/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/ldv-regression/test20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:26:38,804 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:26:38,809 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:26:38,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:26:38,867 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:26:38,868 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:26:38,870 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:26:38,873 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:26:38,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:26:38,877 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:26:38,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:26:38,880 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-10-23 18:26:38,936 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 [2020-10-23 18:26:38,963 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:26:38,964 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:26:38,965 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:26:38,966 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:26:38,966 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:26:38,966 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:26:38,966 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:26:38,967 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:26:38,967 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:26:38,967 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:26:38,967 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:26:38,968 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:26:38,968 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:26:38,968 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:26:38,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:26:38,969 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:26:38,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:26:38,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:26:38,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:26:38,970 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:26:38,970 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:26:38,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:26:38,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:26:38,971 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:26:38,971 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:26:38,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:26:38,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:26:38,972 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:26:38,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:26:38,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:26:39,443 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:26:39,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:26:39,482 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:26:39,484 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:26:39,484 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:26:39,485 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test20.c [2020-10-23 18:26:39,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74dc0c9dc/156f80525bfb4e79ae27ece2b04ab7d9/FLAG42c65036d [2020-10-23 18:26:40,154 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:26:40,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test20.c [2020-10-23 18:26:40,162 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74dc0c9dc/156f80525bfb4e79ae27ece2b04ab7d9/FLAG42c65036d [2020-10-23 18:26:40,525 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/74dc0c9dc/156f80525bfb4e79ae27ece2b04ab7d9 [2020-10-23 18:26:40,528 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:26:40,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:26:40,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:26:40,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:26:40,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:26:40,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:26:40" (1/1) ... [2020-10-23 18:26:40,550 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5efc2381 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:40, skipping insertion in model container [2020-10-23 18:26:40,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:26:40" (1/1) ... [2020-10-23 18:26:40,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:26:40,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:26:40,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:26:40,747 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:26:40,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:26:40,782 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:26:40,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:40 WrapperNode [2020-10-23 18:26:40,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:26:40,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:26:40,785 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:26:40,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:26:40,800 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:40" (1/1) ... [2020-10-23 18:26:40,801 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:40" (1/1) ... [2020-10-23 18:26:40,809 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:40" (1/1) ... [2020-10-23 18:26:40,810 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:40" (1/1) ... [2020-10-23 18:26:40,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:40" (1/1) ... [2020-10-23 18:26:40,818 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:40" (1/1) ... [2020-10-23 18:26:40,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:40" (1/1) ... [2020-10-23 18:26:40,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:26:40,823 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:26:40,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:26:40,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:26:40,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:40" (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 18:26:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:26:40,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:26:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:26:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2020-10-23 18:26:40,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:26:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:26:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:26:40,918 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:26:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:26:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2020-10-23 18:26:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:26:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:26:40,919 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:26:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:26:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:26:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:26:40,920 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:26:41,319 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:26:41,319 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 18:26:41,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:26:41 BoogieIcfgContainer [2020-10-23 18:26:41,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:26:41,326 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:26:41,326 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:26:41,331 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:26:41,331 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:26:40" (1/3) ... [2020-10-23 18:26:41,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449e3411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:26:41, skipping insertion in model container [2020-10-23 18:26:41,333 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:26:40" (2/3) ... [2020-10-23 18:26:41,333 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@449e3411 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:26:41, skipping insertion in model container [2020-10-23 18:26:41,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:26:41" (3/3) ... [2020-10-23 18:26:41,335 INFO L111 eAbstractionObserver]: Analyzing ICFG test20.c [2020-10-23 18:26:41,351 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:26:41,357 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:26:41,373 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:26:41,449 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:26:41,449 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:26:41,449 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:26:41,450 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:26:41,450 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:26:41,450 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:26:41,450 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:26:41,450 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:26:41,504 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-10-23 18:26:41,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-23 18:26:41,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:26:41,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:26:41,512 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:26:41,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:26:41,526 INFO L82 PathProgramCache]: Analyzing trace with hash -1209245262, now seen corresponding path program 1 times [2020-10-23 18:26:41,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:26:41,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029591850] [2020-10-23 18:26:41,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:26:41,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:41,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:26:41,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:26:41,940 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 18:26:41,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029591850] [2020-10-23 18:26:41,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:26:41,942 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:26:41,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106551058] [2020-10-23 18:26:41,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 18:26:41,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:26:41,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 18:26:41,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-23 18:26:41,969 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2020-10-23 18:26:42,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:26:42,206 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-10-23 18:26:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 18:26:42,209 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-23 18:26:42,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:26:42,216 INFO L225 Difference]: With dead ends: 28 [2020-10-23 18:26:42,216 INFO L226 Difference]: Without dead ends: 0 [2020-10-23 18:26:42,220 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:26:42,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-23 18:26:42,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-23 18:26:42,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-23 18:26:42,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-23 18:26:42,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-23 18:26:42,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:26:42,251 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-23 18:26:42,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 18:26:42,251 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-23 18:26:42,251 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-23 18:26:42,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:26:42,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-23 18:26:42,385 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-23 18:26:42,386 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-23 18:26:42,386 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-23 18:26:42,386 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-23 18:26:42,386 INFO L274 CegarLoopResult]: For program point equalEXIT(lines 6 14) no Hoare annotation was computed. [2020-10-23 18:26:42,387 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-10-23 18:26:42,387 INFO L277 CegarLoopResult]: At program point equalENTRY(lines 6 14) the Hoare annotation is: true [2020-10-23 18:26:42,387 INFO L274 CegarLoopResult]: For program point equalFINAL(lines 6 14) no Hoare annotation was computed. [2020-10-23 18:26:42,387 INFO L270 CegarLoopResult]: At program point L8(lines 6 14) the Hoare annotation is: (or (= |equal_#in~a.base| |equal_#in~b.base|) (= |~#a~0.base| |~#b~0.base|)) [2020-10-23 18:26:42,387 INFO L274 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-10-23 18:26:42,387 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:26:42,388 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-23 18:26:42,388 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:26:42,388 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-23 18:26:42,389 INFO L270 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (not (= |~#b~0.base| |~#a~0.base|)) [2020-10-23 18:26:42,389 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-23 18:26:42,389 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-23 18:26:42,389 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 18 21) the Hoare annotation is: true [2020-10-23 18:26:42,389 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 18 21) no Hoare annotation was computed. [2020-10-23 18:26:42,389 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 18 21) no Hoare annotation was computed. [2020-10-23 18:26:42,390 INFO L274 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-10-23 18:26:42,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:26:42 BoogieIcfgContainer [2020-10-23 18:26:42,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:26:42,411 INFO L168 Benchmark]: Toolchain (without parser) took 1878.88 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 70.9 MB in the end (delta: 55.7 MB). Peak memory consumption was 55.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:26:42,412 INFO L168 Benchmark]: CDTParser took 1.56 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:26:42,413 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 117.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 18:26:42,414 INFO L168 Benchmark]: Boogie Preprocessor took 37.38 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:26:42,415 INFO L168 Benchmark]: RCFGBuilder took 499.56 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 103.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 18:26:42,416 INFO L168 Benchmark]: TraceAbstraction took 1081.87 ms. Allocated memory is still 151.0 MB. Free memory was 102.8 MB in the beginning and 70.9 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 MB. Max. memory is 8.0 GB. [2020-10-23 18:26:42,420 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.56 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.23 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 117.0 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.38 ms. Allocated memory is still 151.0 MB. Free memory was 117.0 MB in the beginning and 115.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 499.56 ms. Allocated memory is still 151.0 MB. Free memory was 115.7 MB in the beginning and 103.1 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1081.87 ms. Allocated memory is still 151.0 MB. Free memory was 102.8 MB in the beginning and 70.9 MB in the end (delta: 31.9 MB). Peak memory consumption was 31.9 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 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: a == b || a == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 16 SDslu, 14 SDs, 0 SdLazy, 18 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 58 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 107 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 621 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...