/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/volatile_alias.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 01:58:27,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 01:58:27,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 01:58:28,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 01:58:28,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 01:58:28,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 01:58:28,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 01:58:28,040 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 01:58:28,041 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 01:58:28,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 01:58:28,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 01:58:28,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 01:58:28,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 01:58:28,088 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 01:58:28,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 01:58:28,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 01:58:28,099 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 01:58:28,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 01:58:28,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 01:58:28,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 01:58:28,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 01:58:28,150 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 01:58:28,150 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 01:58:28,156 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 01:58:28,157 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 01:58:28,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 01:58:28,157 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 01:58:28,157 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 01:58:28,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 01:58:28,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 01:58:28,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 01:58:28,160 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 01:58:28,160 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 01:58:28,160 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 01:58:28,160 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 01:58:28,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 01:58:28,161 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 01:58:28,161 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 01:58:28,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 01:58:28,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 01:58:28,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 01:58:28,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 01:58:28,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 01:58:28,163 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 01:58:28,163 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 01:58:28,653 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 01:58:28,679 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 01:58:28,683 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 01:58:28,684 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 01:58:28,685 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 01:58:28,686 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/volatile_alias.i [2021-02-22 01:58:28,775 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0268eaa6d/9941b35cb4a3498bada4cd45cdb6bc71/FLAGf3d1f6e93 [2021-02-22 01:58:29,376 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 01:58:29,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/volatile_alias.i [2021-02-22 01:58:29,384 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0268eaa6d/9941b35cb4a3498bada4cd45cdb6bc71/FLAGf3d1f6e93 [2021-02-22 01:58:29,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0268eaa6d/9941b35cb4a3498bada4cd45cdb6bc71 [2021-02-22 01:58:29,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 01:58:29,789 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 01:58:29,792 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 01:58:29,792 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 01:58:29,796 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 01:58:29,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:58:29" (1/1) ... [2021-02-22 01:58:29,801 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23668de9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:29, skipping insertion in model container [2021-02-22 01:58:29,801 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 01:58:29" (1/1) ... [2021-02-22 01:58:29,811 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 01:58:29,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 01:58:29,999 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/volatile_alias.i[409,422] [2021-02-22 01:58:30,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:58:30,016 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 01:58:30,032 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/volatile_alias.i[409,422] [2021-02-22 01:58:30,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 01:58:30,051 INFO L208 MainTranslator]: Completed translation [2021-02-22 01:58:30,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:30 WrapperNode [2021-02-22 01:58:30,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 01:58:30,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 01:58:30,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 01:58:30,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 01:58:30,069 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:30" (1/1) ... [2021-02-22 01:58:30,069 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:30" (1/1) ... [2021-02-22 01:58:30,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:30" (1/1) ... [2021-02-22 01:58:30,077 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:30" (1/1) ... [2021-02-22 01:58:30,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:30" (1/1) ... [2021-02-22 01:58:30,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:30" (1/1) ... [2021-02-22 01:58:30,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:30" (1/1) ... [2021-02-22 01:58:30,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 01:58:30,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 01:58:30,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 01:58:30,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 01:58:30,091 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:30" (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 [2021-02-22 01:58:30,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 01:58:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 01:58:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 01:58:30,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 01:58:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 01:58:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 01:58:30,213 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 01:58:30,214 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 01:58:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 01:58:30,215 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 01:58:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 01:58:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 01:58:30,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 01:58:30,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 01:58:30,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 01:58:30,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 01:58:30,615 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-22 01:58:30,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:58:30 BoogieIcfgContainer [2021-02-22 01:58:30,640 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 01:58:30,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 01:58:30,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 01:58:30,653 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 01:58:30,653 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 01:58:29" (1/3) ... [2021-02-22 01:58:30,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61501fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:58:30, skipping insertion in model container [2021-02-22 01:58:30,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 01:58:30" (2/3) ... [2021-02-22 01:58:30,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61501fa7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 01:58:30, skipping insertion in model container [2021-02-22 01:58:30,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 01:58:30" (3/3) ... [2021-02-22 01:58:30,671 INFO L111 eAbstractionObserver]: Analyzing ICFG volatile_alias.i [2021-02-22 01:58:30,694 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 01:58:30,712 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 01:58:30,733 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 01:58:30,759 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 01:58:30,759 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 01:58:30,759 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 01:58:30,759 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 01:58:30,759 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 01:58:30,760 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 01:58:30,760 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 01:58:30,760 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 01:58:30,776 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-02-22 01:58:30,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-22 01:58:30,785 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 01:58:30,786 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] [2021-02-22 01:58:30,787 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 01:58:30,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 01:58:30,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1349389068, now seen corresponding path program 1 times [2021-02-22 01:58:30,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 01:58:30,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223533751] [2021-02-22 01:58:30,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 01:58:30,886 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 01:58:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:31,052 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,054 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:31,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:58:31,085 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,087 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-22 01:58:31,113 WARN L141 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size [2021-02-22 01:58:31,115 WARN L147 QuantifierPusher]: treesize reduction 2, result has 83.3 percent of original size 10 [2021-02-22 01:58:31,142 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,143 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 01:58:31,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 01:58:31,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:31,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 01:58:31,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 01:58:31,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 01:58:31,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 01:58:31,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 01:58:31,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223533751] [2021-02-22 01:58:31,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 01:58:31,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-22 01:58:31,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22683767] [2021-02-22 01:58:31,304 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-22 01:58:31,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 01:58:31,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-22 01:58:31,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-22 01:58:31,330 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 8 states. [2021-02-22 01:58:31,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 01:58:31,700 INFO L93 Difference]: Finished difference Result 40 states and 39 transitions. [2021-02-22 01:58:31,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-22 01:58:31,704 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2021-02-22 01:58:31,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 01:58:31,728 INFO L225 Difference]: With dead ends: 40 [2021-02-22 01:58:31,728 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 01:58:31,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-02-22 01:58:31,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 01:58:31,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 01:58:31,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 01:58:31,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 01:58:31,760 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2021-02-22 01:58:31,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 01:58:31,760 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 01:58:31,760 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-22 01:58:31,761 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 01:58:31,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 01:58:31,761 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 01:58:31,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 01:58:32,108 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-22 01:58:32,108 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-22 01:58:32,108 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-22 01:58:32,109 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-22 01:58:32,109 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-22 01:58:32,109 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:58:32,109 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-22 01:58:32,109 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 01:58:32,109 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-22 01:58:32,110 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)|) (= |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|)) [2021-02-22 01:58:32,110 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-22 01:58:32,110 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-22 01:58:32,110 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:58:32,111 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 01:58:32,111 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 01:58:32,111 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 01:58:32,111 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 01:58:32,111 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) the Hoare annotation is: false [2021-02-22 01:58:32,112 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 8 18) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-22 01:58:32,112 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 8 18) the Hoare annotation is: (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 0) [2021-02-22 01:58:32,112 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: false [2021-02-22 01:58:32,112 INFO L185 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 0) [2021-02-22 01:58:32,112 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: false [2021-02-22 01:58:32,113 INFO L185 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: (and (= main_~p~0.base |main_~#a~0.base|) (= |main_~#a~0.offset| main_~p~0.offset) (= (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|) 4)) [2021-02-22 01:58:32,113 INFO L185 CegarLoopUtils]: At program point L14-1(lines 14 16) the Hoare annotation is: (and (= |main_#t~mem8| 0) (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 0)) [2021-02-22 01:58:32,113 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 8 18) the Hoare annotation is: (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 0) [2021-02-22 01:58:32,113 INFO L185 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: (and (= main_~p~0.base |main_~#a~0.base|) (= |main_~#a~0.offset| main_~p~0.offset) (= (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|) 4)) [2021-02-22 01:58:32,114 INFO L185 CegarLoopUtils]: At program point L13-1(line 13) the Hoare annotation is: (and (= main_~p~0.base |main_~#a~0.base|) (= |main_~#a~0.offset| main_~p~0.offset) (= (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|) 4) (= |main_#t~mem7| 4)) [2021-02-22 01:58:32,114 INFO L185 CegarLoopUtils]: At program point L14-2(line 14) the Hoare annotation is: false [2021-02-22 01:58:32,114 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (and (= main_~p~0.base |main_~#a~0.base|) (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 0) (= |main_~#a~0.offset| main_~p~0.offset) (= |main_#t~mem7| 4)) [2021-02-22 01:58:32,114 INFO L192 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: true [2021-02-22 01:58:32,115 INFO L185 CegarLoopUtils]: At program point L14-4(line 14) the Hoare annotation is: (and (= |main_#t~mem8| 0) (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 0)) [2021-02-22 01:58:32,115 INFO L185 CegarLoopUtils]: At program point L10-1(line 10) the Hoare annotation is: (= (select (select |#memory_int| |main_~#a~0.base|) |main_~#a~0.offset|) 4) [2021-02-22 01:58:32,115 INFO L185 CegarLoopUtils]: At program point L14-5(lines 14 16) the Hoare annotation is: (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 0) [2021-02-22 01:58:32,115 INFO L185 CegarLoopUtils]: At program point L10-2(line 10) the Hoare annotation is: (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 0) [2021-02-22 01:58:32,116 INFO L185 CegarLoopUtils]: At program point L10-3(line 10) the Hoare annotation is: (= (select (select |#memory_int| main_~p~0.base) main_~p~0.offset) 0) [2021-02-22 01:58:32,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 01:58:32 BoogieIcfgContainer [2021-02-22 01:58:32,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 01:58:32,134 INFO L168 Benchmark]: Toolchain (without parser) took 2356.56 ms. Allocated memory is still 151.0 MB. Free memory was 127.8 MB in the beginning and 126.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 58.9 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:32,135 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 01:58:32,136 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.15 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 117.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:32,137 INFO L168 Benchmark]: Boogie Preprocessor took 36.07 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:32,138 INFO L168 Benchmark]: RCFGBuilder took 550.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 134.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:32,139 INFO L168 Benchmark]: TraceAbstraction took 1488.10 ms. Allocated memory is still 151.0 MB. Free memory was 134.3 MB in the beginning and 126.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. [2021-02-22 01:58:32,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 125.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 260.15 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 117.5 MB in the end (delta: 9.0 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.07 ms. Allocated memory is still 151.0 MB. Free memory was 117.5 MB in the beginning and 116.3 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 550.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 134.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1488.10 ms. Allocated memory is still 151.0 MB. Free memory was 134.3 MB in the beginning and 126.5 MB in the end (delta: 7.8 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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: 8]: Procedure Contract for main Derived contract for procedure main: unknown-#memory_int-unknown[p][p] == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 10 SDslu, 68 SDs, 0 SdLazy, 61 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=33occurred 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, 33 LocationsWithAnnotation, 33 PreInvPairs, 40 NumberOfFragments, 189 HoareAnnotationTreeSize, 33 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 33 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s 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...