/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/nested_structure-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:10:15,991 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:10:15,994 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:10:16,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:10:16,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:10:16,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:10:16,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:10:16,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:10:16,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:10:16,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:10:16,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:10:16,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:10:16,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:10:16,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:10:16,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:10:16,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:10:16,054 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:10:16,069 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:10:16,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:10:16,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:10:16,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:10:16,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:10:16,088 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:10:16,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:10:16,093 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:10:16,115 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:10:16,116 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:10:16,118 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:10:16,119 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 16:10:16,174 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:10:16,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:10:16,178 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:10:16,179 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:10:16,179 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:10:16,180 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:10:16,180 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:10:16,180 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:10:16,180 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:10:16,180 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:10:16,182 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:10:16,182 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:10:16,182 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:10:16,182 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:10:16,183 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:10:16,183 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:10:16,183 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:10:16,183 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:10:16,184 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:10:16,184 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:10:16,184 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:10:16,184 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:10:16,184 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:10:16,185 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:10:16,185 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:10:16,185 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:10:16,185 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:10:16,185 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:10:16,186 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:10:16,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:10:16,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:10:16,611 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:10:16,612 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:10:16,613 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:10:16,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure-1.i [2021-02-21 16:10:16,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4555ff0a/16f2eb2c645343a2a6aa326ca593add1/FLAG46c014250 [2021-02-21 16:10:17,295 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:10:17,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure-1.i [2021-02-21 16:10:17,303 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4555ff0a/16f2eb2c645343a2a6aa326ca593add1/FLAG46c014250 [2021-02-21 16:10:17,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4555ff0a/16f2eb2c645343a2a6aa326ca593add1 [2021-02-21 16:10:17,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:10:17,699 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:10:17,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:10:17,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:10:17,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:10:17,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:10:17" (1/1) ... [2021-02-21 16:10:17,709 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@314b4a46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:10:17, skipping insertion in model container [2021-02-21 16:10:17,710 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:10:17" (1/1) ... [2021-02-21 16:10:17,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:10:17,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:10:17,890 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/nested_structure-1.i[303,316] [2021-02-21 16:10:17,912 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:10:17,924 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:10:17,939 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/nested_structure-1.i[303,316] [2021-02-21 16:10:17,945 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:10:17,962 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:10:17,963 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:10:17 WrapperNode [2021-02-21 16:10:17,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:10:17,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:10:17,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:10:17,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:10:17,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:10:17" (1/1) ... [2021-02-21 16:10:17,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:10:17" (1/1) ... [2021-02-21 16:10:17,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:10:17" (1/1) ... [2021-02-21 16:10:17,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:10:17" (1/1) ... [2021-02-21 16:10:18,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:10:17" (1/1) ... [2021-02-21 16:10:18,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:10:17" (1/1) ... [2021-02-21 16:10:18,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:10:17" (1/1) ... [2021-02-21 16:10:18,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:10:18,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:10:18,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:10:18,008 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:10:18,009 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:10:17" (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 16:10:18,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:10:18,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:10:18,136 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:10:18,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2021-02-21 16:10:18,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:10:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:10:18,137 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:10:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:10:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:10:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2021-02-21 16:10:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:10:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:10:18,138 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-21 16:10:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 16:10:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:10:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:10:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:10:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:10:18,139 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:10:18,140 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 16:10:18,584 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:10:18,584 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 16:10:18,589 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:10:18 BoogieIcfgContainer [2021-02-21 16:10:18,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:10:18,616 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:10:18,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:10:18,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:10:18,626 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:10:17" (1/3) ... [2021-02-21 16:10:18,627 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47af683b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:10:18, skipping insertion in model container [2021-02-21 16:10:18,627 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:10:17" (2/3) ... [2021-02-21 16:10:18,628 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47af683b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:10:18, skipping insertion in model container [2021-02-21 16:10:18,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:10:18" (3/3) ... [2021-02-21 16:10:18,630 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_structure-1.i [2021-02-21 16:10:18,651 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:10:18,663 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:10:18,698 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:10:18,726 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:10:18,727 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:10:18,727 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:10:18,727 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:10:18,727 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:10:18,727 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:10:18,728 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:10:18,728 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:10:18,745 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2021-02-21 16:10:18,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-02-21 16:10:18,751 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:10:18,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:10:18,752 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:10:18,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:10:18,759 INFO L82 PathProgramCache]: Analyzing trace with hash 1062496394, now seen corresponding path program 1 times [2021-02-21 16:10:18,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:10:18,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417255426] [2021-02-21 16:10:18,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:10:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:10:19,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:10:19,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:10:19,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:10:19,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:10:19,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:10:19,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:10:19,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:10:19,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:10:19,281 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:10:19,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:10:19,286 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 16:10:19,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417255426] [2021-02-21 16:10:19,288 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:10:19,288 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:10:19,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464766592] [2021-02-21 16:10:19,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:10:19,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:10:19,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:10:19,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:10:19,326 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2021-02-21 16:10:19,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:10:19,407 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-02-21 16:10:19,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:10:19,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2021-02-21 16:10:19,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:10:19,416 INFO L225 Difference]: With dead ends: 22 [2021-02-21 16:10:19,416 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:10:19,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:10:19,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:10:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:10:19,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:10:19,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:10:19,449 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2021-02-21 16:10:19,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:10:19,449 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:10:19,449 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:10:19,450 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:10:19,450 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:10:19,450 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:10:19,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:10:19,543 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 16:10:19,543 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 16:10:19,543 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 16:10:19,544 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:10:19,544 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)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 16:10:19,545 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:10:19,545 INFO L189 CegarLoopUtils]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2021-02-21 16:10:19,546 INFO L189 CegarLoopUtils]: For program point __blast_assertEXIT(lines 9 12) no Hoare annotation was computed. [2021-02-21 16:10:19,546 INFO L189 CegarLoopUtils]: For program point __blast_assertFINAL(lines 9 12) no Hoare annotation was computed. [2021-02-21 16:10:19,546 INFO L192 CegarLoopUtils]: At program point __blast_assertENTRY(lines 9 12) the Hoare annotation is: true [2021-02-21 16:10:19,546 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:10:19,546 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 16:10:19,547 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:10:19,547 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:10:19,548 INFO L189 CegarLoopUtils]: For program point L32(line 32) no Hoare annotation was computed. [2021-02-21 16:10:19,548 INFO L185 CegarLoopUtils]: At program point L32-2(line 32) the Hoare annotation is: false [2021-02-21 16:10:19,552 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 26 34) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-21 16:10:19,553 INFO L189 CegarLoopUtils]: For program point L32-3(line 32) no Hoare annotation was computed. [2021-02-21 16:10:19,553 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 26 34) no Hoare annotation was computed. [2021-02-21 16:10:19,554 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 26 34) no Hoare annotation was computed. [2021-02-21 16:10:19,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:10:19 BoogieIcfgContainer [2021-02-21 16:10:19,562 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:10:19,566 INFO L168 Benchmark]: Toolchain (without parser) took 1875.20 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 92.6 MB in the end (delta: 33.6 MB). Peak memory consumption was 34.3 MB. Max. memory is 8.0 GB. [2021-02-21 16:10:19,569 INFO L168 Benchmark]: CDTParser took 0.19 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 16:10:19,570 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:10:19,571 INFO L168 Benchmark]: Boogie Preprocessor took 42.27 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:10:19,573 INFO L168 Benchmark]: RCFGBuilder took 582.43 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 132.8 MB in the end (delta: -18.8 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:10:19,576 INFO L168 Benchmark]: TraceAbstraction took 945.39 ms. Allocated memory is still 151.0 MB. Free memory was 132.4 MB in the beginning and 92.6 MB in the end (delta: 39.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:10:19,588 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 262.98 ms. Allocated memory is still 151.0 MB. Free memory was 125.1 MB in the beginning and 115.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.27 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 114.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 582.43 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 132.8 MB in the end (delta: -18.8 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 945.39 ms. Allocated memory is still 151.0 MB. Free memory was 132.4 MB in the beginning and 92.6 MB in the end (delta: 39.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: 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 5 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 1 SDslu, 11 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 42 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 320 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...