/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/loops/while_infinite_loop_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:53:06,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:53:06,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:53:06,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:53:06,943 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:53:06,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:53:06,946 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:53:06,947 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:53:06,948 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:53:06,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:53:06,967 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:53:06,971 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:53:06,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:53:06,977 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:53:06,981 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:53:06,982 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:53:06,990 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:53:07,007 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:53:07,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:53:07,009 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:53:07,013 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 [2021-02-23 13:53:07,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:53:07,082 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:53:07,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:53:07,087 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:53:07,087 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:53:07,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:53:07,087 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:53:07,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:53:07,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:53:07,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:53:07,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:53:07,089 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:53:07,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:53:07,090 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:53:07,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:53:07,090 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:53:07,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:53:07,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:53:07,091 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:53:07,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:53:07,091 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:53:07,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:53:07,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:53:07,092 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:53:07,092 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:53:07,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:53:07,093 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:53:07,093 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:53:07,093 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:53:07,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:53:07,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:53:07,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:53:07,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:53:07,500 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:53:07,501 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_3.c [2021-02-23 13:53:07,589 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3900d17/25a9d50b58c14bee911b8d8680f1ec36/FLAGf1f019c25 [2021-02-23 13:53:08,186 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:53:08,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c [2021-02-23 13:53:08,194 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3900d17/25a9d50b58c14bee911b8d8680f1ec36/FLAGf1f019c25 [2021-02-23 13:53:08,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d3900d17/25a9d50b58c14bee911b8d8680f1ec36 [2021-02-23 13:53:08,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:53:08,580 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:53:08,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:53:08,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:53:08,587 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:53:08,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:53:08" (1/1) ... [2021-02-23 13:53:08,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52fa677f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:08, skipping insertion in model container [2021-02-23 13:53:08,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:53:08" (1/1) ... [2021-02-23 13:53:08,600 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:53:08,616 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:53:08,756 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c[333,346] [2021-02-23 13:53:08,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:53:08,785 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:53:08,800 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_3.c[333,346] [2021-02-23 13:53:08,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:53:08,820 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:53:08,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:08 WrapperNode [2021-02-23 13:53:08,821 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:53:08,822 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:53:08,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:53:08,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:53:08,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:08" (1/1) ... [2021-02-23 13:53:08,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:08" (1/1) ... [2021-02-23 13:53:08,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:08" (1/1) ... [2021-02-23 13:53:08,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:08" (1/1) ... [2021-02-23 13:53:08,850 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:08" (1/1) ... [2021-02-23 13:53:08,855 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:08" (1/1) ... [2021-02-23 13:53:08,856 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:08" (1/1) ... [2021-02-23 13:53:08,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:53:08,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:53:08,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:53:08,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:53:08,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:08" (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 [2021-02-23 13:53:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:53:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:53:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:53:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:53:08,967 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2021-02-23 13:53:08,968 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:53:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:53:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:53:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:53:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:53:08,968 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:53:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2021-02-23 13:53:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:53:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:53:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:53:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:53:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:53:08,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:53:08,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:53:09,325 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:53:09,325 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 13:53:09,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:53:09 BoogieIcfgContainer [2021-02-23 13:53:09,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:53:09,329 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:53:09,329 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:53:09,333 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:53:09,334 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:53:08" (1/3) ... [2021-02-23 13:53:09,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee079ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:53:09, skipping insertion in model container [2021-02-23 13:53:09,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:53:08" (2/3) ... [2021-02-23 13:53:09,335 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ee079ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:53:09, skipping insertion in model container [2021-02-23 13:53:09,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:53:09" (3/3) ... [2021-02-23 13:53:09,337 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2021-02-23 13:53:09,346 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:53:09,351 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:53:09,472 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:53:09,529 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:53:09,529 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:53:09,530 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:53:09,530 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:53:09,530 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:53:09,530 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:53:09,530 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:53:09,530 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:53:09,548 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-02-23 13:53:09,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-02-23 13:53:09,555 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:53:09,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:53:09,556 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:53:09,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:53:09,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1499484955, now seen corresponding path program 1 times [2021-02-23 13:53:09,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:53:09,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419368442] [2021-02-23 13:53:09,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:53:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:09,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:09,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:09,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:09,850 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:09,978 WARN L202 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-23 13:53:09,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:53:09,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:10,027 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:10,029 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:53:10,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419368442] [2021-02-23 13:53:10,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:53:10,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:53:10,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128723648] [2021-02-23 13:53:10,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:53:10,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:53:10,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:53:10,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:53:10,075 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2021-02-23 13:53:10,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:53:10,203 INFO L93 Difference]: Finished difference Result 37 states and 53 transitions. [2021-02-23 13:53:10,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:53:10,206 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2021-02-23 13:53:10,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:53:10,226 INFO L225 Difference]: With dead ends: 37 [2021-02-23 13:53:10,226 INFO L226 Difference]: Without dead ends: 19 [2021-02-23 13:53:10,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:53:10,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-02-23 13:53:10,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2021-02-23 13:53:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-02-23 13:53:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-02-23 13:53:10,279 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2021-02-23 13:53:10,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:53:10,280 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-02-23 13:53:10,280 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:53:10,281 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-02-23 13:53:10,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-23 13:53:10,282 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:53:10,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:53:10,283 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:53:10,284 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:53:10,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:53:10,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1713498874, now seen corresponding path program 1 times [2021-02-23 13:53:10,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:53:10,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544409434] [2021-02-23 13:53:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:53:10,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:10,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:10,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:10,392 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:10,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:53:10,402 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:10,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:10,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:10,416 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:53:10,429 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:10,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:10,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:53:10,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:10,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:10,508 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:53:10,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:53:10,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:53:10,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:53:10,522 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:53:10,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:53:10,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544409434] [2021-02-23 13:53:10,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:53:10,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 13:53:10,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314881392] [2021-02-23 13:53:10,527 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 13:53:10,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:53:10,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 13:53:10,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:53:10,528 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 7 states. [2021-02-23 13:53:10,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:53:10,717 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-02-23 13:53:10,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 13:53:10,718 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2021-02-23 13:53:10,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:53:10,718 INFO L225 Difference]: With dead ends: 17 [2021-02-23 13:53:10,719 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:53:10,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-02-23 13:53:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:53:10,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:53:10,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:53:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:53:10,721 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-02-23 13:53:10,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:53:10,722 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:53:10,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 13:53:10,722 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:53:10,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:53:10,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:53:10,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:53:10,965 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 13:53:10,965 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 13:53:10,966 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 13:53:10,968 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:53:10,969 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~x~0 |old(~x~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 13:53:10,969 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:53:10,969 INFO L185 CegarLoopUtils]: At program point evalENTRY(lines 14 21) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2021-02-23 13:53:10,970 INFO L189 CegarLoopUtils]: For program point L16-1(lines 14 21) no Hoare annotation was computed. [2021-02-23 13:53:10,970 INFO L189 CegarLoopUtils]: For program point evalEXIT(lines 14 21) no Hoare annotation was computed. [2021-02-23 13:53:10,970 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:53:10,970 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (= ~x~0 0) [2021-02-23 13:53:10,970 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:53:10,971 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:53:10,971 INFO L189 CegarLoopUtils]: For program point L32(line 32) no Hoare annotation was computed. [2021-02-23 13:53:10,974 INFO L185 CegarLoopUtils]: At program point L29(lines 24 35) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2021-02-23 13:53:10,974 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2021-02-23 13:53:10,975 INFO L185 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (= |old(~x~0)| 0))) [2021-02-23 13:53:10,975 INFO L185 CegarLoopUtils]: At program point L26-1(lines 26 30) the Hoare annotation is: (not (= |old(~x~0)| 0)) [2021-02-23 13:53:10,975 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 24 35) no Hoare annotation was computed. [2021-02-23 13:53:10,975 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 24 35) no Hoare annotation was computed. [2021-02-23 13:53:10,976 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-23 13:53:10,976 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2021-02-23 13:53:10,976 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-23 13:53:10,976 INFO L189 CegarLoopUtils]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-02-23 13:53:10,976 INFO L189 CegarLoopUtils]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2021-02-23 13:53:10,976 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-02-23 13:53:10,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:53:10 BoogieIcfgContainer [2021-02-23 13:53:10,993 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:53:10,998 INFO L168 Benchmark]: Toolchain (without parser) took 2426.65 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 126.6 MB in the end (delta: -448.5 kB). Peak memory consumption was 80.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:10,999 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:53:11,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 116.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:11,004 INFO L168 Benchmark]: Boogie Preprocessor took 36.78 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:11,004 INFO L168 Benchmark]: RCFGBuilder took 467.45 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 102.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:11,005 INFO L168 Benchmark]: TraceAbstraction took 1664.45 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 126.6 MB in the end (delta: -25.0 MB). Peak memory consumption was 54.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:53:11,009 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 151.0 MB. Free memory is still 123.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 238.43 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 116.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.78 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 467.45 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 102.0 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1664.45 ms. Allocated memory is still 151.0 MB. Free memory was 101.6 MB in the beginning and 126.6 MB in the end (delta: -25.0 MB). Peak memory consumption was 54.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 23 SDslu, 17 SDs, 0 SdLazy, 28 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 12 PreInvPairs, 15 NumberOfFragments, 75 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 184 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 1158 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...