/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/jm2006.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:21:28,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:21:28,490 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:21:28,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 00:21:28,630 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 00:21:28,652 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:21:28,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:21:28,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:21:28,657 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:21:28,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:21:28,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:21:28,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:21:28,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:21:28,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:21:28,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:21:28,659 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:21:28,659 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:21:28,659 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:21:28,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:21:28,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:21:28,660 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:21:28,660 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:21:28,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:21:28,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:21:28,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:21:28,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:21:28,662 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:21:28,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:21:29,050 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:21:29,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:21:29,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:21:29,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:21:29,097 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:21:29,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.i [2021-02-24 00:21:29,181 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626358124/296b2208268a4b5ea7da3e607b2c449c/FLAG4db3a0c4c [2021-02-24 00:21:29,805 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:21:29,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.i [2021-02-24 00:21:29,813 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626358124/296b2208268a4b5ea7da3e607b2c449c/FLAG4db3a0c4c [2021-02-24 00:21:30,182 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/626358124/296b2208268a4b5ea7da3e607b2c449c [2021-02-24 00:21:30,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:21:30,198 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:21:30,200 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:21:30,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:21:30,204 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:21:30,205 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:21:30" (1/1) ... [2021-02-24 00:21:30,206 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9322f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:30, skipping insertion in model container [2021-02-24 00:21:30,206 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:21:30" (1/1) ... [2021-02-24 00:21:30,214 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:21:30,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:21:30,376 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/jm2006.i[895,908] [2021-02-24 00:21:30,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:21:30,397 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:21:30,412 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/jm2006.i[895,908] [2021-02-24 00:21:30,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:21:30,432 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:21:30,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:30 WrapperNode [2021-02-24 00:21:30,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:21:30,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:21:30,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:21:30,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:21:30,447 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:30" (1/1) ... [2021-02-24 00:21:30,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:30" (1/1) ... [2021-02-24 00:21:30,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:30" (1/1) ... [2021-02-24 00:21:30,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:30" (1/1) ... [2021-02-24 00:21:30,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:30" (1/1) ... [2021-02-24 00:21:30,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:30" (1/1) ... [2021-02-24 00:21:30,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:30" (1/1) ... [2021-02-24 00:21:30,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:21:30,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:21:30,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:21:30,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:21:30,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:30" (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 00:21:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:21:30,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:21:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:21:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:21:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:21:30,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:21:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:21:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:21:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-24 00:21:30,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-24 00:21:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:21:30,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:21:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:21:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:21:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:21:30,581 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:21:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:21:30,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:21:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:21:30,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:21:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:21:30,584 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:21:30,889 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:21:30,890 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 00:21:30,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:21:30 BoogieIcfgContainer [2021-02-24 00:21:30,892 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:21:30,893 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:21:30,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:21:30,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:21:30,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:21:30" (1/3) ... [2021-02-24 00:21:30,898 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126d72db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:21:30, skipping insertion in model container [2021-02-24 00:21:30,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:21:30" (2/3) ... [2021-02-24 00:21:30,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@126d72db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:21:30, skipping insertion in model container [2021-02-24 00:21:30,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:21:30" (3/3) ... [2021-02-24 00:21:30,904 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.i [2021-02-24 00:21:30,918 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:21:30,926 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:21:30,951 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:21:31,009 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:21:31,010 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:21:31,010 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:21:31,010 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:21:31,010 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:21:31,010 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:21:31,010 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:21:31,010 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:21:31,053 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2021-02-24 00:21:31,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-24 00:21:31,063 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:21:31,064 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] [2021-02-24 00:21:31,064 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:21:31,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:21:31,071 INFO L82 PathProgramCache]: Analyzing trace with hash 1564133724, now seen corresponding path program 1 times [2021-02-24 00:21:31,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:21:31,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341961470] [2021-02-24 00:21:31,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:21:31,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:31,289 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:31,292 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:31,294 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:31,296 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:31,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:21:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:31,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:31,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:31,460 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 00:21:31,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341961470] [2021-02-24 00:21:31,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:21:31,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:21:31,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156823365] [2021-02-24 00:21:31,470 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:21:31,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:21:31,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:21:31,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:21:31,488 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 3 states. [2021-02-24 00:21:31,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:31,589 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2021-02-24 00:21:31,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:21:31,592 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-02-24 00:21:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:31,601 INFO L225 Difference]: With dead ends: 57 [2021-02-24 00:21:31,601 INFO L226 Difference]: Without dead ends: 35 [2021-02-24 00:21:31,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:21:31,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-24 00:21:31,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-02-24 00:21:31,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-24 00:21:31,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-02-24 00:21:31,655 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2021-02-24 00:21:31,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:31,656 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-02-24 00:21:31,656 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:21:31,656 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-02-24 00:21:31,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-24 00:21:31,657 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:21:31,657 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] [2021-02-24 00:21:31,658 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:21:31,658 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:21:31,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:21:31,659 INFO L82 PathProgramCache]: Analyzing trace with hash 1277842214, now seen corresponding path program 1 times [2021-02-24 00:21:31,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:21:31,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069308232] [2021-02-24 00:21:31,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:21:31,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:31,738 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:31,739 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:31,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:31,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:21:31,786 WARN L141 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-02-24 00:21:31,791 WARN L147 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size 25 [2021-02-24 00:21:31,834 WARN L141 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-02-24 00:21:31,837 WARN L147 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size 21 [2021-02-24 00:21:31,884 WARN L141 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size [2021-02-24 00:21:31,886 WARN L147 QuantifierPusher]: treesize reduction 9, result has 50.0 percent of original size 9 [2021-02-24 00:21:31,934 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:31,936 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:31,969 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:31,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:31,992 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:31,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:32,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:21:32,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:32,061 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:32,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:32,066 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 00:21:32,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069308232] [2021-02-24 00:21:32,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:21:32,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 00:21:32,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436239298] [2021-02-24 00:21:32,069 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 00:21:32,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:21:32,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 00:21:32,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 00:21:32,070 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 9 states. [2021-02-24 00:21:32,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:32,613 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-02-24 00:21:32,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-02-24 00:21:32,614 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 28 [2021-02-24 00:21:32,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:32,616 INFO L225 Difference]: With dead ends: 44 [2021-02-24 00:21:32,616 INFO L226 Difference]: Without dead ends: 38 [2021-02-24 00:21:32,618 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2021-02-24 00:21:32,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-24 00:21:32,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2021-02-24 00:21:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-02-24 00:21:32,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2021-02-24 00:21:32,631 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 28 [2021-02-24 00:21:32,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:32,631 INFO L480 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2021-02-24 00:21:32,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 00:21:32,632 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2021-02-24 00:21:32,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-24 00:21:32,633 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:21:32,633 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] [2021-02-24 00:21:32,633 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:21:32,634 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:21:32,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:21:32,634 INFO L82 PathProgramCache]: Analyzing trace with hash -2110274610, now seen corresponding path program 1 times [2021-02-24 00:21:32,635 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:21:32,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772847776] [2021-02-24 00:21:32,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:21:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:32,701 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:32,702 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:32,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:32,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:21:32,712 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:32,713 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:21:32,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:32,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 00:21:32,735 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:32,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:21:32,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:32,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-24 00:21:32,769 WARN L141 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size [2021-02-24 00:21:32,770 WARN L147 QuantifierPusher]: treesize reduction 6, result has 80.6 percent of original size 25 [2021-02-24 00:21:32,796 WARN L141 QuantifierPusher]: treesize reduction 6, result has 77.8 percent of original size [2021-02-24 00:21:32,797 WARN L147 QuantifierPusher]: treesize reduction 6, result has 77.8 percent of original size 21 [2021-02-24 00:21:32,823 WARN L141 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size [2021-02-24 00:21:32,824 WARN L147 QuantifierPusher]: treesize reduction 11, result has 45.0 percent of original size 9 [2021-02-24 00:21:32,843 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:32,843 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:32,858 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:32,858 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 00:21:32,877 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:32,878 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:32,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:21:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:21:32,924 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:21:32,925 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:21:32,931 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:21:32,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772847776] [2021-02-24 00:21:32,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-02-24 00:21:32,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2021-02-24 00:21:32,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547749519] [2021-02-24 00:21:32,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2021-02-24 00:21:32,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:21:32,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-02-24 00:21:32,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-02-24 00:21:32,934 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 13 states. [2021-02-24 00:21:33,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:21:33,598 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-02-24 00:21:33,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-02-24 00:21:33,598 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2021-02-24 00:21:33,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:21:33,599 INFO L225 Difference]: With dead ends: 38 [2021-02-24 00:21:33,599 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 00:21:33,600 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2021-02-24 00:21:33,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 00:21:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 00:21:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 00:21:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 00:21:33,601 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 35 [2021-02-24 00:21:33,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:21:33,601 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 00:21:33,601 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2021-02-24 00:21:33,602 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 00:21:33,602 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 00:21:33,602 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:21:33,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 00:21:33,967 WARN L202 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2021-02-24 00:21:34,247 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-24 00:21:34,248 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-24 00:21:34,248 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-24 00:21:34,248 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2021-02-24 00:21:34,248 INFO L189 CegarLoopUtils]: For program point L12-3(line 12) no Hoare annotation was computed. [2021-02-24 00:21:34,248 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:34,249 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:34,249 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 12) the Hoare annotation is: true [2021-02-24 00:21:34,249 INFO L192 CegarLoopUtils]: At program point L12(line 12) the Hoare annotation is: true [2021-02-24 00:21:34,249 INFO L192 CegarLoopUtils]: At program point L12-1(line 12) the Hoare annotation is: true [2021-02-24 00:21:34,249 INFO L192 CegarLoopUtils]: At program point L12-2(line 12) the Hoare annotation is: true [2021-02-24 00:21:34,249 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-24 00:21:34,250 INFO L192 CegarLoopUtils]: At program point L12-3(line 12) the Hoare annotation is: true [2021-02-24 00:21:34,250 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:21:34,253 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 00:21:34,253 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 00:21:34,253 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 00:21:34,253 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 00:21:34,254 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-24 00:21:34,254 INFO L189 CegarLoopUtils]: For program point L15-1(line 15) no Hoare annotation was computed. [2021-02-24 00:21:34,254 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:21:34,254 INFO L189 CegarLoopUtils]: For program point L15-3(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:21:34,254 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-24 00:21:34,254 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-02-24 00:21:34,255 INFO L185 CegarLoopUtils]: At program point L33-1(line 33) the Hoare annotation is: (let ((.cse1 (+ main_~i~0 |main_#t~post6|)) (.cse2 (+ main_~i~0 main_~y~0)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse0 .cse2) (<= .cse1 .cse0) (<= .cse2 .cse0))) [2021-02-24 00:21:34,255 INFO L185 CegarLoopUtils]: At program point L33-2(line 33) the Hoare annotation is: (let ((.cse3 (+ main_~x~0 main_~j~0)) (.cse2 (+ main_~i~0 main_~y~0)) (.cse1 (+ main_~i~0 |main_#t~post6|)) (.cse0 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse2 .cse3) (<= .cse3 .cse2) (<= .cse1 .cse0))) [2021-02-24 00:21:34,255 INFO L192 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-02-24 00:21:34,255 INFO L185 CegarLoopUtils]: At program point L31-2(lines 31 34) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-02-24 00:21:34,255 INFO L185 CegarLoopUtils]: At program point L31-3(lines 24 39) the Hoare annotation is: (let ((.cse2 (+ main_~i~0 main_~y~0)) (.cse6 (+ main_~x~0 main_~j~0))) (let ((.cse4 (<= .cse2 .cse6)) (.cse0 (<= .cse6 .cse2)) (.cse1 (< 0 (+ main_~y~0 1))) (.cse3 (<= main_~y~0 0))) (or (and (or .cse0 .cse1) (or (<= .cse2 main_~j~0) .cse3) (or (<= main_~j~0 .cse2) .cse1) (or .cse4 .cse3) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) (let ((.cse5 (+ main_~y~0 main_~i~0))) (and .cse4 .cse0 (or (<= main_~j~0 .cse5) .cse1) (or .cse3 (<= .cse5 main_~j~0))))))) [2021-02-24 00:21:34,256 INFO L192 CegarLoopUtils]: At program point L27(line 27) the Hoare annotation is: true [2021-02-24 00:21:34,256 INFO L192 CegarLoopUtils]: At program point L27-1(line 27) the Hoare annotation is: true [2021-02-24 00:21:34,256 INFO L192 CegarLoopUtils]: At program point L25(line 25) the Hoare annotation is: true [2021-02-24 00:21:34,258 INFO L192 CegarLoopUtils]: At program point L27-2(line 27) the Hoare annotation is: true [2021-02-24 00:21:34,258 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 24 39) the Hoare annotation is: true [2021-02-24 00:21:34,258 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 24 39) the Hoare annotation is: true [2021-02-24 00:21:34,259 INFO L185 CegarLoopUtils]: At program point L36(line 36) the Hoare annotation is: (let ((.cse0 (<= main_~y~0 0)) (.cse1 (< 0 (+ main_~y~0 1)))) (or (and .cse0 (<= main_~i~0 main_~x~0) .cse1 (<= main_~x~0 main_~i~0)) (let ((.cse3 (+ main_~x~0 main_~j~0)) (.cse2 (+ main_~i~0 main_~y~0))) (and (<= .cse2 .cse3) (<= .cse3 .cse2) .cse0 .cse1)))) [2021-02-24 00:21:34,259 INFO L185 CegarLoopUtils]: At program point L32(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-02-24 00:21:34,259 INFO L185 CegarLoopUtils]: At program point L32-1(line 32) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~i~0 main_~y~0)) (.cse2 (+ main_~j~0 |main_#t~post5|))) (and (<= .cse0 .cse1) (<= .cse2 .cse0) (<= .cse1 .cse0) (<= .cse0 .cse2))) [2021-02-24 00:21:34,259 INFO L185 CegarLoopUtils]: At program point L30(line 30) the Hoare annotation is: (and (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) [2021-02-24 00:21:34,259 INFO L185 CegarLoopUtils]: At program point L32-2(line 32) the Hoare annotation is: (let ((.cse0 (+ main_~j~0 |main_#t~post5|)) (.cse1 (+ main_~i~0 main_~y~0)) (.cse2 (+ main_~x~0 main_~j~0 1))) (and (<= .cse0 .cse1) (<= .cse2 .cse1) (<= .cse1 .cse0) (<= .cse1 .cse2))) [2021-02-24 00:21:34,259 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 39) the Hoare annotation is: true [2021-02-24 00:21:34,260 INFO L192 CegarLoopUtils]: At program point L28(line 28) the Hoare annotation is: true [2021-02-24 00:21:34,260 INFO L192 CegarLoopUtils]: At program point L28-1(line 28) the Hoare annotation is: true [2021-02-24 00:21:34,260 INFO L192 CegarLoopUtils]: At program point L26(line 26) the Hoare annotation is: true [2021-02-24 00:21:34,260 INFO L192 CegarLoopUtils]: At program point L26-1(line 26) the Hoare annotation is: true [2021-02-24 00:21:34,260 INFO L192 CegarLoopUtils]: At program point L26-2(line 26) the Hoare annotation is: true [2021-02-24 00:21:34,260 INFO L192 CegarLoopUtils]: At program point L35(lines 35 37) the Hoare annotation is: true [2021-02-24 00:21:34,260 INFO L192 CegarLoopUtils]: At program point L18-2(lines 17 22) the Hoare annotation is: true [2021-02-24 00:21:34,261 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-24 00:21:34,261 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: true [2021-02-24 00:21:34,264 INFO L185 CegarLoopUtils]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:21:34,264 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:21:34,264 INFO L185 CegarLoopUtils]: At program point L18(lines 18 20) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2021-02-24 00:21:34,265 INFO L185 CegarLoopUtils]: At program point L19-1(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2021-02-24 00:21:34,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:21:34 BoogieIcfgContainer [2021-02-24 00:21:34,297 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:21:34,298 INFO L168 Benchmark]: Toolchain (without parser) took 4111.34 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 126.5 MB in the beginning and 120.2 MB in the end (delta: 6.3 MB). Peak memory consumption was 99.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:34,299 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 129.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:21:34,299 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.12 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:34,300 INFO L168 Benchmark]: Boogie Preprocessor took 36.04 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:34,301 INFO L168 Benchmark]: RCFGBuilder took 421.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 98.4 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:34,302 INFO L168 Benchmark]: TraceAbstraction took 3403.39 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 98.0 MB in the beginning and 120.2 MB in the end (delta: -22.2 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. [2021-02-24 00:21:34,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 129.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 233.12 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 115.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.04 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 114.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 421.02 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 98.4 MB in the end (delta: 15.9 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3403.39 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 98.0 MB in the beginning and 120.2 MB in the end (delta: -22.2 MB). Peak memory consumption was 69.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 31]: Loop Invariant Derived loop invariant: i + y <= x + j && x + j <= i + y - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 99 SDtfs, 108 SDslu, 164 SDs, 0 SdLazy, 296 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred 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, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 44 LocationsWithAnnotation, 58 PreInvPairs, 74 NumberOfFragments, 375 HoareAnnotationTreeSize, 58 FomulaSimplifications, 500 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 44 FomulaSimplificationsInter, 741 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 91 NumberOfCodeBlocks, 91 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 88 ConstructedInterpolants, 0 QuantifiedInterpolants, 12506 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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...