pb.base|))) (.cse0 (= assign_~pb.offset assign_~pa.offset))) (and (= assign_~pa.base |assign_#in~pa.base|) (= |#memory_int| |old(#memory_int)|) (= assign_~pa.offset |assign_#in~pa.offset|) (or (not .cse0) (= |assign_#in~pb.offset| |assign_#in~pa.offset|)) (or .cse1 (= |assign_#t~mem7| (select (store (select |#memory_int| assign_~pa.base) assign_~pa.offset |assign_#t~mem7|) |assign_#in~pb.offset|))) (or (let ((.cse2 (= assign_~pa.base assign_~pb.base))) (and (or .cse1 .cse2) (or (= assign_~pb.offset |assign_#in~pb.offset|) (not .cse2)))) .cse0)))) [2021-02-24 04:23:02,243 INFO L185 CegarLoopUtils]: At program point L9(lines 9 12) the Hoare annotation is: (or (and (= assign_~pa.base |assign_#in~pa.base|) (= |#memory_int| |old(#memory_int)|) (= assign_~pa.offset |assign_#in~pa.offset|)) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,244 INFO L185 CegarLoopUtils]: At program point L11-2(line 11) the Hoare annotation is: (or (let ((.cse0 (not (= |assign_#in~pa.base| |assign_#in~pb.base|))) (.cse2 (= assign_~pb.offset assign_~pa.offset))) (and (= assign_~pa.base |assign_#in~pa.base|) (or .cse0 (let ((.cse1 (select |#memory_int| |assign_#in~pa.base|))) (= (select .cse1 |assign_#in~pa.offset|) (select .cse1 |assign_#in~pb.offset|)))) (= assign_~pa.offset |assign_#in~pa.offset|) (or (not .cse2) (= |assign_#in~pb.offset| |assign_#in~pa.offset|)) (or .cse0 (= |assign_#t~mem7| (select (store (select |#memory_int| assign_~pa.base) assign_~pa.offset |assign_#t~mem7|) |assign_#in~pb.offset|))) (or (let ((.cse3 (= assign_~pa.base assign_~pb.base))) (and (or .cse0 .cse3) (or (= assign_~pb.offset |assign_#in~pb.offset|) (not .cse3)))) .cse2))) (not (= |~#global~0.offset| 0))) [2021-02-24 04:23:02,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:23:02 BoogieIcfgContainer [2021-02-24 04:23:02,266 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:23:02,267 INFO L168 Benchmark]: Toolchain (without parser) took 4500.98 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.1 MB in the beginning and 156.3 MB in the end (delta: -29.2 MB). Peak memory consumption was 97.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:23:02,268 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:23:02,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 345.71 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 04:23:02,270 INFO L168 Benchmark]: Boogie Preprocessor took 35.84 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 04:23:02,270 INFO L168 Benchmark]: RCFGBuilder took 466.74 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 133.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:23:02,271 INFO L168 Benchmark]: TraceAbstraction took 3619.63 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 132.5 MB in the beginning and 156.3 MB in the end (delta: -23.8 MB). Peak memory consumption was 102.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:23:02,279 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 124.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 345.71 ms. Allocated memory is still 151.0 MB. Free memory was 126.0 MB in the beginning and 116.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 35.84 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 466.74 ms. Allocated memory is still 151.0 MB. Free memory was 115.1 MB in the beginning and 133.0 MB in the end (delta: -17.9 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3619.63 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 132.5 MB in the beginning and 156.3 MB in the end (delta: -23.8 MB). Peak memory consumption was 102.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 26]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: !(global == 0) - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: ((unknown-#memory_int-unknown[pd][pd] == unknown-#memory_int-unknown[global][global + 4] && pd == 0) && global == pd) || !(global == 0) - ProcedureContractResult [Line: 9]: Procedure Contract for assign Derived contract for procedure assign: ((((pa == pa && (!(pa == pb) || unknown-#memory_int-unknown[pa][pa] == unknown-#memory_int-unknown[pa][pb])) && pa == pa) && (!(pb == pa) || pb == pa)) && (((!(pa == pb) || pa == pb) && (pb == pb || !(pa == pb))) || pb == pa)) || !(global == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 60 SDslu, 27 SDs, 0 SdLazy, 240 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 40 PreInvPairs, 44 NumberOfFragments, 659 HoareAnnotationTreeSize, 40 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 40 FomulaSimplificationsInter, 700 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, 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 correct! Received shutdown request...