/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 02:24:50,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 02:24:50,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 02:24:50,264 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 02:24:50,299 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 02:24:50,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 02:24:50,304 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 02:24:50,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 02:24:50,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 02:24:50,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 02:24:50,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 02:24:50,322 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 02:24:50,355 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 02:24:50,357 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 02:24:50,358 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 02:24:50,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 02:24:50,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 02:24:50,379 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 02:24:50,380 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 02:24:50,381 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 02:24:50,382 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 02:24:50,401 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 02:24:50,401 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 02:24:50,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 02:24:50,407 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 02:24:50,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 02:24:50,407 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 02:24:50,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 02:24:50,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 02:24:50,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 02:24:50,408 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 02:24:50,409 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 02:24:50,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 02:24:50,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 02:24:50,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 02:24:50,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 02:24:50,411 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 02:24:50,411 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 02:24:50,411 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 02:24:50,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 02:24:50,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 02:24:50,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 02:24:50,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 02:24:50,419 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 02:24:50,790 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 02:24:50,821 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 02:24:50,824 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 02:24:50,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 02:24:50,826 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 02:24:50,827 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-2.i [2020-10-24 02:24:50,901 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/501695051/d83f997922964fe592f5f4eff53d15de/FLAG88c2ee994 [2020-10-24 02:24:51,461 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 02:24:51,462 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-2.i [2020-10-24 02:24:51,469 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/501695051/d83f997922964fe592f5f4eff53d15de/FLAG88c2ee994 [2020-10-24 02:24:51,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/501695051/d83f997922964fe592f5f4eff53d15de [2020-10-24 02:24:51,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 02:24:51,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 02:24:51,859 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 02:24:51,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 02:24:51,863 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 02:24:51,864 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:51" (1/1) ... [2020-10-24 02:24:51,871 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b374bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:51, skipping insertion in model container [2020-10-24 02:24:51,871 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:24:51" (1/1) ... [2020-10-24 02:24:51,880 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 02:24:51,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 02:24:52,078 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:24:52,088 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 02:24:52,106 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 02:24:52,123 INFO L208 MainTranslator]: Completed translation [2020-10-24 02:24:52,123 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:52 WrapperNode [2020-10-24 02:24:52,124 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 02:24:52,125 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 02:24:52,125 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 02:24:52,125 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 02:24:52,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:52" (1/1) ... [2020-10-24 02:24:52,138 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:52" (1/1) ... [2020-10-24 02:24:52,146 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:52" (1/1) ... [2020-10-24 02:24:52,146 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:52" (1/1) ... [2020-10-24 02:24:52,152 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:52" (1/1) ... [2020-10-24 02:24:52,156 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:52" (1/1) ... [2020-10-24 02:24:52,157 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:52" (1/1) ... [2020-10-24 02:24:52,159 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 02:24:52,160 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 02:24:52,160 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 02:24:52,161 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 02:24:52,161 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:52" (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 [2020-10-24 02:24:52,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 02:24:52,245 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 02:24:52,245 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 02:24:52,246 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-24 02:24:52,246 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-24 02:24:52,246 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 02:24:52,246 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 02:24:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 02:24:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-24 02:24:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-24 02:24:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 02:24:52,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 02:24:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-24 02:24:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-24 02:24:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 02:24:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-24 02:24:52,248 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 02:24:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 02:24:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 02:24:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 02:24:52,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 02:24:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 02:24:52,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 02:24:52,647 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 02:24:52,648 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-24 02:24:52,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:52 BoogieIcfgContainer [2020-10-24 02:24:52,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 02:24:52,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 02:24:52,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 02:24:52,658 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 02:24:52,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:24:51" (1/3) ... [2020-10-24 02:24:52,659 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db66190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:52, skipping insertion in model container [2020-10-24 02:24:52,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:24:52" (2/3) ... [2020-10-24 02:24:52,660 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3db66190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:24:52, skipping insertion in model container [2020-10-24 02:24:52,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:24:52" (3/3) ... [2020-10-24 02:24:52,662 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_03-2.i [2020-10-24 02:24:52,674 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 02:24:52,679 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 02:24:52,720 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 02:24:52,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 02:24:52,755 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 02:24:52,755 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 02:24:52,755 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 02:24:52,756 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 02:24:52,756 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 02:24:52,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 02:24:52,756 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 02:24:52,775 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-24 02:24:52,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-24 02:24:52,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:24:52,790 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] [2020-10-24 02:24:52,791 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:24:52,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:24:52,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1521530793, now seen corresponding path program 1 times [2020-10-24 02:24:52,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:24:52,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062443660] [2020-10-24 02:24:52,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:24:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:53,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:24:53,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:53,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:24:53,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062443660] [2020-10-24 02:24:53,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:24:53,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-24 02:24:53,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502472365] [2020-10-24 02:24:53,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-24 02:24:53,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:24:53,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-24 02:24:53,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-24 02:24:53,238 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2020-10-24 02:24:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:24:53,725 INFO L93 Difference]: Finished difference Result 62 states and 72 transitions. [2020-10-24 02:24:53,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:24:53,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-24 02:24:53,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:24:53,735 INFO L225 Difference]: With dead ends: 62 [2020-10-24 02:24:53,736 INFO L226 Difference]: Without dead ends: 28 [2020-10-24 02:24:53,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-24 02:24:53,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-24 02:24:53,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-24 02:24:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-24 02:24:53,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2020-10-24 02:24:53,784 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 25 [2020-10-24 02:24:53,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:24:53,785 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2020-10-24 02:24:53,785 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-24 02:24:53,786 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2020-10-24 02:24:53,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-24 02:24:53,787 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 02:24:53,787 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] [2020-10-24 02:24:53,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 02:24:53,788 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 02:24:53,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 02:24:53,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1135588651, now seen corresponding path program 1 times [2020-10-24 02:24:53,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 02:24:53,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [99496846] [2020-10-24 02:24:53,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 02:24:53,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:53,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 02:24:53,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 02:24:53,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 02:24:53,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [99496846] [2020-10-24 02:24:53,923 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 02:24:53,923 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-24 02:24:53,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255286150] [2020-10-24 02:24:53,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-24 02:24:53,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 02:24:53,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-24 02:24:53,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-24 02:24:53,927 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand 7 states. [2020-10-24 02:24:54,147 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-10-24 02:24:54,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 02:24:54,216 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-10-24 02:24:54,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-24 02:24:54,216 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-10-24 02:24:54,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 02:24:54,217 INFO L225 Difference]: With dead ends: 28 [2020-10-24 02:24:54,217 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 02:24:54,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-24 02:24:54,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 02:24:54,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 02:24:54,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 02:24:54,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 02:24:54,220 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-10-24 02:24:54,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 02:24:54,220 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 02:24:54,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-24 02:24:54,221 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 02:24:54,221 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 02:24:54,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 02:24:54,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 02:24:54,644 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 12) the Hoare annotation is: true [2020-10-24 02:24:54,645 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-10-24 02:24:54,645 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:24:54,645 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:24:54,645 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:24:54,646 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) the Hoare annotation is: true [2020-10-24 02:24:54,646 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:24:54,646 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 02:24:54,646 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2020-10-24 02:24:54,646 INFO L277 CegarLoopResult]: At program point L12(line 12) the Hoare annotation is: true [2020-10-24 02:24:54,646 INFO L277 CegarLoopResult]: At program point L12-1(line 12) the Hoare annotation is: true [2020-10-24 02:24:54,647 INFO L277 CegarLoopResult]: At program point L12-2(line 12) the Hoare annotation is: true [2020-10-24 02:24:54,647 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2020-10-24 02:24:54,647 INFO L277 CegarLoopResult]: At program point L12-3(line 12) the Hoare annotation is: true [2020-10-24 02:24:54,647 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:24:54,647 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 02:24:54,648 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 02:24:54,648 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 02:24:54,648 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 02:24:54,648 INFO L274 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-10-24 02:24:54,648 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-10-24 02:24:54,648 INFO L274 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:24:54,649 INFO L274 CegarLoopResult]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:24:54,649 INFO L274 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-10-24 02:24:54,649 INFO L270 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (< 0 main_~y~0) [2020-10-24 02:24:54,649 INFO L277 CegarLoopResult]: At program point L29(lines 29 33) the Hoare annotation is: true [2020-10-24 02:24:54,649 INFO L270 CegarLoopResult]: At program point L29-1(lines 29 33) the Hoare annotation is: (or (<= 100 main_~x~0) (<= main_~y~0 0)) [2020-10-24 02:24:54,650 INFO L277 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-10-24 02:24:54,650 INFO L277 CegarLoopResult]: At program point L27-1(line 27) the Hoare annotation is: true [2020-10-24 02:24:54,650 INFO L277 CegarLoopResult]: At program point L27-2(line 27) the Hoare annotation is: true [2020-10-24 02:24:54,650 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 25 36) the Hoare annotation is: true [2020-10-24 02:24:54,650 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 25 36) the Hoare annotation is: true [2020-10-24 02:24:54,650 INFO L277 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: true [2020-10-24 02:24:54,651 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 25 36) the Hoare annotation is: true [2020-10-24 02:24:54,651 INFO L277 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: true [2020-10-24 02:24:54,651 INFO L270 CegarLoopResult]: At program point L30-2(lines 30 32) the Hoare annotation is: (< 0 main_~y~0) [2020-10-24 02:24:54,651 INFO L277 CegarLoopResult]: At program point L28-1(line 28) the Hoare annotation is: true [2020-10-24 02:24:54,651 INFO L277 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-10-24 02:24:54,651 INFO L277 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-10-24 02:24:54,652 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:24:54,652 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-10-24 02:24:54,652 INFO L270 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:24:54,652 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:24:54,652 INFO L270 CegarLoopResult]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-10-24 02:24:54,652 INFO L270 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-24 02:24:54,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:24:54 BoogieIcfgContainer [2020-10-24 02:24:54,670 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 02:24:54,673 INFO L168 Benchmark]: Toolchain (without parser) took 2825.95 ms. Allocated memory was 159.4 MB in the beginning and 209.7 MB in the end (delta: 50.3 MB). Free memory was 135.7 MB in the beginning and 126.5 MB in the end (delta: 9.3 MB). Peak memory consumption was 60.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:54,674 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 02:24:54,675 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.31 ms. Allocated memory is still 159.4 MB. Free memory was 135.0 MB in the beginning and 125.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:54,676 INFO L168 Benchmark]: Boogie Preprocessor took 34.75 ms. Allocated memory is still 159.4 MB. Free memory was 125.7 MB in the beginning and 124.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:54,677 INFO L168 Benchmark]: RCFGBuilder took 489.98 ms. Allocated memory is still 159.4 MB. Free memory was 124.2 MB in the beginning and 109.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:54,678 INFO L168 Benchmark]: TraceAbstraction took 2017.64 ms. Allocated memory was 159.4 MB in the beginning and 209.7 MB in the end (delta: 50.3 MB). Free memory was 109.2 MB in the beginning and 126.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 33.9 MB. Max. memory is 8.0 GB. [2020-10-24 02:24:54,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 159.4 MB. Free memory is still 132.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.31 ms. Allocated memory is still 159.4 MB. Free memory was 135.0 MB in the beginning and 125.7 MB in the end (delta: 9.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.75 ms. Allocated memory is still 159.4 MB. Free memory was 125.7 MB in the beginning and 124.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 489.98 ms. Allocated memory is still 159.4 MB. Free memory was 124.2 MB in the beginning and 109.7 MB in the end (delta: 14.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2017.64 ms. Allocated memory was 159.4 MB in the beginning and 209.7 MB in the end (delta: 50.3 MB). Free memory was 109.2 MB in the beginning and 126.5 MB in the end (delta: -17.2 MB). Peak memory consumption was 33.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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 - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 0 < y - ProcedureContractResult [Line: 12]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 25]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 59 SDtfs, 50 SDslu, 101 SDs, 0 SdLazy, 132 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 58 PreInvPairs, 72 NumberOfFragments, 99 HoareAnnotationTreeSize, 58 FomulaSimplifications, 87 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 40 FomulaSimplificationsInter, 584 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 51 NumberOfCodeBlocks, 51 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 49 ConstructedInterpolants, 0 QuantifiedInterpolants, 2919 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...