/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/loop-lit/gsv2008.c.i.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:21:20,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:21:20,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:21:20,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:21:20,493 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:21:20,505 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:21:20,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:21:20,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:21:20,507 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:21:20,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:21:20,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:21:20,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:21:20,509 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:21:20,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:21:20,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:21:20,509 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:21:20,510 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:21:20,510 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:21:20,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:21:20,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:21:20,511 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:21:20,511 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:21:20,511 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:21:20,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:21:20,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:21:20,512 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:21:20,512 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:21:20,513 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:21:20,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:21:20,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:21:20,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:21:20,907 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:21:20,908 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:21:20,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-02-24 00:21:20,989 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b89fb3c2/fa01395d3a8e48128afc5160a1a78ccf/FLAG3d646754a [2021-02-24 00:21:21,599 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:21:21,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c [2021-02-24 00:21:21,609 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b89fb3c2/fa01395d3a8e48128afc5160a1a78ccf/FLAG3d646754a [2021-02-24 00:21:21,923 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7b89fb3c2/fa01395d3a8e48128afc5160a1a78ccf [2021-02-24 00:21:21,930 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:21:21,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:21:21,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:21:21,949 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:21:21,953 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:21:21,954 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:21:21" (1/1) ... [2021-02-24 00:21:21,956 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dcf8fc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:21, skipping insertion in model container [2021-02-24 00:21:21,957 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:21:21" (1/1) ... [2021-02-24 00:21:21,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:21:21,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:21:22,223 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-02-24 00:21:22,231 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:21:22,245 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:21:22,276 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+lhb-reducer.c[1238,1251] [2021-02-24 00:21:22,278 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:21:22,295 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:21:22,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:22 WrapperNode [2021-02-24 00:21:22,295 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:21:22,296 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:21:22,297 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:21:22,297 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:21:22,309 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:22" (1/1) ... [2021-02-24 00:21:22,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:22" (1/1) ... [2021-02-24 00:21:22,316 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:22" (1/1) ... [2021-02-24 00:21:22,317 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:22" (1/1) ... [2021-02-24 00:21:22,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:22" (1/1) ... [2021-02-24 00:21:22,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:22" (1/1) ... [2021-02-24 00:21:22,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:22" (1/1) ... [2021-02-24 00:21:22,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:21:22,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:21:22,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:21:22,330 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:21:22,331 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:22" (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 [2021-02-24 00:21:22,425 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:21:22,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:21:22,426 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:21:22,426 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:21:22,426 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:21:22,426 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:21:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:21:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:21:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:21:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:21:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:21:22,427 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:21:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:21:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:21:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:21:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:21:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:21:22,428 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:21:22,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:21:22,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:21:22,809 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 00:21:22,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:21:22 BoogieIcfgContainer [2021-02-24 00:21:22,810 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:21:22,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:21:22,816 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:21:22,827 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:21:22,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:21:21" (1/3) ... [2021-02-24 00:21:22,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28dd63cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:21:22, skipping insertion in model container [2021-02-24 00:21:22,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:22" (2/3) ... [2021-02-24 00:21:22,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@28dd63cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:21:22, skipping insertion in model container [2021-02-24 00:21:22,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:21:22" (3/3) ... [2021-02-24 00:21:22,831 INFO L111 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+lhb-reducer.c [2021-02-24 00:21:22,838 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:21:22,844 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:21:22,864 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:21:22,888 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:21:22,888 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:21:22,889 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:21:22,889 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:21:22,889 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:21:22,889 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:21:22,889 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:21:22,889 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:21:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-24 00:21:22,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 00:21:22,920 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:21:22,921 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:21:22,921 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:21:22,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:21:22,929 INFO L82 PathProgramCache]: Analyzing trace with hash -415268847, now seen corresponding path program 1 times [2021-02-24 00:21:22,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:21:22,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441112336] [2021-02-24 00:21:22,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:21:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:23,202 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:23,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:23,206 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:23,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:21:23,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:23,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:21:23,266 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:23,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:21:23,292 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:23,293 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:21:23,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:23,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:23,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:23,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:23,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:23,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:23,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:21:23,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:23,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:23,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:23,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:21:23,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441112336] [2021-02-24 00:21:23,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:21:23,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 00:21:23,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056637651] [2021-02-24 00:21:23,521 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:21:23,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:21:23,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:21:23,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:21:23,548 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 9 states. [2021-02-24 00:21:24,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:24,093 INFO L93 Difference]: Finished difference Result 73 states and 78 transitions. [2021-02-24 00:21:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:21:24,095 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2021-02-24 00:21:24,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:24,104 INFO L225 Difference]: With dead ends: 73 [2021-02-24 00:21:24,105 INFO L226 Difference]: Without dead ends: 44 [2021-02-24 00:21:24,108 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:21:24,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2021-02-24 00:21:24,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2021-02-24 00:21:24,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-24 00:21:24,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2021-02-24 00:21:24,155 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 36 [2021-02-24 00:21:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:24,156 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2021-02-24 00:21:24,156 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:21:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2021-02-24 00:21:24,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 00:21:24,157 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:21:24,158 INFO L422 BasicCegarLoop]: trace histogram [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] [2021-02-24 00:21:24,158 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:21:24,158 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:21:24,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:21:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1860062218, now seen corresponding path program 1 times [2021-02-24 00:21:24,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:21:24,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988140500] [2021-02-24 00:21:24,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:21:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:24,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:24,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,242 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:21:24,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,246 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:21:24,250 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:21:24,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,256 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:21:24,263 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:21:24,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,272 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:21:24,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,281 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:24,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:24,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:24,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:21:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:24,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:24,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:21:24,351 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988140500] [2021-02-24 00:21:24,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:21:24,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-02-24 00:21:24,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351755456] [2021-02-24 00:21:24,354 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-24 00:21:24,354 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:21:24,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-24 00:21:24,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-02-24 00:21:24,355 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 11 states. [2021-02-24 00:21:24,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:24,660 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-02-24 00:21:24,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:21:24,660 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2021-02-24 00:21:24,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:24,662 INFO L225 Difference]: With dead ends: 57 [2021-02-24 00:21:24,662 INFO L226 Difference]: Without dead ends: 50 [2021-02-24 00:21:24,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=216, Unknown=0, NotChecked=0, Total=272 [2021-02-24 00:21:24,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-24 00:21:24,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2021-02-24 00:21:24,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2021-02-24 00:21:24,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-02-24 00:21:24,675 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 42 [2021-02-24 00:21:24,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:24,675 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-02-24 00:21:24,676 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-24 00:21:24,676 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-02-24 00:21:24,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-02-24 00:21:24,677 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:21:24,678 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2021-02-24 00:21:24,678 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:21:24,678 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:21:24,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:21:24,679 INFO L82 PathProgramCache]: Analyzing trace with hash -112941029, now seen corresponding path program 2 times [2021-02-24 00:21:24,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:21:24,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [130495046] [2021-02-24 00:21:24,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:21:24,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:24,729 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:24,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,731 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:21:24,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:21:24,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 00:21:24,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,745 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:21:24,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:24,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:24,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:24,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:21:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:24,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:24,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:24,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-24 00:21:24,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [130495046] [2021-02-24 00:21:24,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:21:24,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 00:21:24,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794613041] [2021-02-24 00:21:24,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:21:24,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:21:24,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:21:24,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:21:24,820 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 9 states. [2021-02-24 00:21:25,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:25,104 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-02-24 00:21:25,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-02-24 00:21:25,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2021-02-24 00:21:25,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:25,105 INFO L225 Difference]: With dead ends: 49 [2021-02-24 00:21:25,106 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:21:25,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2021-02-24 00:21:25,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:21:25,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:21:25,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:21:25,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:21:25,107 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 48 [2021-02-24 00:21:25,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:25,108 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:21:25,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:21:25,108 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:21:25,108 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:21:25,108 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:21:25,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:21:25,938 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-24 00:21:25,938 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-24 00:21:25,938 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-24 00:21:25,939 INFO L192 CegarLoopUtils]: At program point L4-3(line 4) the Hoare annotation is: true [2021-02-24 00:21:25,939 INFO L192 CegarLoopUtils]: At program point L4-4(line 4) the Hoare annotation is: true [2021-02-24 00:21:25,939 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:25,939 INFO L192 CegarLoopUtils]: At program point L4-5(line 4) the Hoare annotation is: true [2021-02-24 00:21:25,939 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:25,939 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:21:25,939 INFO L192 CegarLoopUtils]: At program point L13(line 13) the Hoare annotation is: true [2021-02-24 00:21:25,940 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 00:21:25,940 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)|) (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= ~__return_65~0 |old(~__return_65~0)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-24 00:21:25,940 INFO L192 CegarLoopUtils]: At program point L4(line 4) the Hoare annotation is: true [2021-02-24 00:21:25,940 INFO L192 CegarLoopUtils]: At program point L4-1(line 4) the Hoare annotation is: true [2021-02-24 00:21:25,940 INFO L192 CegarLoopUtils]: At program point L4-2(line 4) the Hoare annotation is: true [2021-02-24 00:21:25,940 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:21:25,941 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:21:25,941 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:25,941 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:21:25,941 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:21:25,941 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-02-24 00:21:25,941 INFO L189 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-02-24 00:21:25,942 INFO L189 CegarLoopUtils]: For program point L7-1(line 7) no Hoare annotation was computed. [2021-02-24 00:21:25,942 INFO L189 CegarLoopUtils]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2021-02-24 00:21:25,942 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-02-24 00:21:25,942 INFO L185 CegarLoopUtils]: At program point L62(line 62) the Hoare annotation is: (not (= main_~__VERIFIER_assert__cond~0 0)) [2021-02-24 00:21:25,942 INFO L185 CegarLoopUtils]: At program point L58(line 58) the Hoare annotation is: false [2021-02-24 00:21:25,942 INFO L185 CegarLoopUtils]: At program point mainEXIT(lines 14 74) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0))) [2021-02-24 00:21:25,943 INFO L185 CegarLoopUtils]: At program point L54(line 54) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and .cse0 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))))) [2021-02-24 00:21:25,943 INFO L185 CegarLoopUtils]: At program point L52(line 52) the Hoare annotation is: (or (and (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))) (and (<= 2 main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0))) [2021-02-24 00:21:25,943 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-24 00:21:25,943 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-24 00:21:25,943 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2021-02-24 00:21:25,944 INFO L185 CegarLoopUtils]: At program point L19-2(line 19) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-24 00:21:25,944 INFO L185 CegarLoopUtils]: At program point L46(lines 33 67) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2021-02-24 00:21:25,944 INFO L185 CegarLoopUtils]: At program point mainFINAL(lines 14 74) the Hoare annotation is: (or (not (= main_~__VERIFIER_assert__cond~0 0)) (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0))) [2021-02-24 00:21:25,944 INFO L185 CegarLoopUtils]: At program point L44(line 44) the Hoare annotation is: (<= (+ main_~main__x~0 1) main_~main__y~0) [2021-02-24 00:21:25,944 INFO L185 CegarLoopUtils]: At program point L42(line 42) the Hoare annotation is: (and (<= (+ main_~main__x~0 1) 0) (<= (+ main_~main__x~0 2) main_~main__y~0)) [2021-02-24 00:21:25,944 INFO L185 CegarLoopUtils]: At program point L40(lines 40 66) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2021-02-24 00:21:25,945 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) main_~main__y~0)) [2021-02-24 00:21:25,945 INFO L185 CegarLoopUtils]: At program point L34(line 34) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-24 00:21:25,945 INFO L185 CegarLoopUtils]: At program point L32(lines 32 71) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-24 00:21:25,945 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 57) the Hoare annotation is: false [2021-02-24 00:21:25,945 INFO L185 CegarLoopUtils]: At program point L63(line 63) the Hoare annotation is: (not (= main_~__VERIFIER_assert__cond~0 0)) [2021-02-24 00:21:25,946 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 14 74) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2021-02-24 00:21:25,946 INFO L185 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= 51 main_~main__y~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-24 00:21:25,946 INFO L185 CegarLoopUtils]: At program point L26(lines 26 72) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-24 00:21:25,946 INFO L185 CegarLoopUtils]: At program point L57(line 57) the Hoare annotation is: false [2021-02-24 00:21:25,946 INFO L185 CegarLoopUtils]: At program point L55(lines 55 64) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0))) (.cse1 (not (= main_~__VERIFIER_assert__cond~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 .cse1 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and .cse0 .cse1 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))))) [2021-02-24 00:21:25,947 INFO L185 CegarLoopUtils]: At program point L22(line 22) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-24 00:21:25,947 INFO L185 CegarLoopUtils]: At program point L53(line 53) the Hoare annotation is: (let ((.cse0 (not (= main_~__tmp_1~0 0)))) (or (and (<= 2 main_~main__y~0) .cse0 (<= (+ main_~main__x~0 2) main_~main__y~0)) (and .cse0 (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))))) [2021-02-24 00:21:25,947 INFO L185 CegarLoopUtils]: At program point L20(lines 20 73) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) 0)) [2021-02-24 00:21:25,947 INFO L185 CegarLoopUtils]: At program point L51(line 51) the Hoare annotation is: (or (and (<= 27 main_~main__y~0) (<= (+ main_~main__x~0 53) (* 2 main_~main__y~0))) (and (<= 2 main_~main__y~0) (<= (+ main_~main__x~0 2) main_~main__y~0))) [2021-02-24 00:21:25,947 INFO L185 CegarLoopUtils]: At program point L18(line 18) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0)) [2021-02-24 00:21:25,948 INFO L185 CegarLoopUtils]: At program point L45(line 45) the Hoare annotation is: (<= (+ main_~main__x~0 2) main_~main__y~0) [2021-02-24 00:21:25,948 INFO L185 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (<= (+ main_~main__x~0 1) main_~main__y~0) [2021-02-24 00:21:25,948 INFO L185 CegarLoopUtils]: At program point L70(line 70) the Hoare annotation is: false [2021-02-24 00:21:25,948 INFO L185 CegarLoopUtils]: At program point L37(line 37) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 51) main_~main__y~0)) [2021-02-24 00:21:25,948 INFO L185 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: (and (= ~__tmp_55_0~0 |old(~__tmp_55_0~0)|) (= |old(~__return_65~0)| ~__return_65~0) (<= (+ main_~main__x~0 50) main_~main__y~0)) [2021-02-24 00:21:25,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:21:25 BoogieIcfgContainer [2021-02-24 00:21:25,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:21:25,968 INFO L168 Benchmark]: Toolchain (without parser) took 4035.25 ms. Allocated memory was 176.2 MB in the beginning and 228.6 MB in the end (delta: 52.4 MB). Free memory was 151.5 MB in the beginning and 198.0 MB in the end (delta: -46.5 MB). Peak memory consumption was 125.9 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:25,969 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 176.2 MB. Free memory was 159.6 MB in the beginning and 159.4 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:21:25,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.33 ms. Allocated memory is still 176.2 MB. Free memory was 150.4 MB in the beginning and 140.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:25,970 INFO L168 Benchmark]: Boogie Preprocessor took 32.21 ms. Allocated memory is still 176.2 MB. Free memory was 140.6 MB in the beginning and 139.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:25,971 INFO L168 Benchmark]: RCFGBuilder took 481.22 ms. Allocated memory is still 176.2 MB. Free memory was 139.3 MB in the beginning and 157.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:25,972 INFO L168 Benchmark]: TraceAbstraction took 3150.69 ms. Allocated memory was 176.2 MB in the beginning and 228.6 MB in the end (delta: 52.4 MB). Free memory was 156.8 MB in the beginning and 198.0 MB in the end (delta: -41.2 MB). Peak memory consumption was 131.3 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:25,976 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 176.2 MB. Free memory was 159.6 MB in the beginning and 159.4 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 347.33 ms. Allocated memory is still 176.2 MB. Free memory was 150.4 MB in the beginning and 140.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 32.21 ms. Allocated memory is still 176.2 MB. Free memory was 140.6 MB in the beginning and 139.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 481.22 ms. Allocated memory is still 176.2 MB. Free memory was 139.3 MB in the beginning and 157.3 MB in the end (delta: -18.0 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3150.69 ms. Allocated memory was 176.2 MB in the beginning and 228.6 MB in the end (delta: 52.4 MB). Free memory was 156.8 MB in the beginning and 198.0 MB in the end (delta: -41.2 MB). Peak memory consumption was 131.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 57]: 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: 33]: Loop Invariant Derived loop invariant: main__x + 2 <= main__y - ProcedureContractResult [Line: 14]: Procedure Contract for main Derived contract for procedure main: !(__VERIFIER_assert__cond == 0) || ((__tmp_55_0 == \old(__tmp_55_0) && \old(__return_65) == __return_65) && main__x + 50 <= 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.2s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 135 SDslu, 373 SDs, 0 SdLazy, 422 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred 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, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 51 LocationsWithAnnotation, 51 PreInvPairs, 81 NumberOfFragments, 443 HoareAnnotationTreeSize, 51 FomulaSimplifications, 179 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 51 FomulaSimplificationsInter, 768 FormulaSimplificationTreeSizeReductionInter, 0.7s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 123 ConstructedInterpolants, 0 QuantifiedInterpolants, 17681 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 10/12 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...