/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/ldv-regression/oomInt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 23:04:37,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 23:04:37,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 23:04:37,282 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 23:04:37,311 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 23:04:37,314 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 23:04:37,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 23:04:37,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 23:04:37,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 23:04:37,323 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 23:04:37,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 23:04:37,353 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 23:04:37,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 23:04:37,356 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 23:04:37,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 23:04:37,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 23:04:37,369 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 23:04:37,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 23:04:37,406 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 23:04:37,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 23:04:37,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 23:04:37,411 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 23:04:37,411 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 23:04:37,411 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 23:04:37,411 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 23:04:37,412 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 23:04:37,412 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 23:04:37,412 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 23:04:37,413 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 23:04:37,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 23:04:37,414 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 23:04:37,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 23:04:37,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 23:04:37,415 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 23:04:37,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 23:04:37,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 23:04:37,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:04:37,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 23:04:37,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 23:04:37,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 23:04:37,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-23 23:04:37,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 23:04:37,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 23:04:37,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 23:04:37,835 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 23:04:37,835 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 23:04:37,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/oomInt.i [2021-02-23 23:04:37,922 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b61b335e/ee975bf3998a4ce9b842602206d95208/FLAG724de8e10 [2021-02-23 23:04:38,567 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 23:04:38,568 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/oomInt.i [2021-02-23 23:04:38,575 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b61b335e/ee975bf3998a4ce9b842602206d95208/FLAG724de8e10 [2021-02-23 23:04:38,935 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b61b335e/ee975bf3998a4ce9b842602206d95208 [2021-02-23 23:04:38,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 23:04:38,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 23:04:38,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:38,960 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 23:04:38,963 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 23:04:38,964 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:38" (1/1) ... [2021-02-23 23:04:38,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d66ba9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:38, skipping insertion in model container [2021-02-23 23:04:38,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 11:04:38" (1/1) ... [2021-02-23 23:04:38,973 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 23:04:38,989 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 23:04:39,145 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/oomInt.i[319,332] [2021-02-23 23:04:39,163 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:39,171 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 23:04:39,183 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/oomInt.i[319,332] [2021-02-23 23:04:39,185 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 23:04:39,200 INFO L208 MainTranslator]: Completed translation [2021-02-23 23:04:39,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:39 WrapperNode [2021-02-23 23:04:39,201 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 23:04:39,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 23:04:39,202 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 23:04:39,202 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 23:04:39,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:39" (1/1) ... [2021-02-23 23:04:39,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:39" (1/1) ... [2021-02-23 23:04:39,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:39" (1/1) ... [2021-02-23 23:04:39,220 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:39" (1/1) ... [2021-02-23 23:04:39,225 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:39" (1/1) ... [2021-02-23 23:04:39,226 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:39" (1/1) ... [2021-02-23 23:04:39,227 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:39" (1/1) ... [2021-02-23 23:04:39,229 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 23:04:39,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 23:04:39,230 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 23:04:39,230 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 23:04:39,231 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 23:04:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 23:04:39,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 23:04:39,325 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 23:04:39,325 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 23:04:39,325 INFO L138 BoogieDeclarations]: Found implementation of procedure abs_int [2021-02-23 23:04:39,325 INFO L138 BoogieDeclarations]: Found implementation of procedure firstFunction [2021-02-23 23:04:39,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 23:04:39,325 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 23:04:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 23:04:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 23:04:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 23:04:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 23:04:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure abs_int [2021-02-23 23:04:39,326 INFO L130 BoogieDeclarations]: Found specification of procedure firstFunction [2021-02-23 23:04:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 23:04:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 23:04:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 23:04:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 23:04:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 23:04:39,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 23:04:39,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 23:04:39,600 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 23:04:39,600 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 23:04:39,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:39 BoogieIcfgContainer [2021-02-23 23:04:39,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 23:04:39,611 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 23:04:39,611 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 23:04:39,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 23:04:39,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 11:04:38" (1/3) ... [2021-02-23 23:04:39,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7a0733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:39, skipping insertion in model container [2021-02-23 23:04:39,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 11:04:39" (2/3) ... [2021-02-23 23:04:39,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d7a0733 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 11:04:39, skipping insertion in model container [2021-02-23 23:04:39,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 11:04:39" (3/3) ... [2021-02-23 23:04:39,624 INFO L111 eAbstractionObserver]: Analyzing ICFG oomInt.i [2021-02-23 23:04:39,646 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 23:04:39,656 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 23:04:39,699 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 23:04:39,728 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 23:04:39,728 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 23:04:39,728 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-23 23:04:39,729 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 23:04:39,729 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 23:04:39,729 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 23:04:39,729 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 23:04:39,729 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 23:04:39,747 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2021-02-23 23:04:39,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 23:04:39,758 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:39,759 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] [2021-02-23 23:04:39,759 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:39,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:39,767 INFO L82 PathProgramCache]: Analyzing trace with hash -193580331, now seen corresponding path program 1 times [2021-02-23 23:04:39,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:39,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109784819] [2021-02-23 23:04:39,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:39,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:40,062 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:40,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:40,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:40,067 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:40,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:40,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 23:04:40,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:40,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:40,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:40,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:40,132 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:40,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:40,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:40,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:40,240 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:40,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 23:04:40,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:40,288 WARN L141 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-02-23 23:04:40,290 WARN L147 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size 9 [2021-02-23 23:04:40,303 WARN L141 QuantifierPusher]: treesize reduction -2, result has 125.0 percent of original size [2021-02-23 23:04:40,304 WARN L147 QuantifierPusher]: treesize reduction -2, result has 125.0 percent of original size 10 [2021-02-23 23:04:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:04:40,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109784819] [2021-02-23 23:04:40,328 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:40,328 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-23 23:04:40,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459077737] [2021-02-23 23:04:40,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-23 23:04:40,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:40,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-23 23:04:40,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-02-23 23:04:40,353 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 9 states. [2021-02-23 23:04:40,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:40,826 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2021-02-23 23:04:40,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 23:04:40,828 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2021-02-23 23:04:40,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:40,838 INFO L225 Difference]: With dead ends: 64 [2021-02-23 23:04:40,838 INFO L226 Difference]: Without dead ends: 28 [2021-02-23 23:04:40,842 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2021-02-23 23:04:40,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-23 23:04:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-02-23 23:04:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-23 23:04:40,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 27 transitions. [2021-02-23 23:04:40,889 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 27 transitions. Word has length 27 [2021-02-23 23:04:40,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:40,890 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 27 transitions. [2021-02-23 23:04:40,890 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-23 23:04:40,890 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 27 transitions. [2021-02-23 23:04:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 23:04:40,892 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 23:04:40,892 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] [2021-02-23 23:04:40,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 23:04:40,893 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 23:04:40,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 23:04:40,894 INFO L82 PathProgramCache]: Analyzing trace with hash 114457237, now seen corresponding path program 1 times [2021-02-23 23:04:40,894 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 23:04:40,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397189175] [2021-02-23 23:04:40,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 23:04:40,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:40,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:40,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:40,933 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:40,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:40,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 23:04:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:40,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:40,973 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 23:04:40,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-02-23 23:04:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 23:04:40,985 WARN L141 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size [2021-02-23 23:04:40,986 WARN L147 QuantifierPusher]: treesize reduction 5, result has 64.3 percent of original size 9 [2021-02-23 23:04:40,996 WARN L141 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size [2021-02-23 23:04:40,997 WARN L147 QuantifierPusher]: treesize reduction 9, result has 64.0 percent of original size 16 [2021-02-23 23:04:41,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 23:04:41,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 23:04:41,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 23:04:41,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397189175] [2021-02-23 23:04:41,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 23:04:41,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 23:04:41,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875894058] [2021-02-23 23:04:41,031 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 23:04:41,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 23:04:41,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 23:04:41,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 23:04:41,033 INFO L87 Difference]: Start difference. First operand 28 states and 27 transitions. Second operand 6 states. [2021-02-23 23:04:41,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 23:04:41,158 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2021-02-23 23:04:41,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 23:04:41,159 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2021-02-23 23:04:41,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 23:04:41,161 INFO L225 Difference]: With dead ends: 28 [2021-02-23 23:04:41,167 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 23:04:41,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-02-23 23:04:41,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 23:04:41,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 23:04:41,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 23:04:41,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 23:04:41,172 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2021-02-23 23:04:41,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 23:04:41,172 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 23:04:41,173 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 23:04:41,173 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 23:04:41,173 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 23:04:41,173 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 23:04:41,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 23:04:41,711 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 23:04:41,711 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 23:04:41,711 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 23:04:41,712 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 23:04:41,712 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 23:04:41,712 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:04:41,712 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 23:04:41,712 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 23:04:41,713 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-23 23:04:41,713 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-02-23 23:04:41,713 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~p~0 |old(~p~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 23:04:41,713 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 23:04:41,713 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 23:04:41,713 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:04:41,714 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 23:04:41,714 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 23:04:41,714 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 23:04:41,714 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 23:04:41,714 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 35 38) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2021-02-23 23:04:41,714 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 35 38) the Hoare annotation is: true [2021-02-23 23:04:41,715 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 35 38) the Hoare annotation is: true [2021-02-23 23:04:41,715 INFO L185 CegarLoopUtils]: At program point abs_intEXIT(lines 18 27) the Hoare annotation is: (let ((.cse0 (= (+ abs_int_~i 3) 0))) (or (and (not .cse0) (= |abs_int_#in~i| abs_int_~i)) (and (or (not (= (+ |abs_int_#in~i| 3) 0)) (<= 3 |abs_int_#res|)) .cse0))) [2021-02-23 23:04:41,715 INFO L185 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: (and (not (= (+ abs_int_~i 3) 0)) (= |abs_int_#in~i| abs_int_~i)) [2021-02-23 23:04:41,715 INFO L185 CegarLoopUtils]: At program point L24(line 24) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)) [2021-02-23 23:04:41,715 INFO L185 CegarLoopUtils]: At program point L20(lines 20 26) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)) [2021-02-23 23:04:41,716 INFO L192 CegarLoopUtils]: At program point abs_intENTRY(lines 18 27) the Hoare annotation is: true [2021-02-23 23:04:41,716 INFO L185 CegarLoopUtils]: At program point abs_intFINAL(lines 18 27) the Hoare annotation is: (let ((.cse0 (= (+ abs_int_~i 3) 0))) (or (and (not .cse0) (= |abs_int_#in~i| abs_int_~i)) (and (or (not (= (+ |abs_int_#in~i| 3) 0)) (<= 3 |abs_int_#res|)) .cse0))) [2021-02-23 23:04:41,716 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (<= 1 ~p~0) [2021-02-23 23:04:41,716 INFO L185 CegarLoopUtils]: At program point L31(line 31) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret7|)) [2021-02-23 23:04:41,716 INFO L185 CegarLoopUtils]: At program point L31-1(line 31) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret7|)) [2021-02-23 23:04:41,717 INFO L185 CegarLoopUtils]: At program point L31-2(line 31) the Hoare annotation is: (and (<= 1 |firstFunction_#t~ret7|) (<= 1 ~p~0)) [2021-02-23 23:04:41,717 INFO L185 CegarLoopUtils]: At program point firstFunctionENTRY(lines 29 33) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2021-02-23 23:04:41,717 INFO L192 CegarLoopUtils]: At program point firstFunctionFINAL(lines 29 33) the Hoare annotation is: true [2021-02-23 23:04:41,717 INFO L192 CegarLoopUtils]: At program point firstFunctionEXIT(lines 29 33) the Hoare annotation is: true [2021-02-23 23:04:41,717 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 8 14) the Hoare annotation is: true [2021-02-23 23:04:41,717 INFO L185 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~i| 0) (not (<= 1 ~p~0))) [2021-02-23 23:04:41,718 INFO L185 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~i| 0) (not (<= 1 ~p~0))) [2021-02-23 23:04:41,718 INFO L185 CegarLoopUtils]: At program point L10(lines 10 13) the Hoare annotation is: (or (not (<= 1 ~p~0)) (= |__VERIFIER_assert_#in~i| 0) (not (= __VERIFIER_assert_~i 0))) [2021-02-23 23:04:41,718 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 8 14) the Hoare annotation is: (or (not (<= 1 ~p~0)) (= |__VERIFIER_assert_#in~i| 0) (not (= __VERIFIER_assert_~i 0))) [2021-02-23 23:04:41,718 INFO L185 CegarLoopUtils]: At program point L10-2(lines 8 14) the Hoare annotation is: (or (not (<= 1 ~p~0)) (= |__VERIFIER_assert_#in~i| 0) (not (= __VERIFIER_assert_~i 0))) [2021-02-23 23:04:41,719 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~i| 0) (not (<= 1 ~p~0))) [2021-02-23 23:04:41,741 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 11:04:41 BoogieIcfgContainer [2021-02-23 23:04:41,741 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 23:04:41,746 INFO L168 Benchmark]: Toolchain (without parser) took 2801.80 ms. Allocated memory was 154.1 MB in the beginning and 213.9 MB in the end (delta: 59.8 MB). Free memory was 130.9 MB in the beginning and 161.8 MB in the end (delta: -31.0 MB). Peak memory consumption was 105.3 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:41,747 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory was 127.7 MB in the beginning and 127.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 23:04:41,749 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.51 ms. Allocated memory is still 154.1 MB. Free memory was 129.9 MB in the beginning and 120.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:41,751 INFO L168 Benchmark]: Boogie Preprocessor took 27.54 ms. Allocated memory is still 154.1 MB. Free memory was 120.5 MB in the beginning and 119.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:41,753 INFO L168 Benchmark]: RCFGBuilder took 374.29 ms. Allocated memory is still 154.1 MB. Free memory was 119.2 MB in the beginning and 105.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:41,757 INFO L168 Benchmark]: TraceAbstraction took 2130.06 ms. Allocated memory was 154.1 MB in the beginning and 213.9 MB in the end (delta: 59.8 MB). Free memory was 104.7 MB in the beginning and 161.8 MB in the end (delta: -57.1 MB). Peak memory consumption was 79.1 MB. Max. memory is 8.0 GB. [2021-02-23 23:04:41,769 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory was 127.7 MB in the beginning and 127.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 241.51 ms. Allocated memory is still 154.1 MB. Free memory was 129.9 MB in the beginning and 120.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 27.54 ms. Allocated memory is still 154.1 MB. Free memory was 120.5 MB in the beginning and 119.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 374.29 ms. Allocated memory is still 154.1 MB. Free memory was 119.2 MB in the beginning and 105.1 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2130.06 ms. Allocated memory was 154.1 MB in the beginning and 213.9 MB in the end (delta: 59.8 MB). Free memory was 104.7 MB in the beginning and 161.8 MB in the end (delta: -57.1 MB). Peak memory consumption was 79.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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 - ProcedureContractResult [Line: 18]: Procedure Contract for abs_int Derived contract for procedure abs_int: (!(i + 3 == 0) && \old(i) == i) || ((!(\old(i) + 3 == 0) || 3 <= \result) && i + 3 == 0) - ProcedureContractResult [Line: 29]: Procedure Contract for firstFunction Derived contract for procedure firstFunction: 1 - ProcedureContractResult [Line: 35]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 8]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (!(1 <= p) || \old(i) == 0) || !(i == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 41 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 45 SDtfs, 44 SDslu, 165 SDs, 0 SdLazy, 127 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 45 PreInvPairs, 67 NumberOfFragments, 226 HoareAnnotationTreeSize, 45 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 577 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 5018 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 correct! Received shutdown request...