/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/ldv-regression/oomInt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:34:06,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:34:06,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:34:06,089 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:34:06,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:34:06,119 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:34:06,121 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:34:06,122 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:34:06,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:34:06,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:34:06,125 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:34:06,128 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:34:06,129 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:34:06,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:34:06,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:34:06,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:34:06,141 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:34:06,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:34:06,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:34:06,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:34:06,154 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:34:06,166 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:34:06,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:34:06,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:34:06,168 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:34:06,168 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:34:06,168 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:34:06,168 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:34:06,169 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:34:06,169 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:34:06,169 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:34:06,169 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:34:06,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:34:06,169 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:34:06,170 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:34:06,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:34:06,170 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:34:06,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:34:06,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:34:06,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:34:06,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:34:06,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:34:06,171 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:34:06,171 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:34:06,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:34:06,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:34:06,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:34:06,589 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:34:06,589 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:34:06,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/oomInt.i [2020-10-23 20:34:06,677 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7188d6e7/703221ef25964496b617d34d1720797a/FLAG46be34d2b [2020-10-23 20:34:07,301 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:34:07,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/oomInt.i [2020-10-23 20:34:07,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7188d6e7/703221ef25964496b617d34d1720797a/FLAG46be34d2b [2020-10-23 20:34:07,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7188d6e7/703221ef25964496b617d34d1720797a [2020-10-23 20:34:07,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:34:07,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:34:07,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:34:07,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:34:07,686 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:34:07,687 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:34:07" (1/1) ... [2020-10-23 20:34:07,691 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53234b13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:07, skipping insertion in model container [2020-10-23 20:34:07,691 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:34:07" (1/1) ... [2020-10-23 20:34:07,700 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:34:07,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:34:07,865 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:34:07,875 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:34:07,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:34:07,906 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:34:07,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:07 WrapperNode [2020-10-23 20:34:07,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:34:07,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:34:07,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:34:07,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:34:07,921 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:07" (1/1) ... [2020-10-23 20:34:07,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:07" (1/1) ... [2020-10-23 20:34:07,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:07" (1/1) ... [2020-10-23 20:34:07,928 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:07" (1/1) ... [2020-10-23 20:34:07,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:07" (1/1) ... [2020-10-23 20:34:07,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:07" (1/1) ... [2020-10-23 20:34:07,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:07" (1/1) ... [2020-10-23 20:34:07,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:34:07,939 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:34:07,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:34:07,940 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:34:07,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:07" (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 [2020-10-23 20:34:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:34:08,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:34:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:34:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-23 20:34:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure abs_int [2020-10-23 20:34:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure firstFunction [2020-10-23 20:34:08,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:34:08,011 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:34:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:34:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:34:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:34:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-23 20:34:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure abs_int [2020-10-23 20:34:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure firstFunction [2020-10-23 20:34:08,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:34:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:34:08,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:34:08,014 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:34:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:34:08,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:34:08,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:34:08,315 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:34:08,315 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:34:08,317 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:34:08 BoogieIcfgContainer [2020-10-23 20:34:08,317 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:34:08,319 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:34:08,319 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:34:08,324 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:34:08,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:34:07" (1/3) ... [2020-10-23 20:34:08,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f7d722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:34:08, skipping insertion in model container [2020-10-23 20:34:08,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:34:07" (2/3) ... [2020-10-23 20:34:08,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44f7d722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:34:08, skipping insertion in model container [2020-10-23 20:34:08,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:34:08" (3/3) ... [2020-10-23 20:34:08,328 INFO L111 eAbstractionObserver]: Analyzing ICFG oomInt.i [2020-10-23 20:34:08,340 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:34:08,346 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:34:08,386 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:34:08,440 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:34:08,440 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:34:08,440 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:34:08,441 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:34:08,441 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:34:08,441 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:34:08,441 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:34:08,441 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:34:08,476 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-10-23 20:34:08,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 20:34:08,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:34:08,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:34:08,499 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:34:08,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:34:08,515 INFO L82 PathProgramCache]: Analyzing trace with hash -893757991, now seen corresponding path program 1 times [2020-10-23 20:34:08,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:34:08,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1096851961] [2020-10-23 20:34:08,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:34:08,634 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:34:08,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:34:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:34:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:34:09,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1096851961] [2020-10-23 20:34:09,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:34:09,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-23 20:34:09,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295728482] [2020-10-23 20:34:09,119 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 20:34:09,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:34:09,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 20:34:09,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-23 20:34:09,137 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 9 states. [2020-10-23 20:34:09,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:34:09,611 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2020-10-23 20:34:09,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 20:34:09,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2020-10-23 20:34:09,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:34:09,622 INFO L225 Difference]: With dead ends: 68 [2020-10-23 20:34:09,623 INFO L226 Difference]: Without dead ends: 29 [2020-10-23 20:34:09,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-10-23 20:34:09,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-23 20:34:09,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-23 20:34:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-23 20:34:09,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 28 transitions. [2020-10-23 20:34:09,670 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 28 transitions. Word has length 28 [2020-10-23 20:34:09,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:34:09,670 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 28 transitions. [2020-10-23 20:34:09,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 20:34:09,671 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 28 transitions. [2020-10-23 20:34:09,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-23 20:34:09,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:34:09,672 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:34:09,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:34:09,673 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:34:09,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:34:09,674 INFO L82 PathProgramCache]: Analyzing trace with hash 65472025, now seen corresponding path program 1 times [2020-10-23 20:34:09,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:34:09,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209251648] [2020-10-23 20:34:09,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:34:09,677 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:34:09,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:34:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-23 20:34:09,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:34:09,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:34:09,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209251648] [2020-10-23 20:34:09,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:34:09,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:34:09,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189787590] [2020-10-23 20:34:09,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:34:09,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:34:09,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:34:09,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:34:09,792 INFO L87 Difference]: Start difference. First operand 29 states and 28 transitions. Second operand 5 states. [2020-10-23 20:34:09,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:34:09,922 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2020-10-23 20:34:09,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 20:34:09,923 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-10-23 20:34:09,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:34:09,924 INFO L225 Difference]: With dead ends: 29 [2020-10-23 20:34:09,924 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 20:34:09,926 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:34:09,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 20:34:09,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 20:34:09,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 20:34:09,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 20:34:09,927 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-10-23 20:34:09,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:34:09,927 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 20:34:09,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:34:09,927 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 20:34:09,928 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 20:34:09,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:34:09,930 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 20:34:10,559 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 16 [2020-10-23 20:34:10,623 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-23 20:34:10,623 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 20:34:10,624 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-23 20:34:10,624 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-23 20:34:10,625 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-23 20:34:10,625 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-23 20:34:10,625 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:34:10,626 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-23 20:34:10,626 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-23 20:34:10,626 INFO L277 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-10-23 20:34:10,626 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-23 20:34:10,626 INFO L270 CegarLoopResult]: 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|)) [2020-10-23 20:34:10,627 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-23 20:34:10,627 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-23 20:34:10,627 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:34:10,627 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-23 20:34:10,627 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-23 20:34:10,627 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 20:34:10,628 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-23 20:34:10,628 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 35 38) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-10-23 20:34:10,633 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 35 38) the Hoare annotation is: true [2020-10-23 20:34:10,633 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 35 38) the Hoare annotation is: true [2020-10-23 20:34:10,634 INFO L270 CegarLoopResult]: At program point abs_intEXIT(lines 18 27) the Hoare annotation is: (let ((.cse0 (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)))) (or (and .cse0 (<= 3 |abs_int_#res|)) (and (not (= (+ |abs_int_#in~i| 3) 0)) .cse0))) [2020-10-23 20:34:10,634 INFO L270 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (not (= (+ |abs_int_#in~i| 3) 0)) (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0))) [2020-10-23 20:34:10,634 INFO L270 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)) [2020-10-23 20:34:10,634 INFO L270 CegarLoopResult]: At program point L20(lines 20 26) the Hoare annotation is: (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)) [2020-10-23 20:34:10,634 INFO L277 CegarLoopResult]: At program point abs_intENTRY(lines 18 27) the Hoare annotation is: true [2020-10-23 20:34:10,635 INFO L270 CegarLoopResult]: At program point abs_intFINAL(lines 18 27) the Hoare annotation is: (let ((.cse0 (or (= |abs_int_#in~i| abs_int_~i) (= (+ abs_int_~i 3) 0)))) (or (and .cse0 (<= 3 |abs_int_#res|)) (and (not (= (+ |abs_int_#in~i| 3) 0)) .cse0))) [2020-10-23 20:34:10,635 INFO L270 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (<= 1 ~p~0) [2020-10-23 20:34:10,635 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret7|)) [2020-10-23 20:34:10,635 INFO L270 CegarLoopResult]: At program point L31-1(line 31) the Hoare annotation is: (and (= ~p~0 |old(~p~0)|) (<= 1 |firstFunction_#t~ret7|)) [2020-10-23 20:34:10,635 INFO L270 CegarLoopResult]: At program point L31-2(line 31) the Hoare annotation is: (and (<= 1 |firstFunction_#t~ret7|) (<= 1 ~p~0)) [2020-10-23 20:34:10,636 INFO L270 CegarLoopResult]: At program point firstFunctionENTRY(lines 29 33) the Hoare annotation is: (= ~p~0 |old(~p~0)|) [2020-10-23 20:34:10,636 INFO L277 CegarLoopResult]: At program point firstFunctionFINAL(lines 29 33) the Hoare annotation is: true [2020-10-23 20:34:10,636 INFO L277 CegarLoopResult]: At program point firstFunctionEXIT(lines 29 33) the Hoare annotation is: true [2020-10-23 20:34:10,637 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 8 14) the Hoare annotation is: true [2020-10-23 20:34:10,637 INFO L270 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~i| 0) (not (<= 1 ~p~0))) [2020-10-23 20:34:10,637 INFO L270 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~i| 0) (not (<= 1 ~p~0))) [2020-10-23 20:34:10,637 INFO L270 CegarLoopResult]: 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))) [2020-10-23 20:34:10,637 INFO L270 CegarLoopResult]: 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))) [2020-10-23 20:34:10,638 INFO L270 CegarLoopResult]: 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))) [2020-10-23 20:34:10,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:34:10 BoogieIcfgContainer [2020-10-23 20:34:10,663 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:34:10,666 INFO L168 Benchmark]: Toolchain (without parser) took 2991.23 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.8 MB in the beginning and 142.7 MB in the end (delta: -11.9 MB). Peak memory consumption was 83.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:34:10,667 INFO L168 Benchmark]: CDTParser took 0.87 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 100.9 MB in the end (delta: 60.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:34:10,668 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.42 ms. Allocated memory is still 154.1 MB. Free memory was 130.2 MB in the beginning and 121.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:34:10,669 INFO L168 Benchmark]: Boogie Preprocessor took 30.16 ms. Allocated memory is still 154.1 MB. Free memory was 121.1 MB in the beginning and 119.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:34:10,670 INFO L168 Benchmark]: RCFGBuilder took 378.25 ms. Allocated memory is still 154.1 MB. Free memory was 119.6 MB in the beginning and 106.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:34:10,671 INFO L168 Benchmark]: TraceAbstraction took 2344.05 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 106.3 MB in the beginning and 142.7 MB in the end (delta: -36.4 MB). Peak memory consumption was 59.2 MB. Max. memory is 8.0 GB. [2020-10-23 20:34:10,676 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.87 ms. Allocated memory is still 125.8 MB. Free memory was 101.0 MB in the beginning and 100.9 MB in the end (delta: 60.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 227.42 ms. Allocated memory is still 154.1 MB. Free memory was 130.2 MB in the beginning and 121.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.16 ms. Allocated memory is still 154.1 MB. Free memory was 121.1 MB in the beginning and 119.8 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 378.25 ms. Allocated memory is still 154.1 MB. Free memory was 119.6 MB in the beginning and 106.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2344.05 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 106.3 MB in the beginning and 142.7 MB in the end (delta: -36.4 MB). Peak memory consumption was 59.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 18]: Procedure Contract for abs_int Derived contract for procedure abs_int: ((\old(i) == i || i + 3 == 0) && 3 <= \result) || (!(\old(i) + 3 == 0) && (\old(i) == i || 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: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 46 SDtfs, 42 SDslu, 170 SDs, 0 SdLazy, 127 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 41 LocationsWithAnnotation, 51 PreInvPairs, 73 NumberOfFragments, 234 HoareAnnotationTreeSize, 51 FomulaSimplifications, 24 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 41 FomulaSimplificationsInter, 559 FormulaSimplificationTreeSizeReductionInter, 0.5s 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...