/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/trex02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 06:46:43,289 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 06:46:43,291 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 06:46:43,321 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-04-16 06:46:43,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 06:46:43,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 06:46:43,350 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 06:46:43,351 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 06:46:43,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 06:46:43,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 06:46:43,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 06:46:43,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 06:46:43,364 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 06:46:43,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 06:46:43,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 06:46:43,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 06:46:43,375 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 06:46:43,385 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 06:46:43,386 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 06:46:43,386 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 06:46:43,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 06:46:43,408 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 06:46:43,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 06:46:43,412 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 06:46:43,413 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 06:46:43,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 06:46:43,413 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 06:46:43,413 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 06:46:43,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 06:46:43,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 06:46:43,413 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 06:46:43,414 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 06:46:43,415 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 06:46:43,415 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 06:46:43,415 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 06:46:43,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 06:46:43,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 06:46:43,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 06:46:43,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 06:46:43,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 06:46:43,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 06:46:43,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 06:46:43,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 06:46:43,417 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 06:46:43,417 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 06:46:43,757 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 06:46:43,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 06:46:43,780 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 06:46:43,781 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 06:46:43,782 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 06:46:43,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-1.c [2021-04-16 06:46:43,851 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073ffcb4a/43338c6241f0491799583ee9ce347fd2/FLAG1e6910de2 [2021-04-16 06:46:44,277 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 06:46:44,277 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c [2021-04-16 06:46:44,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073ffcb4a/43338c6241f0491799583ee9ce347fd2/FLAG1e6910de2 [2021-04-16 06:46:44,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/073ffcb4a/43338c6241f0491799583ee9ce347fd2 [2021-04-16 06:46:44,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 06:46:44,307 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 06:46:44,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 06:46:44,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 06:46:44,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 06:46:44,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:46:44" (1/1) ... [2021-04-16 06:46:44,316 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1478da20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:46:44, skipping insertion in model container [2021-04-16 06:46:44,316 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 06:46:44" (1/1) ... [2021-04-16 06:46:44,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 06:46:44,342 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 06:46:44,472 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c[320,333] [2021-04-16 06:46:44,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:46:44,494 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 06:46:44,505 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex02-1.c[320,333] [2021-04-16 06:46:44,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 06:46:44,521 INFO L208 MainTranslator]: Completed translation [2021-04-16 06:46:44,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:46:44 WrapperNode [2021-04-16 06:46:44,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 06:46:44,523 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 06:46:44,523 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 06:46:44,524 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 06:46:44,556 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:46:44" (1/1) ... [2021-04-16 06:46:44,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:46:44" (1/1) ... [2021-04-16 06:46:44,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:46:44" (1/1) ... [2021-04-16 06:46:44,574 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:46:44" (1/1) ... [2021-04-16 06:46:44,578 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:46:44" (1/1) ... [2021-04-16 06:46:44,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:46:44" (1/1) ... [2021-04-16 06:46:44,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:46:44" (1/1) ... [2021-04-16 06:46:44,601 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 06:46:44,602 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 06:46:44,602 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 06:46:44,602 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 06:46:44,603 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:46:44" (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 [2021-04-16 06:46:44,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 06:46:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 06:46:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 06:46:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-04-16 06:46:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-04-16 06:46:44,674 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 06:46:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 06:46:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 06:46:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 06:46:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 06:46:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 06:46:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-04-16 06:46:44,675 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 06:46:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-04-16 06:46:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 06:46:44,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 06:46:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 06:46:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 06:46:44,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 06:46:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 06:46:44,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 06:46:44,912 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 06:46:44,913 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-04-16 06:46:44,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:46:44 BoogieIcfgContainer [2021-04-16 06:46:44,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 06:46:44,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 06:46:44,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 06:46:44,918 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 06:46:44,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 06:46:44" (1/3) ... [2021-04-16 06:46:44,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133e7425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:46:44, skipping insertion in model container [2021-04-16 06:46:44,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 06:46:44" (2/3) ... [2021-04-16 06:46:44,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@133e7425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 06:46:44, skipping insertion in model container [2021-04-16 06:46:44,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 06:46:44" (3/3) ... [2021-04-16 06:46:44,921 INFO L111 eAbstractionObserver]: Analyzing ICFG trex02-1.c [2021-04-16 06:46:44,926 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 06:46:44,929 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 06:46:44,944 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 06:46:44,961 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 06:46:44,961 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 06:46:44,961 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 06:46:44,961 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 06:46:44,961 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 06:46:44,961 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 06:46:44,962 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 06:46:44,962 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 06:46:44,974 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2021-04-16 06:46:44,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 06:46:44,980 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:44,980 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:44,981 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:44,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:44,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1589172536, now seen corresponding path program 1 times [2021-04-16 06:46:44,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:44,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324425111] [2021-04-16 06:46:44,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:45,079 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:45,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:45,155 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:45,156 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:45,157 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:45,157 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:45,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:45,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:45,228 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:45,228 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:45,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:45,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324425111] [2021-04-16 06:46:45,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:45,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-04-16 06:46:45,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245914565] [2021-04-16 06:46:45,237 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-04-16 06:46:45,238 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:45,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-04-16 06:46:45,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:46:45,257 INFO L87 Difference]: Start difference. First operand has 24 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:45,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:45,336 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-04-16 06:46:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-04-16 06:46:45,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-04-16 06:46:45,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:45,345 INFO L225 Difference]: With dead ends: 35 [2021-04-16 06:46:45,345 INFO L226 Difference]: Without dead ends: 18 [2021-04-16 06:46:45,348 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 42.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-04-16 06:46:45,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-04-16 06:46:45,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-04-16 06:46:45,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 10 states have (on average 1.2) internal successors, (12), 12 states have internal predecessors, (12), 5 states have call successors, (5), 4 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2021-04-16 06:46:45,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-04-16 06:46:45,388 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 11 [2021-04-16 06:46:45,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:45,389 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-04-16 06:46:45,389 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:45,389 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-04-16 06:46:45,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-04-16 06:46:45,390 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 06:46:45,390 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 06:46:45,391 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 06:46:45,391 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 06:46:45,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 06:46:45,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1578090284, now seen corresponding path program 1 times [2021-04-16 06:46:45,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 06:46:45,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492139962] [2021-04-16 06:46:45,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 06:46:45,402 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 06:46:45,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:45,489 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:45,489 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:45,491 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:45,491 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:45,492 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:45,493 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-04-16 06:46:45,497 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:45,497 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:45,502 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:45,503 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 06:46:45,511 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:45,512 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:45,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 06:46:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 06:46:45,570 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 06:46:45,571 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 06:46:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 06:46:45,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492139962] [2021-04-16 06:46:45,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 06:46:45,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 06:46:45,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994690518] [2021-04-16 06:46:45,573 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 06:46:45,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 06:46:45,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 06:46:45,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-16 06:46:45,575 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:45,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 06:46:45,717 INFO L93 Difference]: Finished difference Result 18 states and 20 transitions. [2021-04-16 06:46:45,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 06:46:45,717 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-04-16 06:46:45,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 06:46:45,718 INFO L225 Difference]: With dead ends: 18 [2021-04-16 06:46:45,718 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 06:46:45,719 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 122.0ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-04-16 06:46:45,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 06:46:45,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 06:46:45,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-16 06:46:45,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 06:46:45,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2021-04-16 06:46:45,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 06:46:45,720 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 06:46:45,720 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 06:46:45,720 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 06:46:45,720 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 06:46:45,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 06:46:45,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-16 06:46:45,960 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-04-16 06:46:45,960 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-04-16 06:46:45,960 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-04-16 06:46:45,960 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (<= ~x~0 0) [2021-04-16 06:46:45,961 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~x~0 |old(~x~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-04-16 06:46:45,962 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (<= ~x~0 0) [2021-04-16 06:46:45,962 INFO L201 CegarLoopUtils]: At program point fooEXIT(lines 17 19) the Hoare annotation is: true [2021-04-16 06:46:45,962 INFO L194 CegarLoopUtils]: At program point fooENTRY(lines 17 19) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2021-04-16 06:46:45,962 INFO L201 CegarLoopUtils]: At program point fooFINAL(lines 17 19) the Hoare annotation is: true [2021-04-16 06:46:45,962 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-04-16 06:46:45,962 INFO L194 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (<= ~x~0 0) [2021-04-16 06:46:45,962 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-16 06:46:45,962 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-04-16 06:46:45,963 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 21 29) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (<= |old(~x~0)| 0))) [2021-04-16 06:46:45,963 INFO L201 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-04-16 06:46:45,963 INFO L201 CegarLoopUtils]: At program point L25(lines 25 26) the Hoare annotation is: true [2021-04-16 06:46:45,963 INFO L201 CegarLoopUtils]: At program point L26-1(lines 23 27) the Hoare annotation is: true [2021-04-16 06:46:45,964 INFO L201 CegarLoopUtils]: At program point mainEXIT(lines 21 29) the Hoare annotation is: true [2021-04-16 06:46:45,964 INFO L201 CegarLoopUtils]: At program point L25-1(line 25) the Hoare annotation is: true [2021-04-16 06:46:45,964 INFO L194 CegarLoopUtils]: At program point L23-2(lines 23 27) the Hoare annotation is: (or (<= ~x~0 0) (not (<= |old(~x~0)| 0))) [2021-04-16 06:46:45,964 INFO L201 CegarLoopUtils]: At program point mainFINAL(lines 21 29) the Hoare annotation is: true [2021-04-16 06:46:45,964 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-04-16 06:46:45,965 INFO L201 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-04-16 06:46:45,967 INFO L194 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~x~0 0))) [2021-04-16 06:46:45,967 INFO L194 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)) (not (<= ~x~0 0))) [2021-04-16 06:46:45,967 INFO L201 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-04-16 06:46:45,967 INFO L194 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (<= ~x~0 0))) [2021-04-16 06:46:45,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 06:46:45 BoogieIcfgContainer [2021-04-16 06:46:45,977 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 06:46:45,978 INFO L168 Benchmark]: Toolchain (without parser) took 1670.81 ms. Allocated memory is still 199.2 MB. Free memory was 164.8 MB in the beginning and 73.3 MB in the end (delta: 91.5 MB). Peak memory consumption was 90.8 MB. Max. memory is 8.0 GB. [2021-04-16 06:46:45,978 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 199.2 MB. Free memory is still 181.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 06:46:45,979 INFO L168 Benchmark]: CACSL2BoogieTranslator took 211.81 ms. Allocated memory is still 199.2 MB. Free memory was 164.6 MB in the beginning and 155.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-04-16 06:46:45,980 INFO L168 Benchmark]: Boogie Preprocessor took 77.94 ms. Allocated memory is still 199.2 MB. Free memory was 155.2 MB in the beginning and 182.7 MB in the end (delta: -27.5 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. [2021-04-16 06:46:45,981 INFO L168 Benchmark]: RCFGBuilder took 312.30 ms. Allocated memory is still 199.2 MB. Free memory was 182.3 MB in the beginning and 168.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-04-16 06:46:45,983 INFO L168 Benchmark]: TraceAbstraction took 1061.15 ms. Allocated memory is still 199.2 MB. Free memory was 168.2 MB in the beginning and 73.3 MB in the end (delta: 94.9 MB). Peak memory consumption was 94.4 MB. Max. memory is 8.0 GB. [2021-04-16 06:46:45,989 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 199.2 MB. Free memory is still 181.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 211.81 ms. Allocated memory is still 199.2 MB. Free memory was 164.6 MB in the beginning and 155.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 77.94 ms. Allocated memory is still 199.2 MB. Free memory was 155.2 MB in the beginning and 182.7 MB in the end (delta: -27.5 MB). Peak memory consumption was 3.7 MB. Max. memory is 8.0 GB. * RCFGBuilder took 312.30 ms. Allocated memory is still 199.2 MB. Free memory was 182.3 MB in the beginning and 168.7 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1061.15 ms. Allocated memory is still 199.2 MB. Free memory was 168.2 MB in the beginning and 73.3 MB in the end (delta: 94.9 MB). Peak memory consumption was 94.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 762.2ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 10.0ms, AutomataDifference: 254.8ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 238.3ms, InitialAbstractionConstructionTime: 8.7ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 39 SDtfs, 12 SDslu, 44 SDs, 0 SdLazy, 33 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 65.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 164.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 29.1ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 24 LocationsWithAnnotation, 33 PreInvPairs, 40 NumberOfFragments, 104 HoareAnnotationTreeSize, 33 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 85.6ms HoareSimplificationTime, 24 FomulaSimplificationsInter, 236 FormulaSimplificationTreeSizeReductionInter, 136.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for foo Derived contract for procedure foo: 1 - ProcedureContractResult [Line: 21]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! Received shutdown request...