/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/test16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:11:47,662 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:11:47,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:11:47,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 16:11:47,759 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:11:47,762 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:11:47,764 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:11:47,766 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:11:47,770 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:11:47,785 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:11:47,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:11:47,801 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:11:47,803 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:11:47,805 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:11:47,807 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:11:47,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:11:47,818 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:11:47,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:11:47,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:11:47,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:11:47,834 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 [2021-02-21 16:11:47,886 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:11:47,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:11:47,890 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:11:47,890 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:11:47,890 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:11:47,891 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:11:47,891 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:11:47,891 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:11:47,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:11:47,892 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:11:47,893 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:11:47,893 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:11:47,893 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:11:47,893 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:11:47,894 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:11:47,894 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:11:47,894 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:11:47,894 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:11:47,895 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:11:47,895 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:11:47,895 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:11:47,895 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:11:47,896 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:11:47,896 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:11:47,896 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:11:47,896 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:11:47,896 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:11:47,897 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:11:47,897 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:11:48,332 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:11:48,357 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:11:48,360 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:11:48,361 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:11:48,362 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:11:48,363 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test16.c [2021-02-21 16:11:48,441 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6e7a51a/4af7bd2849424864b0aa353e1b025f01/FLAG999f8796e [2021-02-21 16:11:49,000 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:11:49,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test16.c [2021-02-21 16:11:49,008 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6e7a51a/4af7bd2849424864b0aa353e1b025f01/FLAG999f8796e [2021-02-21 16:11:49,377 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e6e7a51a/4af7bd2849424864b0aa353e1b025f01 [2021-02-21 16:11:49,381 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:11:49,397 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:11:49,402 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:11:49,402 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:11:49,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:11:49,409 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:11:49" (1/1) ... [2021-02-21 16:11:49,411 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a6c25a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:49, skipping insertion in model container [2021-02-21 16:11:49,411 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:11:49" (1/1) ... [2021-02-21 16:11:49,421 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:11:49,447 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:11:49,658 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test16.c[379,392] [2021-02-21 16:11:49,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:11:49,690 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:11:49,706 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test16.c[379,392] [2021-02-21 16:11:49,709 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:11:49,729 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:11:49,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:49 WrapperNode [2021-02-21 16:11:49,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:11:49,734 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:11:49,735 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:11:49,735 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:11:49,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:49" (1/1) ... [2021-02-21 16:11:49,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:49" (1/1) ... [2021-02-21 16:11:49,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:49" (1/1) ... [2021-02-21 16:11:49,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:49" (1/1) ... [2021-02-21 16:11:49,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:49" (1/1) ... [2021-02-21 16:11:49,778 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:49" (1/1) ... [2021-02-21 16:11:49,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:49" (1/1) ... [2021-02-21 16:11:49,791 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:11:49,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:11:49,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:11:49,794 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:11:49,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:11:49,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:11:49,910 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:11:49,910 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:11:49,910 INFO L138 BoogieDeclarations]: Found implementation of procedure equal [2021-02-21 16:11:49,911 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:11:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:11:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:11:49,911 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:11:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:11:49,912 INFO L130 BoogieDeclarations]: Found specification of procedure equal [2021-02-21 16:11:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:11:49,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:11:49,914 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:11:49,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:11:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:11:49,916 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:11:49,917 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:11:50,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:11:50,310 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 16:11:50,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:11:50 BoogieIcfgContainer [2021-02-21 16:11:50,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:11:50,315 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:11:50,315 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:11:50,344 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:11:50,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:11:49" (1/3) ... [2021-02-21 16:11:50,349 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198ec1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:11:50, skipping insertion in model container [2021-02-21 16:11:50,349 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:11:49" (2/3) ... [2021-02-21 16:11:50,350 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198ec1d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:11:50, skipping insertion in model container [2021-02-21 16:11:50,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:11:50" (3/3) ... [2021-02-21 16:11:50,355 INFO L111 eAbstractionObserver]: Analyzing ICFG test16.c [2021-02-21 16:11:50,378 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:11:50,392 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:11:50,411 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:11:50,437 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:11:50,437 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:11:50,438 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:11:50,438 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:11:50,438 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:11:50,438 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:11:50,438 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:11:50,438 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:11:50,455 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-02-21 16:11:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-02-21 16:11:50,460 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:11:50,461 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:11:50,461 INFO L428 AbstractCegarLoop]: === Iteration 1 === [equalErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:11:50,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:11:50,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1702513608, now seen corresponding path program 1 times [2021-02-21 16:11:50,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:11:50,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908254632] [2021-02-21 16:11:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:11:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:11:50,721 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:50,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:11:50,740 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:50,741 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:11:50,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:50,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:11:50,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:50,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:11:50,789 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:50,790 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:11:50,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:11:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:11:50,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:11:50,938 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 16:11:50,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:11:50,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908254632] [2021-02-21 16:11:50,944 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:11:50,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:11:50,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675173493] [2021-02-21 16:11:50,950 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 16:11:50,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:11:50,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 16:11:50,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 16:11:50,968 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 7 states. [2021-02-21 16:11:51,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:11:51,312 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-02-21 16:11:51,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 16:11:51,314 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2021-02-21 16:11:51,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:11:51,321 INFO L225 Difference]: With dead ends: 25 [2021-02-21 16:11:51,321 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:11:51,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-02-21 16:11:51,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:11:51,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:11:51,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:11:51,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:11:51,352 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-02-21 16:11:51,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:11:51,352 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:11:51,352 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 16:11:51,353 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:11:51,353 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:11:51,353 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:11:51,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:11:51,601 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 16:11:51,602 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 16:11:51,602 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 16:11:51,602 INFO L189 CegarLoopUtils]: For program point equalEXIT(lines 6 14) no Hoare annotation was computed. [2021-02-21 16:11:51,602 INFO L192 CegarLoopUtils]: At program point equalENTRY(lines 6 14) the Hoare annotation is: true [2021-02-21 16:11:51,602 INFO L189 CegarLoopUtils]: For program point equalFINAL(lines 6 14) no Hoare annotation was computed. [2021-02-21 16:11:51,602 INFO L185 CegarLoopUtils]: At program point L8(lines 6 14) the Hoare annotation is: (or (not (= (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|) (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|))) (= |~#a~0.base| |~#b~0.base|) (not (= (select (select |#memory_int| |equal_#in~a.base|) |equal_#in~a.offset|) (select (select |#memory_int| |equal_#in~b.base|) |equal_#in~b.offset|)))) [2021-02-21 16:11:51,603 INFO L189 CegarLoopUtils]: For program point L7(lines 7 9) no Hoare annotation was computed. [2021-02-21 16:11:51,603 INFO L189 CegarLoopUtils]: For program point equalErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2021-02-21 16:11:51,603 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:11:51,603 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~pa~0.base |old(~pa~0.base)|) (= ~pa~0.offset |old(~pa~0.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)|) (= ~pb~0.base |old(~pb~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~pb~0.offset |old(~pb~0.offset)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-21 16:11:51,604 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:11:51,604 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:11:51,604 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (not (= |~#b~0.base| |~#a~0.base|))) [2021-02-21 16:11:51,604 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:11:51,604 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:11:51,605 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 19 30) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |~#a~0.base|) |~#a~0.offset|) (select (select |old(#memory_int)| |~#b~0.base|) |~#b~0.offset|))) (and (= ~pa~0.base |old(~pa~0.base)|) (= |old(~pa~0.offset)| ~pa~0.offset) (= |old(~pb~0.base)| ~pb~0.base) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (= |old(~pb~0.offset)| ~pb~0.offset)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-21 16:11:51,605 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 19 30) no Hoare annotation was computed. [2021-02-21 16:11:51,605 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |~#a~0.base|) |~#a~0.offset|) (select (select |old(#memory_int)| |~#b~0.base|) |~#b~0.offset|))) (= (select (select |#memory_int| |~#a~0.base|) |~#a~0.offset|) (select (select |#memory_int| |~#b~0.base|) |~#b~0.offset|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-21 16:11:51,605 INFO L189 CegarLoopUtils]: For program point L28-1(line 28) no Hoare annotation was computed. [2021-02-21 16:11:51,605 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 19 30) no Hoare annotation was computed. [2021-02-21 16:11:51,623 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:11:51 BoogieIcfgContainer [2021-02-21 16:11:51,623 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:11:51,625 INFO L168 Benchmark]: Toolchain (without parser) took 2241.95 ms. Allocated memory is still 151.0 MB. Free memory was 126.6 MB in the beginning and 112.8 MB in the end (delta: 13.8 MB). Peak memory consumption was 79.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:11:51,626 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:11:51,627 INFO L168 Benchmark]: CACSL2BoogieTranslator took 328.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 116.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:11:51,628 INFO L168 Benchmark]: Boogie Preprocessor took 57.14 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:11:51,629 INFO L168 Benchmark]: RCFGBuilder took 518.39 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 101.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:11:51,630 INFO L168 Benchmark]: TraceAbstraction took 1308.49 ms. Allocated memory is still 151.0 MB. Free memory was 100.8 MB in the beginning and 112.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 54.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:11:51,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 123.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 328.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 116.3 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.14 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 518.39 ms. Allocated memory is still 151.0 MB. Free memory was 114.8 MB in the beginning and 101.2 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1308.49 ms. Allocated memory is still 151.0 MB. Free memory was 100.8 MB in the beginning and 112.8 MB in the end (delta: -11.9 MB). Peak memory consumption was 54.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: (!(unknown-#memory_int-unknown[b][b] == unknown-#memory_int-unknown[a][a]) || a == b) || !(unknown-#memory_int-unknown[a][a] == unknown-#memory_int-unknown[b][b]) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 15 SDslu, 18 SDs, 0 SdLazy, 23 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 168 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 159 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 873 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...