/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_3-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:49:26,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:49:26,027 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:49:26,091 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:49:26,121 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:49:26,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:49:26,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:49:26,130 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:49:26,131 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:49:26,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:49:26,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:49:26,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:49:26,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:49:26,141 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:49:26,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:49:26,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:49:26,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:49:26,168 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:49:26,169 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:49:26,170 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:49:26,171 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 18:49:26,196 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:49:26,196 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:49:26,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:49:26,202 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:49:26,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:49:26,202 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:49:26,202 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:49:26,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:49:26,203 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:49:26,203 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:49:26,204 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:49:26,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:49:26,205 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:49:26,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:49:26,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:49:26,206 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:49:26,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:49:26,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:49:26,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:49:26,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:49:26,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:49:26,207 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:49:26,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:49:26,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:49:26,804 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:49:26,808 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:49:26,810 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:49:26,811 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:49:26,812 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2021-02-23 18:49:26,912 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da46b6e79/79eefd23548741ec89f28e4187510439/FLAGfb7209232 [2021-02-23 18:49:27,541 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:49:27,542 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-2.c [2021-02-23 18:49:27,552 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da46b6e79/79eefd23548741ec89f28e4187510439/FLAGfb7209232 [2021-02-23 18:49:27,906 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da46b6e79/79eefd23548741ec89f28e4187510439 [2021-02-23 18:49:27,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:49:27,928 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:49:27,935 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:49:27,935 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:49:27,941 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:49:27,942 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:49:27" (1/1) ... [2021-02-23 18:49:27,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12a4bd45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:49:27, skipping insertion in model container [2021-02-23 18:49:27,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:49:27" (1/1) ... [2021-02-23 18:49:27,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:49:27,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:49:28,242 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-2.c[376,389] [2021-02-23 18:49:28,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:49:28,276 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:49:28,297 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-2.c[376,389] [2021-02-23 18:49:28,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:49:28,323 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:49:28,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:49:28 WrapperNode [2021-02-23 18:49:28,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:49:28,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:49:28,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:49:28,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:49:28,341 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:49:28" (1/1) ... [2021-02-23 18:49:28,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:49:28" (1/1) ... [2021-02-23 18:49:28,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:49:28" (1/1) ... [2021-02-23 18:49:28,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:49:28" (1/1) ... [2021-02-23 18:49:28,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:49:28" (1/1) ... [2021-02-23 18:49:28,376 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:49:28" (1/1) ... [2021-02-23 18:49:28,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:49:28" (1/1) ... [2021-02-23 18:49:28,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:49:28,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:49:28,388 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:49:28,388 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:49:28,389 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:49:28" (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 18:49:28,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:49:28,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:49:28,509 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:49:28,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:49:28,509 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:49:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:49:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:49:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:49:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:49:28,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2021-02-23 18:49:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:49:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:49:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:49:28,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:49:28,512 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:49:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:49:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:49:28,513 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:49:28,924 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:49:28,924 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-23 18:49:28,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:49:28 BoogieIcfgContainer [2021-02-23 18:49:28,927 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:49:28,929 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:49:28,929 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:49:28,933 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:49:28,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:49:27" (1/3) ... [2021-02-23 18:49:28,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d290bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:49:28, skipping insertion in model container [2021-02-23 18:49:28,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:49:28" (2/3) ... [2021-02-23 18:49:28,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d290bdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:49:28, skipping insertion in model container [2021-02-23 18:49:28,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:49:28" (3/3) ... [2021-02-23 18:49:28,938 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_3-2.c [2021-02-23 18:49:28,946 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:49:28,952 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:49:28,977 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:49:29,005 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:49:29,005 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:49:29,006 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:49:29,006 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:49:29,006 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:49:29,006 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:49:29,007 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:49:29,007 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:49:29,025 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2021-02-23 18:49:29,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-23 18:49:29,035 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:29,036 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] [2021-02-23 18:49:29,039 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:29,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:29,053 INFO L82 PathProgramCache]: Analyzing trace with hash -108989713, now seen corresponding path program 1 times [2021-02-23 18:49:29,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:29,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [366468106] [2021-02-23 18:49:29,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:29,177 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:29,307 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:29,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:29,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:29,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:29,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:29,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:29,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:29,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:29,414 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 18:49:29,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [366468106] [2021-02-23 18:49:29,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:29,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:49:29,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921319565] [2021-02-23 18:49:29,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:49:29,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:29,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:49:29,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:49:29,457 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2021-02-23 18:49:29,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:29,609 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2021-02-23 18:49:29,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:49:29,611 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2021-02-23 18:49:29,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:29,620 INFO L225 Difference]: With dead ends: 40 [2021-02-23 18:49:29,621 INFO L226 Difference]: Without dead ends: 22 [2021-02-23 18:49:29,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:49:29,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-02-23 18:49:29,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-02-23 18:49:29,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-02-23 18:49:29,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-02-23 18:49:29,686 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 20 [2021-02-23 18:49:29,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:29,687 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-02-23 18:49:29,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:49:29,687 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-02-23 18:49:29,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-23 18:49:29,689 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:29,689 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] [2021-02-23 18:49:29,690 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:49:29,690 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:29,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:29,691 INFO L82 PathProgramCache]: Analyzing trace with hash -113607318, now seen corresponding path program 1 times [2021-02-23 18:49:29,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:29,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413030478] [2021-02-23 18:49:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:29,707 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:29,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:29,855 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:29,856 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:29,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:29,859 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:29,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:29,865 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:29,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:29,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:29,887 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:29,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:29,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:29,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:29,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:29,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:29,943 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 18:49:29,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413030478] [2021-02-23 18:49:29,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:29,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 18:49:29,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518509528] [2021-02-23 18:49:29,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 18:49:29,946 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:29,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 18:49:29,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:49:29,948 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2021-02-23 18:49:30,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:30,215 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-02-23 18:49:30,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:49:30,216 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2021-02-23 18:49:30,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:30,218 INFO L225 Difference]: With dead ends: 29 [2021-02-23 18:49:30,219 INFO L226 Difference]: Without dead ends: 24 [2021-02-23 18:49:30,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-23 18:49:30,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-02-23 18:49:30,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-02-23 18:49:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2021-02-23 18:49:30,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-02-23 18:49:30,248 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2021-02-23 18:49:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:30,249 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-02-23 18:49:30,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 18:49:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-02-23 18:49:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-23 18:49:30,253 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:49:30,253 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] [2021-02-23 18:49:30,254 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:49:30,254 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:49:30,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:49:30,255 INFO L82 PathProgramCache]: Analyzing trace with hash -905446871, now seen corresponding path program 1 times [2021-02-23 18:49:30,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:49:30,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407716719] [2021-02-23 18:49:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:49:30,852 WARN L202 SmtUtils]: Spent 580.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2021-02-23 18:49:30,870 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:49:30,873 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:49:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:30,932 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:30,933 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:30,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:30,935 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:49:30,953 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size [2021-02-23 18:49:30,955 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.3 percent of original size 26 [2021-02-23 18:49:30,994 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:30,995 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:31,006 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:31,007 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 18:49:31,019 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:31,020 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:31,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:49:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:49:31,073 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:49:31,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:49:31,077 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 18:49:31,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407716719] [2021-02-23 18:49:31,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:49:31,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 18:49:31,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761361265] [2021-02-23 18:49:31,079 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 18:49:31,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:49:31,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 18:49:31,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 18:49:31,081 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 7 states. [2021-02-23 18:49:31,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:49:31,312 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-02-23 18:49:31,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 18:49:31,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2021-02-23 18:49:31,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:49:31,313 INFO L225 Difference]: With dead ends: 24 [2021-02-23 18:49:31,313 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 18:49:31,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-02-23 18:49:31,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 18:49:31,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 18:49:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 18:49:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 18:49:31,315 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2021-02-23 18:49:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:49:31,316 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 18:49:31,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 18:49:31,316 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 18:49:31,316 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 18:49:31,317 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:49:31,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 18:49:31,819 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 18:49:31,819 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 18:49:31,820 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 18:49:31,820 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-23 18:49:31,820 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-23 18:49:31,820 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:49:31,820 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-23 18:49:31,821 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-23 18:49:31,821 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-23 18:49:31,821 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|)) [2021-02-23 18:49:31,823 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-23 18:49:31,824 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-23 18:49:31,824 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:49:31,824 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-23 18:49:31,824 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 18:49:31,824 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 18:49:31,824 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-23 18:49:31,825 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 13 22) the Hoare annotation is: true [2021-02-23 18:49:31,825 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 13 22) the Hoare annotation is: true [2021-02-23 18:49:31,825 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-23 18:49:31,825 INFO L185 CegarLoopUtils]: At program point L15(line 15) the Hoare annotation is: (= main_~x~0 0) [2021-02-23 18:49:31,826 INFO L185 CegarLoopUtils]: At program point L17-2(lines 17 19) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-23 18:49:31,826 INFO L185 CegarLoopUtils]: At program point L15-1(line 15) the Hoare annotation is: (= main_~x~0 0) [2021-02-23 18:49:31,826 INFO L185 CegarLoopUtils]: At program point L17-3(lines 17 19) the Hoare annotation is: (or (let ((.cse0 (div main_~x~0 2))) (and (< 0 .cse0) (<= main_~x~0 (* 2 .cse0)))) (= main_~x~0 0)) [2021-02-23 18:49:31,826 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 13 22) the Hoare annotation is: true [2021-02-23 18:49:31,827 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2021-02-23 18:49:31,827 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2021-02-23 18:49:31,827 INFO L185 CegarLoopUtils]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:49:31,827 INFO L185 CegarLoopUtils]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-23 18:49:31,827 INFO L185 CegarLoopUtils]: At program point L8-1(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:49:31,827 INFO L192 CegarLoopUtils]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2021-02-23 18:49:31,828 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-23 18:49:31,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:49:31 BoogieIcfgContainer [2021-02-23 18:49:31,850 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:49:31,854 INFO L168 Benchmark]: Toolchain (without parser) took 3937.51 ms. Allocated memory was 176.2 MB in the beginning and 234.9 MB in the end (delta: 58.7 MB). Free memory was 150.6 MB in the beginning and 107.1 MB in the end (delta: 43.6 MB). Peak memory consumption was 103.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:49:31,855 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 176.2 MB. Free memory is still 159.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:49:31,857 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.64 ms. Allocated memory is still 176.2 MB. Free memory was 149.4 MB in the beginning and 140.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 18:49:31,865 INFO L168 Benchmark]: Boogie Preprocessor took 59.58 ms. Allocated memory is still 176.2 MB. Free memory was 140.3 MB in the beginning and 138.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:49:31,866 INFO L168 Benchmark]: RCFGBuilder took 539.74 ms. Allocated memory is still 176.2 MB. Free memory was 138.8 MB in the beginning and 153.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:49:31,867 INFO L168 Benchmark]: TraceAbstraction took 2921.35 ms. Allocated memory was 176.2 MB in the beginning and 234.9 MB in the end (delta: 58.7 MB). Free memory was 153.1 MB in the beginning and 107.1 MB in the end (delta: 46.0 MB). Peak memory consumption was 105.7 MB. Max. memory is 8.0 GB. [2021-02-23 18:49:31,880 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 176.2 MB. Free memory is still 159.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 389.64 ms. Allocated memory is still 176.2 MB. Free memory was 149.4 MB in the beginning and 140.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 59.58 ms. Allocated memory is still 176.2 MB. Free memory was 140.3 MB in the beginning and 138.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 539.74 ms. Allocated memory is still 176.2 MB. Free memory was 138.8 MB in the beginning and 153.5 MB in the end (delta: -14.7 MB). Peak memory consumption was 11.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2921.35 ms. Allocated memory was 176.2 MB in the beginning and 234.9 MB in the end (delta: 58.7 MB). Free memory was 153.1 MB in the beginning and 107.1 MB in the end (delta: 46.0 MB). Peak memory consumption was 105.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 17]: Loop Invariant Derived loop invariant: (0 < x / 2 && x <= 2 * (x / 2)) || x == 0 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 35 SDslu, 99 SDs, 0 SdLazy, 84 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 43 PreInvPairs, 55 NumberOfFragments, 124 HoareAnnotationTreeSize, 43 FomulaSimplifications, 132 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 29 FomulaSimplificationsInter, 476 FormulaSimplificationTreeSizeReductionInter, 0.3s 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...