/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test21-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 05:16:52,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 05:16:52,348 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 05:16:52,384 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 05:16:52,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 05:16:52,387 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 05:16:52,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 05:16:52,391 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 05:16:52,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 05:16:52,395 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 05:16:52,397 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 05:16:52,398 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 05:16:52,399 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 05:16:52,400 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 05:16:52,401 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 05:16:52,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 05:16:52,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 05:16:52,405 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 05:16:52,430 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 05:16:52,435 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 05:16:52,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 05:16:52,446 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 05:16:52,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 05:16:52,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 05:16:52,458 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 05:16:52,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 05:16:52,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 05:16:52,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 05:16:52,486 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 05:16:52,511 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 05:16:52,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 05:16:52,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 05:16:52,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 05:16:52,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 05:16:52,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 05:16:52,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 05:16:52,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 05:16:52,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 05:16:52,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 05:16:52,519 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 05:16:52,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 05:16:52,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 05:16:52,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 05:16:52,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 05:16:52,520 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 05:16:52,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 05:16:52,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 05:16:52,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:16:52,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 05:16:52,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 05:16:52,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 05:16:52,522 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-11-07 05:16:52,928 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 05:16:52,979 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 05:16:52,983 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 05:16:52,984 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 05:16:52,985 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 05:16:52,986 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-1.c [2020-11-07 05:16:53,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88da5f734/d595764330e048d98c42e13e9df85ef2/FLAG3a6b8bf82 [2020-11-07 05:16:53,781 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 05:16:53,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test21-1.c [2020-11-07 05:16:53,791 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88da5f734/d595764330e048d98c42e13e9df85ef2/FLAG3a6b8bf82 [2020-11-07 05:16:54,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/88da5f734/d595764330e048d98c42e13e9df85ef2 [2020-11-07 05:16:54,125 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 05:16:54,133 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 05:16:54,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:54,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 05:16:54,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 05:16:54,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:54" (1/1) ... [2020-11-07 05:16:54,147 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46c6da28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:54, skipping insertion in model container [2020-11-07 05:16:54,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 05:16:54" (1/1) ... [2020-11-07 05:16:54,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 05:16:54,177 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 05:16:54,455 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:54,472 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 05:16:54,499 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 05:16:54,518 INFO L208 MainTranslator]: Completed translation [2020-11-07 05:16:54,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:54 WrapperNode [2020-11-07 05:16:54,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 05:16:54,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 05:16:54,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 05:16:54,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 05:16:54,536 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:54" (1/1) ... [2020-11-07 05:16:54,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:54" (1/1) ... [2020-11-07 05:16:54,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:54" (1/1) ... [2020-11-07 05:16:54,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:54" (1/1) ... [2020-11-07 05:16:54,557 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:54" (1/1) ... [2020-11-07 05:16:54,559 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:54" (1/1) ... [2020-11-07 05:16:54,561 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:54" (1/1) ... [2020-11-07 05:16:54,564 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 05:16:54,566 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 05:16:54,566 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 05:16:54,566 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 05:16:54,567 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:54" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 05:16:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 05:16:54,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 05:16:54,666 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 05:16:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-11-07 05:16:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-11-07 05:16:54,667 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-11-07 05:16:54,668 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 05:16:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 05:16:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 05:16:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 05:16:54,668 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 05:16:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 05:16:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-07 05:16:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-11-07 05:16:54,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 05:16:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-11-07 05:16:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-11-07 05:16:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 05:16:54,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 05:16:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 05:16:54,671 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 05:16:54,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 05:16:54,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 05:16:55,287 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 05:16:55,287 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-07 05:16:55,289 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:55 BoogieIcfgContainer [2020-11-07 05:16:55,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 05:16:55,293 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 05:16:55,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 05:16:55,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 05:16:55,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 05:16:54" (1/3) ... [2020-11-07 05:16:55,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3216151e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:55, skipping insertion in model container [2020-11-07 05:16:55,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 05:16:54" (2/3) ... [2020-11-07 05:16:55,300 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3216151e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 05:16:55, skipping insertion in model container [2020-11-07 05:16:55,300 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 05:16:55" (3/3) ... [2020-11-07 05:16:55,302 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-1.c [2020-11-07 05:16:55,322 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 05:16:55,326 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 05:16:55,341 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 05:16:55,386 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 05:16:55,386 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 05:16:55,387 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-07 05:16:55,387 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 05:16:55,387 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 05:16:55,387 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 05:16:55,387 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 05:16:55,387 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 05:16:55,413 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-11-07 05:16:55,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-11-07 05:16:55,440 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 05:16:55,441 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 05:16:55,442 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 05:16:55,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 05:16:55,453 INFO L82 PathProgramCache]: Analyzing trace with hash -1388877468, now seen corresponding path program 1 times [2020-11-07 05:16:55,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 05:16:55,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45602851] [2020-11-07 05:16:55,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 05:16:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:56,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 05:16:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:56,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-11-07 05:16:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:56,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-11-07 05:16:56,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:56,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-11-07 05:16:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:56,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-11-07 05:16:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 05:16:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-11-07 05:16:56,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45602851] [2020-11-07 05:16:56,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 05:16:56,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-11-07 05:16:56,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808951741] [2020-11-07 05:16:56,352 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-07 05:16:56,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 05:16:56,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-07 05:16:56,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2020-11-07 05:16:56,371 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 16 states. [2020-11-07 05:16:58,365 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-11-07 05:16:58,517 WARN L194 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-11-07 05:16:58,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 05:16:58,884 INFO L93 Difference]: Finished difference Result 105 states and 114 transitions. [2020-11-07 05:16:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-11-07 05:16:58,886 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-11-07 05:16:58,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 05:16:58,893 INFO L225 Difference]: With dead ends: 105 [2020-11-07 05:16:58,893 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 05:16:58,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=187, Invalid=1073, Unknown=0, NotChecked=0, Total=1260 [2020-11-07 05:16:58,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 05:16:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 05:16:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 05:16:58,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 05:16:58,922 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 69 [2020-11-07 05:16:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 05:16:58,923 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 05:16:58,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-07 05:16:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 05:16:58,923 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 05:16:58,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 05:16:58,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 05:16:59,837 WARN L194 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 30 [2020-11-07 05:16:59,954 WARN L194 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 26 [2020-11-07 05:17:00,142 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 29 [2020-11-07 05:17:00,260 WARN L194 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 33 [2020-11-07 05:17:00,545 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 05:17:00,545 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 05:17:00,545 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 05:17:00,546 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 05:17:00,546 INFO L269 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true [2020-11-07 05:17:00,546 INFO L262 CegarLoopResult]: At program point initENTRY(lines 13 20) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-11-07 05:17:00,546 INFO L269 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-11-07 05:17:00,546 INFO L269 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: true [2020-11-07 05:17:00,547 INFO L269 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: true [2020-11-07 05:17:00,547 INFO L269 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: true [2020-11-07 05:17:00,547 INFO L269 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-11-07 05:17:00,547 INFO L269 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: true [2020-11-07 05:17:00,547 INFO L262 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-11-07 05:17:00,547 INFO L269 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-11-07 05:17:00,548 INFO L269 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-11-07 05:17:00,548 INFO L269 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-11-07 05:17:00,548 INFO L269 CegarLoopResult]: At program point initEXIT(lines 13 20) the Hoare annotation is: true [2020-11-07 05:17:00,548 INFO L269 CegarLoopResult]: At program point initFINAL(lines 13 20) the Hoare annotation is: true [2020-11-07 05:17:00,548 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 05:17:00,548 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 05:17:00,549 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 05:17:00,549 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 05:17:00,549 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 05:17:00,549 INFO L269 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-11-07 05:17:00,549 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 11) the Hoare annotation is: true [2020-11-07 05:17:00,549 INFO L269 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: true [2020-11-07 05:17:00,550 INFO L269 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: true [2020-11-07 05:17:00,550 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |old(~#d1~0.base)| |~#d1~0.base|) (= |old(~#d1~0.offset)| |~#d1~0.offset|) (= |old(~#d2~0.offset)| |~#d2~0.offset|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |old(#valid)| |#valid|) (= |old(~#d2~0.base)| |~#d2~0.base|) (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-11-07 05:17:00,550 INFO L269 CegarLoopResult]: At program point L11-2(line 11) the Hoare annotation is: true [2020-11-07 05:17:00,550 INFO L269 CegarLoopResult]: At program point L11-3(line 11) the Hoare annotation is: true [2020-11-07 05:17:00,550 INFO L269 CegarLoopResult]: At program point L11-4(line 11) the Hoare annotation is: true [2020-11-07 05:17:00,551 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 05:17:00,551 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 05:17:00,551 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 05:17:00,551 INFO L269 CegarLoopResult]: At program point get_dummyFINAL(lines 22 25) the Hoare annotation is: true [2020-11-07 05:17:00,551 INFO L269 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-11-07 05:17:00,551 INFO L269 CegarLoopResult]: At program point get_dummyENTRY(lines 22 25) the Hoare annotation is: true [2020-11-07 05:17:00,552 INFO L269 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: true [2020-11-07 05:17:00,552 INFO L269 CegarLoopResult]: At program point L24-3(line 24) the Hoare annotation is: true [2020-11-07 05:17:00,552 INFO L269 CegarLoopResult]: At program point L24-4(line 24) the Hoare annotation is: true [2020-11-07 05:17:00,552 INFO L269 CegarLoopResult]: At program point get_dummyEXIT(lines 22 25) the Hoare annotation is: true [2020-11-07 05:17:00,552 INFO L269 CegarLoopResult]: At program point L24-5(line 24) the Hoare annotation is: true [2020-11-07 05:17:00,552 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 05:17:00,553 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 05:17:00,553 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 05:17:00,553 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 05:17:00,553 INFO L269 CegarLoopResult]: At program point L35-2(line 35) the Hoare annotation is: true [2020-11-07 05:17:00,553 INFO L262 CegarLoopResult]: At program point L37-4(line 37) the Hoare annotation is: (and (<= 1 |main_#t~ret17|) (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-11-07 05:17:00,553 INFO L269 CegarLoopResult]: At program point L35-3(line 35) the Hoare annotation is: true [2020-11-07 05:17:00,554 INFO L269 CegarLoopResult]: At program point L35-4(line 35) the Hoare annotation is: true [2020-11-07 05:17:00,554 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 32 46) the Hoare annotation is: true [2020-11-07 05:17:00,554 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 32 46) the Hoare annotation is: true [2020-11-07 05:17:00,554 INFO L262 CegarLoopResult]: At program point L44(line 44) the Hoare annotation is: false [2020-11-07 05:17:00,554 INFO L262 CegarLoopResult]: At program point L38(lines 33 46) the Hoare annotation is: false [2020-11-07 05:17:00,554 INFO L269 CegarLoopResult]: At program point L36(lines 36 40) the Hoare annotation is: true [2020-11-07 05:17:00,555 INFO L269 CegarLoopResult]: At program point L34(line 34) the Hoare annotation is: true [2020-11-07 05:17:00,555 INFO L269 CegarLoopResult]: At program point L36-2(lines 36 40) the Hoare annotation is: true [2020-11-07 05:17:00,555 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 32 46) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2020-11-07 05:17:00,555 INFO L262 CegarLoopResult]: At program point L45(line 45) the Hoare annotation is: false [2020-11-07 05:17:00,555 INFO L262 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-11-07 05:17:00,555 INFO L262 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: (and (<= 1 |main_#t~ret17|) (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-11-07 05:17:00,556 INFO L269 CegarLoopResult]: At program point L35(line 35) the Hoare annotation is: true [2020-11-07 05:17:00,556 INFO L262 CegarLoopResult]: At program point L37-2(lines 37 39) the Hoare annotation is: (and (<= 1 |main_#t~ret17|) (= main_~pd2~0.offset main_~pd1~0.offset) (= main_~pd2~0.base main_~pd1~0.base)) [2020-11-07 05:17:00,556 INFO L269 CegarLoopResult]: At program point L35-1(line 35) the Hoare annotation is: true [2020-11-07 05:17:00,556 INFO L262 CegarLoopResult]: At program point L37-3(line 37) the Hoare annotation is: false [2020-11-07 05:17:00,556 INFO L269 CegarLoopResult]: At program point checkENTRY(lines 27 30) the Hoare annotation is: true [2020-11-07 05:17:00,557 INFO L262 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: (let ((.cse0 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or (not (= |check_#in~s1.base| |check_#in~s2.base|)) .cse0) (or (= check_~s1.offset check_~s2.offset) (not (= |check_#in~s1.offset| |check_#in~s2.offset|)) (not .cse0)))) [2020-11-07 05:17:00,557 INFO L262 CegarLoopResult]: At program point L29-1(line 29) the Hoare annotation is: (let ((.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse1 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 (= |check_#t~mem13| (select (select |#memory_int| check_~s2.base) check_~s2.offset)) .cse2) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)))) [2020-11-07 05:17:00,557 INFO L262 CegarLoopResult]: At program point L27(lines 27 30) the Hoare annotation is: (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|)) [2020-11-07 05:17:00,557 INFO L262 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: (let ((.cse1 (= check_~s1.base check_~s2.base)) (.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|)))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 (= |check_#t~mem13| (select (select |#memory_int| check_~s2.base) check_~s2.offset)) .cse2) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)) (or .cse0 .cse2 (= |check_#t~mem14| |check_#t~mem13|)))) [2020-11-07 05:17:00,558 INFO L262 CegarLoopResult]: At program point L29-3(line 29) the Hoare annotation is: (let ((.cse1 (= check_~s1.base check_~s2.base)) (.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|)))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 (= |check_#t~mem13| (select (select |#memory_int| check_~s2.base) check_~s2.offset)) .cse2) (or .cse0 .cse2 (<= 1 |check_#res|)) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)) (or .cse0 .cse2 (= |check_#t~mem14| |check_#t~mem13|)))) [2020-11-07 05:17:00,558 INFO L262 CegarLoopResult]: At program point L29-4(line 29) the Hoare annotation is: (let ((.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse1 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 (= |check_#t~mem13| (select (select |#memory_int| check_~s2.base) check_~s2.offset)) .cse2) (or .cse0 .cse2 (<= 1 |check_#res|)) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)))) [2020-11-07 05:17:00,558 INFO L262 CegarLoopResult]: At program point checkFINAL(lines 27 30) the Hoare annotation is: (let ((.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse1 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 .cse2 (<= 1 |check_#res|)) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)))) [2020-11-07 05:17:00,558 INFO L262 CegarLoopResult]: At program point checkEXIT(lines 27 30) the Hoare annotation is: (let ((.cse0 (not (= |check_#in~s1.base| |check_#in~s2.base|))) (.cse2 (not (= |check_#in~s1.offset| |check_#in~s2.offset|))) (.cse1 (= check_~s1.base check_~s2.base))) (and (= |check_#in~s1.base| check_~s1.base) (= check_~s1.offset |check_#in~s1.offset|) (or .cse0 .cse1) (or .cse0 .cse2 (<= 1 |check_#res|)) (or (= check_~s1.offset check_~s2.offset) .cse2 (not .cse1)))) [2020-11-07 05:17:00,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 05:17:00 BoogieIcfgContainer [2020-11-07 05:17:00,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 05:17:00,582 INFO L168 Benchmark]: Toolchain (without parser) took 6454.29 ms. Allocated memory was 151.0 MB in the beginning and 225.4 MB in the end (delta: 74.4 MB). Free memory was 127.5 MB in the beginning and 109.6 MB in the end (delta: 17.8 MB). Peak memory consumption was 102.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:17:00,583 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 05:17:00,585 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.95 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 117.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 05:17:00,586 INFO L168 Benchmark]: Boogie Preprocessor took 44.80 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 115.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 05:17:00,587 INFO L168 Benchmark]: RCFGBuilder took 723.88 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 128.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-11-07 05:17:00,588 INFO L168 Benchmark]: TraceAbstraction took 5286.88 ms. Allocated memory was 151.0 MB in the beginning and 225.4 MB in the end (delta: 74.4 MB). Free memory was 128.0 MB in the beginning and 109.6 MB in the end (delta: 18.4 MB). Peak memory consumption was 102.8 MB. Max. memory is 8.0 GB. [2020-11-07 05:17:00,593 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory was 125.3 MB in the beginning and 125.2 MB in the end (delta: 80.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 381.95 ms. Allocated memory is still 151.0 MB. Free memory was 126.8 MB in the beginning and 117.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.80 ms. Allocated memory is still 151.0 MB. Free memory was 117.2 MB in the beginning and 115.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 723.88 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 128.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5286.88 ms. Allocated memory was 151.0 MB in the beginning and 225.4 MB in the end (delta: 74.4 MB). Free memory was 128.0 MB in the beginning and 109.6 MB in the end (delta: 18.4 MB). Peak memory consumption was 102.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for init Derived contract for procedure init: 1 - ProcedureContractResult [Line: 22]: Procedure Contract for get_dummy Derived contract for procedure get_dummy: 1 - ProcedureContractResult [Line: 32]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 27]: Procedure Contract for check Derived contract for procedure check: (((s1 == s1 && s1 == s1) && (!(s1 == s2) || s1 == s2)) && ((!(s1 == s2) || !(s1 == s2)) || 1 <= \result)) && ((s1 == s2 || !(s1 == s2)) || !(s1 == s2)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.5s, OverallIterations: 1, TraceHistogramMax: 2, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 42 SDtfs, 139 SDslu, 85 SDs, 0 SdLazy, 803 SolverSat, 26 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=74occurred 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, 74 LocationsWithAnnotation, 99 PreInvPairs, 140 NumberOfFragments, 479 HoareAnnotationTreeSize, 99 FomulaSimplifications, 2003 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 74 FomulaSimplificationsInter, 2019 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 68 ConstructedInterpolants, 0 QuantifiedInterpolants, 21352 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 7/7 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...