/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/nest-if3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:46:12,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:46:12,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:46:12,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-06 22:46:12,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:46:12,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:46:12,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:46:12,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:46:12,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:46:12,108 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:46:12,116 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:46:12,125 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:46:12,127 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:46:12,130 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:46:12,131 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:46:12,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:46:12,143 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-06 22:46:12,155 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:46:12,156 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:46:12,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:46:12,157 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:46:12,224 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:46:12,224 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:46:12,228 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:46:12,228 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:46:12,229 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:46:12,229 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:46:12,229 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:46:12,229 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:46:12,229 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:46:12,230 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:46:12,231 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:46:12,232 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:46:12,232 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:46:12,232 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:46:12,232 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:46:12,232 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:46:12,233 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:46:12,233 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:46:12,233 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:46:12,233 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:46:12,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:46:12,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:46:12,234 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:46:12,234 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:46:12,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:46:12,235 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:46:12,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:46:12,235 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:46:12,235 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:46:12,235 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:46:12,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:46:12,651 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:46:12,654 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:46:12,656 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:46:12,657 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:46:12,658 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nest-if3.i [2020-11-06 22:46:12,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbd0ad4d7/3f5cc748f0994872b12e75be2c801b75/FLAGf3943fbd8 [2020-11-06 22:46:13,358 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:46:13,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nest-if3.i [2020-11-06 22:46:13,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbd0ad4d7/3f5cc748f0994872b12e75be2c801b75/FLAGf3943fbd8 [2020-11-06 22:46:13,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bbd0ad4d7/3f5cc748f0994872b12e75be2c801b75 [2020-11-06 22:46:13,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:46:13,733 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:46:13,734 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:13,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:46:13,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:46:13,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50e1a8fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13, skipping insertion in model container [2020-11-06 22:46:13,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,751 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:46:13,767 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:46:13,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:13,940 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:46:13,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:46:13,977 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:46:13,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13 WrapperNode [2020-11-06 22:46:13,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:46:13,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:46:13,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:46:13,980 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:46:13,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:13,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:14,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:14,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:14,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:14,015 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:14,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (1/1) ... [2020-11-06 22:46:14,020 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:46:14,021 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:46:14,021 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:46:14,021 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:46:14,022 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (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 [2020-11-06 22:46:14,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:46:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:46:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:46:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-06 22:46:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:46:14,094 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:46:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:46:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:46:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:46:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:46:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:46:14,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:46:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-06 22:46:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:46:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:46:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:46:14,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:46:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:46:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:46:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:46:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:46:14,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:46:14,622 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:46:14,622 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-11-06 22:46:14,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:14 BoogieIcfgContainer [2020-11-06 22:46:14,625 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:46:14,628 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:46:14,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:46:14,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:46:14,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:46:13" (1/3) ... [2020-11-06 22:46:14,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0f3223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:14, skipping insertion in model container [2020-11-06 22:46:14,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:46:13" (2/3) ... [2020-11-06 22:46:14,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a0f3223 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:46:14, skipping insertion in model container [2020-11-06 22:46:14,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:46:14" (3/3) ... [2020-11-06 22:46:14,638 INFO L111 eAbstractionObserver]: Analyzing ICFG nest-if3.i [2020-11-06 22:46:14,656 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:46:14,660 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:46:14,685 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:46:14,732 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:46:14,732 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:46:14,732 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:46:14,732 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:46:14,732 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:46:14,733 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:46:14,733 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:46:14,733 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:46:14,758 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-11-06 22:46:14,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-06 22:46:14,769 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:46:14,771 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:46:14,771 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:46:14,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:46:14,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1962925561, now seen corresponding path program 1 times [2020-11-06 22:46:14,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:46:14,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809919647] [2020-11-06 22:46:14,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:46:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:15,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:46:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:46:15,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:46:15,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809919647] [2020-11-06 22:46:15,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:46:15,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 22:46:15,262 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253036073] [2020-11-06 22:46:15,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:46:15,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:46:15,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:46:15,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:46:15,298 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2020-11-06 22:46:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:46:15,639 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2020-11-06 22:46:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:46:15,641 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-11-06 22:46:15,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:46:15,648 INFO L225 Difference]: With dead ends: 51 [2020-11-06 22:46:15,648 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:46:15,652 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 [2020-11-06 22:46:15,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:46:15,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:46:15,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:46:15,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:46:15,681 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-06 22:46:15,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:46:15,681 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:46:15,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:46:15,682 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:46:15,682 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:46:15,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:46:15,684 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:46:15,859 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2020-11-06 22:46:15,860 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 12) the Hoare annotation is: true [2020-11-06 22:46:15,860 INFO L266 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-11-06 22:46:15,860 INFO L266 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-06 22:46:15,860 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-06 22:46:15,860 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:15,861 INFO L262 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)|)) [2020-11-06 22:46:15,861 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:15,861 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:46:15,861 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:46:15,861 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:46:15,861 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:46:15,862 INFO L266 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-11-06 22:46:15,862 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:15,862 INFO L266 CegarLoopResult]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:15,862 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2020-11-06 22:46:15,863 INFO L262 CegarLoopResult]: At program point L33(line 33) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2020-11-06 22:46:15,863 INFO L266 CegarLoopResult]: For program point L33-1(lines 32 34) no Hoare annotation was computed. [2020-11-06 22:46:15,863 INFO L266 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-11-06 22:46:15,864 INFO L266 CegarLoopResult]: For program point L31-2(lines 31 37) no Hoare annotation was computed. [2020-11-06 22:46:15,864 INFO L262 CegarLoopResult]: At program point L31-3(lines 31 37) the Hoare annotation is: (<= 1 main_~l~0) [2020-11-06 22:46:15,865 INFO L266 CegarLoopResult]: For program point L31-4(lines 24 38) no Hoare annotation was computed. [2020-11-06 22:46:15,865 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 24 38) no Hoare annotation was computed. [2020-11-06 22:46:15,865 INFO L266 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-11-06 22:46:15,865 INFO L262 CegarLoopResult]: At program point L32-2(lines 32 34) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2020-11-06 22:46:15,866 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2020-11-06 22:46:15,866 INFO L266 CegarLoopResult]: For program point L32-3(lines 32 34) no Hoare annotation was computed. [2020-11-06 22:46:15,866 INFO L266 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-11-06 22:46:15,867 INFO L266 CegarLoopResult]: For program point L35(lines 35 36) no Hoare annotation was computed. [2020-11-06 22:46:15,867 INFO L266 CegarLoopResult]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:46:15,868 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2020-11-06 22:46:15,868 INFO L266 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2020-11-06 22:46:15,868 INFO L262 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-06 22:46:15,869 INFO L266 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-06 22:46:15,869 INFO L266 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-11-06 22:46:15,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:46:15 BoogieIcfgContainer [2020-11-06 22:46:15,886 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:46:15,889 INFO L168 Benchmark]: Toolchain (without parser) took 2160.63 ms. Allocated memory is still 162.5 MB. Free memory was 138.9 MB in the beginning and 116.8 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:15,890 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 101.3 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:46:15,892 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.59 ms. Allocated memory is still 162.5 MB. Free memory was 138.3 MB in the beginning and 128.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:15,893 INFO L168 Benchmark]: Boogie Preprocessor took 40.10 ms. Allocated memory is still 162.5 MB. Free memory was 128.7 MB in the beginning and 127.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:15,894 INFO L168 Benchmark]: RCFGBuilder took 604.63 ms. Allocated memory is still 162.5 MB. Free memory was 127.2 MB in the beginning and 145.3 MB in the end (delta: -18.1 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:15,895 INFO L168 Benchmark]: TraceAbstraction took 1258.27 ms. Allocated memory is still 162.5 MB. Free memory was 144.7 MB in the beginning and 116.8 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:46:15,899 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 125.8 MB. Free memory was 101.3 MB in the beginning and 101.3 MB in the end (delta: 1.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.59 ms. Allocated memory is still 162.5 MB. Free memory was 138.3 MB in the beginning and 128.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.10 ms. Allocated memory is still 162.5 MB. Free memory was 128.7 MB in the beginning and 127.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 604.63 ms. Allocated memory is still 162.5 MB. Free memory was 127.2 MB in the beginning and 145.3 MB in the end (delta: -18.1 MB). Peak memory consumption was 17.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1258.27 ms. Allocated memory is still 162.5 MB. Free memory was 144.7 MB in the beginning and 116.8 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.3 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: 31]: Loop Invariant Derived loop invariant: 1 <= l - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 <= l && 1 <= i - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 39 SDslu, 38 SDs, 0 SdLazy, 83 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 12 PreInvPairs, 16 NumberOfFragments, 50 HoareAnnotationTreeSize, 12 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 129 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 17 NumberOfCodeBlocks, 17 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 896 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...