/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/test11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:37:30,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:37:30,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:37:30,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:37:30,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:37:30,524 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:37:30,524 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:37:30,528 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 13:37:30,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:37:30,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:37:30,585 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:37:30,586 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:37:30,586 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:37:30,587 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:37:30,587 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:37:30,587 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:37:30,587 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:37:30,587 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:37:30,588 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:37:30,588 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:37:30,589 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:37:30,589 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:37:30,589 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:37:30,589 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:37:30,590 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:37:30,590 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:37:30,590 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:37:30,590 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:37:30,591 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:37:30,591 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:37:30,591 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:37:30,591 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:37:30,591 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:37:30,592 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:37:30,592 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:37:30,592 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:37:30,592 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:37:31,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:37:31,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:37:31,044 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:37:31,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:37:31,046 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:37:31,047 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test11.c [2021-02-23 13:37:31,130 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2f4944b/01cf3d081d6147589aa91b827b84b3a4/FLAG85817926d [2021-02-23 13:37:31,764 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:37:31,765 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test11.c [2021-02-23 13:37:31,774 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2f4944b/01cf3d081d6147589aa91b827b84b3a4/FLAG85817926d [2021-02-23 13:37:32,111 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa2f4944b/01cf3d081d6147589aa91b827b84b3a4 [2021-02-23 13:37:32,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:37:32,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:37:32,130 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:32,130 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:37:32,135 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:37:32,136 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:32" (1/1) ... [2021-02-23 13:37:32,138 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5de1e2fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:32, skipping insertion in model container [2021-02-23 13:37:32,138 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:32" (1/1) ... [2021-02-23 13:37:32,147 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:37:32,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:37:32,320 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/test11.c[823,836] [2021-02-23 13:37:32,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:32,335 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:37:32,354 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/test11.c[823,836] [2021-02-23 13:37:32,355 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:32,373 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:37:32,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:32 WrapperNode [2021-02-23 13:37:32,374 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:32,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:37:32,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:37:32,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:37:32,389 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:32" (1/1) ... [2021-02-23 13:37:32,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:32" (1/1) ... [2021-02-23 13:37:32,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:32" (1/1) ... [2021-02-23 13:37:32,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:32" (1/1) ... [2021-02-23 13:37:32,405 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:32" (1/1) ... [2021-02-23 13:37:32,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:32" (1/1) ... [2021-02-23 13:37:32,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:32" (1/1) ... [2021-02-23 13:37:32,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:37:32,413 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:37:32,413 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:37:32,413 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:37:32,414 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:32" (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 13:37:32,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:37:32,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:37:32,516 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:37:32,516 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2021-02-23 13:37:32,517 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:37:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:37:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:37:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:37:32,517 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:37:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:37:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-23 13:37:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2021-02-23 13:37:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:37:32,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:37:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:37:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:37:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:37:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:37:32,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:37:32,943 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:37:32,962 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 13:37:32,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:32 BoogieIcfgContainer [2021-02-23 13:37:32,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:37:32,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:37:32,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:37:32,975 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:37:32,975 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:37:32" (1/3) ... [2021-02-23 13:37:32,976 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4830cec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:32, skipping insertion in model container [2021-02-23 13:37:32,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:32" (2/3) ... [2021-02-23 13:37:32,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4830cec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:32, skipping insertion in model container [2021-02-23 13:37:32,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:32" (3/3) ... [2021-02-23 13:37:32,982 INFO L111 eAbstractionObserver]: Analyzing ICFG test11.c [2021-02-23 13:37:32,992 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:37:32,997 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:37:33,023 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:37:33,052 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:37:33,053 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:37:33,053 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:37:33,053 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:37:33,053 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:37:33,053 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:37:33,054 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:37:33,054 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:37:33,073 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2021-02-23 13:37:33,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-23 13:37:33,079 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:37:33,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:37:33,081 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:37:33,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:37:33,088 INFO L82 PathProgramCache]: Analyzing trace with hash 1940527405, now seen corresponding path program 1 times [2021-02-23 13:37:33,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:37:33,099 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543920018] [2021-02-23 13:37:33,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:37:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:33,320 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:33,322 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:33,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:33,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:37:33,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:33,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 13:37:33,355 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:33,356 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:33,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:37:33,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:33,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:33,482 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:33,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:37:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:33,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:33,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:33,520 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 13:37:33,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543920018] [2021-02-23 13:37:33,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:37:33,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:37:33,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419104232] [2021-02-23 13:37:33,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:37:33,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:37:33,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:37:33,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:37:33,558 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2021-02-23 13:37:33,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:37:33,794 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2021-02-23 13:37:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:37:33,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2021-02-23 13:37:33,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:37:33,808 INFO L225 Difference]: With dead ends: 31 [2021-02-23 13:37:33,809 INFO L226 Difference]: Without dead ends: 19 [2021-02-23 13:37:33,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:37:33,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-02-23 13:37:33,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-02-23 13:37:33,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-02-23 13:37:33,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2021-02-23 13:37:33,857 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2021-02-23 13:37:33,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:37:33,858 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2021-02-23 13:37:33,858 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:37:33,859 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2021-02-23 13:37:33,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-02-23 13:37:33,859 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:37:33,860 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:37:33,860 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:37:33,860 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:37:33,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:37:33,861 INFO L82 PathProgramCache]: Analyzing trace with hash 832627571, now seen corresponding path program 1 times [2021-02-23 13:37:33,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:37:33,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32546546] [2021-02-23 13:37:33,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:37:33,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:33,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:33,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:33,937 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:33,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-23 13:37:33,988 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:33,990 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 13:37:34,003 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:34,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 2 [2021-02-23 13:37:34,018 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:34,019 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:34,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:37:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:34,090 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:34,090 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:34,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:37:34,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:34,097 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:34,098 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:34,100 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 13:37:34,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32546546] [2021-02-23 13:37:34,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:37:34,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-23 13:37:34,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065406031] [2021-02-23 13:37:34,102 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-23 13:37:34,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:37:34,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-23 13:37:34,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:37:34,104 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 6 states. [2021-02-23 13:37:34,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:37:34,203 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-02-23 13:37:34,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:37:34,204 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2021-02-23 13:37:34,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:37:34,205 INFO L225 Difference]: With dead ends: 21 [2021-02-23 13:37:34,205 INFO L226 Difference]: Without dead ends: 19 [2021-02-23 13:37:34,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-23 13:37:34,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-02-23 13:37:34,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-02-23 13:37:34,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-02-23 13:37:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-02-23 13:37:34,214 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 17 [2021-02-23 13:37:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:37:34,214 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-02-23 13:37:34,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-23 13:37:34,215 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-02-23 13:37:34,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-02-23 13:37:34,216 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:37:34,216 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:37:34,216 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:37:34,216 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:37:34,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:37:34,217 INFO L82 PathProgramCache]: Analyzing trace with hash 41652782, now seen corresponding path program 1 times [2021-02-23 13:37:34,217 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:37:34,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893574346] [2021-02-23 13:37:34,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:37:34,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:34,268 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:34,269 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:34,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:34,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:37:34,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:34,278 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:37:34,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:34,283 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:34,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:37:34,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:34,330 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:34,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:34,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:37:34,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:34,338 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:34,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:34,341 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 13:37:34,342 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893574346] [2021-02-23 13:37:34,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:37:34,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:37:34,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419728897] [2021-02-23 13:37:34,343 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:37:34,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:37:34,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:37:34,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:37:34,344 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 5 states. [2021-02-23 13:37:34,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:37:34,425 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-02-23 13:37:34,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-23 13:37:34,426 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2021-02-23 13:37:34,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:37:34,426 INFO L225 Difference]: With dead ends: 19 [2021-02-23 13:37:34,427 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:37:34,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:37:34,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:37:34,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:37:34,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:37:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:37:34,429 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2021-02-23 13:37:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:37:34,429 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:37:34,429 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:37:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:37:34,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:37:34,430 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:37:34,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:37:34,572 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 13:37:34,573 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 13:37:34,573 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 13:37:34,573 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:37:34,574 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-23 13:37:34,574 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:37:34,574 INFO L189 CegarLoopUtils]: For program point get_dummyFINAL(lines 9 12) no Hoare annotation was computed. [2021-02-23 13:37:34,574 INFO L189 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2021-02-23 13:37:34,574 INFO L192 CegarLoopUtils]: At program point get_dummyENTRY(lines 9 12) the Hoare annotation is: true [2021-02-23 13:37:34,574 INFO L189 CegarLoopUtils]: For program point get_dummyEXIT(lines 9 12) no Hoare annotation was computed. [2021-02-23 13:37:34,575 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:37:34,575 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:37:34,575 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:37:34,575 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:37:34,575 INFO L185 CegarLoopUtils]: At program point L27(lines 14 34) the Hoare annotation is: false [2021-02-23 13:37:34,576 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 14 34) no Hoare annotation was computed. [2021-02-23 13:37:34,576 INFO L189 CegarLoopUtils]: For program point L21(line 21) no Hoare annotation was computed. [2021-02-23 13:37:34,576 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (and (= main_~pc~0.base |main_~#c~0.base|) (not (= main_~pc~0.base 0)) (= |main_~#c~0.offset| main_~pc~0.offset)) [2021-02-23 13:37:34,576 INFO L189 CegarLoopUtils]: For program point L21-2(line 21) no Hoare annotation was computed. [2021-02-23 13:37:34,576 INFO L189 CegarLoopUtils]: For program point L19-1(line 19) no Hoare annotation was computed. [2021-02-23 13:37:34,576 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 14 34) no Hoare annotation was computed. [2021-02-23 13:37:34,577 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 32) no Hoare annotation was computed. [2021-02-23 13:37:34,577 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 14 34) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-23 13:37:34,577 INFO L189 CegarLoopUtils]: For program point L26(lines 26 28) no Hoare annotation was computed. [2021-02-23 13:37:34,577 INFO L189 CegarLoopUtils]: For program point L20(lines 20 21) no Hoare annotation was computed. [2021-02-23 13:37:34,577 INFO L189 CegarLoopUtils]: For program point L20-2(lines 20 23) no Hoare annotation was computed. [2021-02-23 13:37:34,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:37:34 BoogieIcfgContainer [2021-02-23 13:37:34,589 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:37:34,590 INFO L168 Benchmark]: Toolchain (without parser) took 2473.76 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 137.6 MB in the beginning and 159.1 MB in the end (delta: -21.5 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:34,591 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 162.5 MB. Free memory is still 134.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:37:34,592 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.49 ms. Allocated memory is still 162.5 MB. Free memory was 136.4 MB in the beginning and 127.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:34,593 INFO L168 Benchmark]: Boogie Preprocessor took 37.20 ms. Allocated memory is still 162.5 MB. Free memory was 127.1 MB in the beginning and 125.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:34,594 INFO L168 Benchmark]: RCFGBuilder took 551.75 ms. Allocated memory is still 162.5 MB. Free memory was 125.5 MB in the beginning and 144.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:34,595 INFO L168 Benchmark]: TraceAbstraction took 1622.73 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 144.6 MB in the beginning and 159.1 MB in the end (delta: -14.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:34,598 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 162.5 MB. Free memory is still 134.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.49 ms. Allocated memory is still 162.5 MB. Free memory was 136.4 MB in the beginning and 127.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.20 ms. Allocated memory is still 162.5 MB. Free memory was 127.1 MB in the beginning and 125.5 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 551.75 ms. Allocated memory is still 162.5 MB. Free memory was 125.5 MB in the beginning and 144.8 MB in the end (delta: -19.3 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1622.73 ms. Allocated memory was 162.5 MB in the beginning and 195.0 MB in the end (delta: 32.5 MB). Free memory was 144.6 MB in the beginning and 159.1 MB in the end (delta: -14.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 32]: 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: 14]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.3s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 32 SDslu, 67 SDs, 0 SdLazy, 104 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 65 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 78 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 47 ConstructedInterpolants, 0 QuantifiedInterpolants, 4067 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...