/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/test29-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-24 01:05:19,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-24 01:05:19,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-24 01:05:19,397 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-24 01:05:19,411 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-24 01:05:19,413 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-24 01:05:19,415 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-24 01:05:19,416 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-24 01:05:19,417 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-24 01:05:19,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-24 01:05:19,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-24 01:05:19,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-24 01:05:19,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-24 01:05:19,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-24 01:05:19,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-24 01:05:19,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-24 01:05:19,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-24 01:05:19,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-24 01:05:19,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-24 01:05:19,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-24 01:05:19,474 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-24 01:05:19,497 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-24 01:05:19,497 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-24 01:05:19,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-24 01:05:19,503 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-24 01:05:19,503 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-24 01:05:19,503 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-24 01:05:19,503 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-24 01:05:19,504 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-24 01:05:19,504 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-24 01:05:19,504 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-24 01:05:19,505 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-24 01:05:19,505 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-24 01:05:19,505 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-24 01:05:19,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-24 01:05:19,506 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-24 01:05:19,506 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-24 01:05:19,506 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-24 01:05:19,506 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-24 01:05:19,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:05:19,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-24 01:05:19,507 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-24 01:05:19,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-24 01:05:19,507 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-10-24 01:05:19,953 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-24 01:05:20,014 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-24 01:05:20,018 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-24 01:05:20,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-24 01:05:20,020 INFO L275 PluginConnector]: CDTParser initialized [2020-10-24 01:05:20,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test29-2.c [2020-10-24 01:05:20,114 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed58b8e7c/382062b0d8fc41b9a45e88c1a6b3a2f5/FLAGfe481aada [2020-10-24 01:05:20,804 INFO L306 CDTParser]: Found 1 translation units. [2020-10-24 01:05:20,805 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test29-2.c [2020-10-24 01:05:20,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed58b8e7c/382062b0d8fc41b9a45e88c1a6b3a2f5/FLAGfe481aada [2020-10-24 01:05:21,166 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed58b8e7c/382062b0d8fc41b9a45e88c1a6b3a2f5 [2020-10-24 01:05:21,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-24 01:05:21,176 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-24 01:05:21,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-24 01:05:21,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-24 01:05:21,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-24 01:05:21,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:05:21" (1/1) ... [2020-10-24 01:05:21,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@78424f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:21, skipping insertion in model container [2020-10-24 01:05:21,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:05:21" (1/1) ... [2020-10-24 01:05:21,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-24 01:05:21,220 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-24 01:05:21,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:05:21,402 INFO L203 MainTranslator]: Completed pre-run [2020-10-24 01:05:21,422 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-24 01:05:21,438 INFO L208 MainTranslator]: Completed translation [2020-10-24 01:05:21,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:21 WrapperNode [2020-10-24 01:05:21,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-24 01:05:21,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-24 01:05:21,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-24 01:05:21,441 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-24 01:05:21,453 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:21" (1/1) ... [2020-10-24 01:05:21,454 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:21" (1/1) ... [2020-10-24 01:05:21,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:21" (1/1) ... [2020-10-24 01:05:21,461 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:21" (1/1) ... [2020-10-24 01:05:21,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:21" (1/1) ... [2020-10-24 01:05:21,470 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:21" (1/1) ... [2020-10-24 01:05:21,471 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:21" (1/1) ... [2020-10-24 01:05:21,474 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-24 01:05:21,475 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-24 01:05:21,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-24 01:05:21,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-24 01:05:21,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-24 01:05:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-24 01:05:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-24 01:05:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-24 01:05:21,566 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-24 01:05:21,566 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-24 01:05:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-24 01:05:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-24 01:05:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-24 01:05:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-24 01:05:21,567 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-24 01:05:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-24 01:05:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-24 01:05:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-24 01:05:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-24 01:05:21,568 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-24 01:05:21,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-24 01:05:21,829 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-24 01:05:21,830 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-24 01:05:21,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:05:21 BoogieIcfgContainer [2020-10-24 01:05:21,833 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-24 01:05:21,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-24 01:05:21,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-24 01:05:21,840 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-24 01:05:21,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:05:21" (1/3) ... [2020-10-24 01:05:21,841 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff333e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:05:21, skipping insertion in model container [2020-10-24 01:05:21,841 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:05:21" (2/3) ... [2020-10-24 01:05:21,842 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ff333e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:05:21, skipping insertion in model container [2020-10-24 01:05:21,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:05:21" (3/3) ... [2020-10-24 01:05:21,843 INFO L111 eAbstractionObserver]: Analyzing ICFG test29-2.c [2020-10-24 01:05:21,860 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-24 01:05:21,866 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-24 01:05:21,911 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-24 01:05:21,966 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-24 01:05:21,966 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-24 01:05:21,966 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-24 01:05:21,967 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-24 01:05:21,967 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-24 01:05:21,967 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-24 01:05:21,967 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-24 01:05:21,967 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-24 01:05:22,008 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states. [2020-10-24 01:05:22,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-24 01:05:22,026 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:05:22,027 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] [2020-10-24 01:05:22,027 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:05:22,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:05:22,035 INFO L82 PathProgramCache]: Analyzing trace with hash -866172814, now seen corresponding path program 1 times [2020-10-24 01:05:22,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:05:22,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303836039] [2020-10-24 01:05:22,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:05:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:22,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:05:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:22,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:05:22,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303836039] [2020-10-24 01:05:22,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:05:22,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-24 01:05:22,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661152920] [2020-10-24 01:05:22,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-24 01:05:22,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:05:22,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-24 01:05:22,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 01:05:22,563 INFO L87 Difference]: Start difference. First operand 54 states. Second operand 4 states. [2020-10-24 01:05:22,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:05:22,733 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-10-24 01:05:22,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-24 01:05:22,735 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-24 01:05:22,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:05:22,745 INFO L225 Difference]: With dead ends: 64 [2020-10-24 01:05:22,745 INFO L226 Difference]: Without dead ends: 35 [2020-10-24 01:05:22,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-24 01:05:22,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-24 01:05:22,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-24 01:05:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-24 01:05:22,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-24 01:05:22,797 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 30 [2020-10-24 01:05:22,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:05:22,797 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-24 01:05:22,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-24 01:05:22,798 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-24 01:05:22,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-24 01:05:22,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:05:22,799 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] [2020-10-24 01:05:22,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-24 01:05:22,800 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:05:22,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:05:22,801 INFO L82 PathProgramCache]: Analyzing trace with hash 329830933, now seen corresponding path program 1 times [2020-10-24 01:05:22,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:05:22,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384619541] [2020-10-24 01:05:22,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:05:22,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:22,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:05:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:23,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:05:23,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384619541] [2020-10-24 01:05:23,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:05:23,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 01:05:23,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333038657] [2020-10-24 01:05:23,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:05:23,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:05:23,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:05:23,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:05:23,034 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 8 states. [2020-10-24 01:05:23,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:05:23,294 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-10-24 01:05:23,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 01:05:23,294 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-24 01:05:23,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:05:23,296 INFO L225 Difference]: With dead ends: 49 [2020-10-24 01:05:23,296 INFO L226 Difference]: Without dead ends: 33 [2020-10-24 01:05:23,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-24 01:05:23,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-24 01:05:23,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-24 01:05:23,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-24 01:05:23,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2020-10-24 01:05:23,310 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 32 [2020-10-24 01:05:23,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:05:23,310 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2020-10-24 01:05:23,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:05:23,311 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2020-10-24 01:05:23,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-24 01:05:23,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-24 01:05:23,312 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] [2020-10-24 01:05:23,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-24 01:05:23,313 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-24 01:05:23,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-24 01:05:23,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1650383189, now seen corresponding path program 1 times [2020-10-24 01:05:23,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-24 01:05:23,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367906469] [2020-10-24 01:05:23,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-24 01:05:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:23,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-24 01:05:23,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-24 01:05:23,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-24 01:05:23,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367906469] [2020-10-24 01:05:23,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-24 01:05:23,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-24 01:05:23,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674433147] [2020-10-24 01:05:23,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-24 01:05:23,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-24 01:05:23,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-24 01:05:23,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-24 01:05:23,481 INFO L87 Difference]: Start difference. First operand 33 states and 32 transitions. Second operand 8 states. [2020-10-24 01:05:23,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-24 01:05:23,674 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2020-10-24 01:05:23,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-24 01:05:23,675 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-24 01:05:23,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-24 01:05:23,678 INFO L225 Difference]: With dead ends: 33 [2020-10-24 01:05:23,678 INFO L226 Difference]: Without dead ends: 0 [2020-10-24 01:05:23,679 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2020-10-24 01:05:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-24 01:05:23,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-24 01:05:23,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-24 01:05:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-24 01:05:23,683 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2020-10-24 01:05:23,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-24 01:05:23,683 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-24 01:05:23,683 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-24 01:05:23,684 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-24 01:05:23,684 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-24 01:05:23,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-24 01:05:23,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-24 01:05:24,096 INFO L277 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-10-24 01:05:24,097 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-24 01:05:24,097 INFO L277 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-10-24 01:05:24,097 INFO L277 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-10-24 01:05:24,097 INFO L277 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-10-24 01:05:24,097 INFO L277 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-10-24 01:05:24,098 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 01:05:24,098 INFO L277 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-10-24 01:05:24,098 INFO L277 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-10-24 01:05:24,098 INFO L277 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-10-24 01:05:24,098 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-24 01:05:24,098 INFO L277 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-10-24 01:05:24,099 INFO L277 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-10-24 01:05:24,099 INFO L277 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-10-24 01:05:24,099 INFO L277 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-10-24 01:05:24,099 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-24 01:05:24,099 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-24 01:05:24,099 INFO L277 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-10-24 01:05:24,100 INFO L277 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-10-24 01:05:24,100 INFO L277 CegarLoopResult]: At program point mainEXIT(lines 13 31) the Hoare annotation is: true [2020-10-24 01:05:24,100 INFO L270 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (= main_~pd~0.base |main_~#d2~0.base|)) (.cse2 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) .cse1 (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) .cse2) (and .cse0 (not .cse1) .cse2 (not |main_#t~short10|)))) [2020-10-24 01:05:24,100 INFO L270 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2020-10-24 01:05:24,100 INFO L270 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (= |main_#t~mem9| 0) (= |main_~#d2~0.offset| main_~pd~0.offset) (= main_~pd~0.base |main_~#d2~0.base|) (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2020-10-24 01:05:24,101 INFO L270 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= main_~pd~0.base |main_~#d2~0.base|)) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2020-10-24 01:05:24,101 INFO L270 CegarLoopResult]: At program point L23-4(lines 23 25) the Hoare annotation is: (not |main_#t~short10|) [2020-10-24 01:05:24,101 INFO L270 CegarLoopResult]: At program point L23-5(line 23) the Hoare annotation is: false [2020-10-24 01:05:24,101 INFO L270 CegarLoopResult]: At program point L23-6(line 23) the Hoare annotation is: false [2020-10-24 01:05:24,101 INFO L270 CegarLoopResult]: At program point L23-7(line 23) the Hoare annotation is: (not |main_#t~short10|) [2020-10-24 01:05:24,102 INFO L270 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (= (select |#valid| |main_~#d1~0.base|) 1) [2020-10-24 01:05:24,102 INFO L277 CegarLoopResult]: At program point L23-8(line 23) the Hoare annotation is: true [2020-10-24 01:05:24,102 INFO L270 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2020-10-24 01:05:24,102 INFO L277 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: true [2020-10-24 01:05:24,102 INFO L277 CegarLoopResult]: At program point L15-3(line 15) the Hoare annotation is: true [2020-10-24 01:05:24,102 INFO L277 CegarLoopResult]: At program point L15-4(line 15) the Hoare annotation is: true [2020-10-24 01:05:24,103 INFO L277 CegarLoopResult]: At program point L15-5(line 15) the Hoare annotation is: true [2020-10-24 01:05:24,103 INFO L270 CegarLoopResult]: At program point L15-6(line 15) the Hoare annotation is: false [2020-10-24 01:05:24,103 INFO L270 CegarLoopResult]: At program point L15-7(line 15) the Hoare annotation is: false [2020-10-24 01:05:24,103 INFO L270 CegarLoopResult]: At program point L15-8(line 15) the Hoare annotation is: false [2020-10-24 01:05:24,103 INFO L270 CegarLoopResult]: At program point L15-9(line 15) the Hoare annotation is: false [2020-10-24 01:05:24,103 INFO L270 CegarLoopResult]: At program point L24(lines 14 31) the Hoare annotation is: false [2020-10-24 01:05:24,104 INFO L270 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2020-10-24 01:05:24,104 INFO L270 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2020-10-24 01:05:24,104 INFO L270 CegarLoopResult]: At program point L29(line 29) the Hoare annotation is: false [2020-10-24 01:05:24,104 INFO L270 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) .cse1) (and .cse0 (not (= main_~pd~0.base |main_~#d2~0.base|)) .cse1))) [2020-10-24 01:05:24,105 INFO L270 CegarLoopResult]: At program point L21-1(lines 18 22) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (not (= main_~pd~0.base |main_~#d2~0.base|)) .cse1) (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) (= (select (select |#memory_int| |main_~#d2~0.base|) |main_~#d2~0.offset|) 0) .cse1))) [2020-10-24 01:05:24,105 INFO L270 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2020-10-24 01:05:24,105 INFO L270 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2020-10-24 01:05:24,105 INFO L270 CegarLoopResult]: At program point L17-3(line 17) the Hoare annotation is: (and (= (select |#valid| |main_~#d1~0.base|) 1) (not (= |main_~#d1~0.base| |main_~#d2~0.base|))) [2020-10-24 01:05:24,105 INFO L270 CegarLoopResult]: At program point L17-4(line 17) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (not (= |main_#t~ite8.base| |main_~#d2~0.base|)) .cse1) (and .cse0 (= |main_~#d2~0.offset| |main_#t~ite8.offset|) .cse1))) [2020-10-24 01:05:24,106 INFO L277 CegarLoopResult]: At program point mainFINAL(lines 13 31) the Hoare annotation is: true [2020-10-24 01:05:24,106 INFO L270 CegarLoopResult]: At program point L17-5(line 17) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (= main_~pd~0.base |main_~#d2~0.base|)) (.cse2 (= |main_#t~ite8.base| |main_~#d2~0.base|)) (.cse3 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (not .cse1) (not .cse2) .cse3) (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) .cse1 .cse2 (= |main_~#d2~0.offset| |main_#t~ite8.offset|) .cse3))) [2020-10-24 01:05:24,106 INFO L270 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: false [2020-10-24 01:05:24,106 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-24 01:05:24,107 INFO L270 CegarLoopResult]: At program point L18(lines 18 22) the Hoare annotation is: (let ((.cse0 (= (select |#valid| |main_~#d1~0.base|) 1)) (.cse1 (not (= |main_~#d1~0.base| |main_~#d2~0.base|)))) (or (and .cse0 (= |main_~#d2~0.offset| main_~pd~0.offset) .cse1) (and .cse0 (not (= main_~pd~0.base |main_~#d2~0.base|)) .cse1))) [2020-10-24 01:05:24,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:05:24 BoogieIcfgContainer [2020-10-24 01:05:24,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-24 01:05:24,122 INFO L168 Benchmark]: Toolchain (without parser) took 2949.11 ms. Allocated memory was 158.3 MB in the beginning and 194.0 MB in the end (delta: 35.7 MB). Free memory was 134.1 MB in the beginning and 104.4 MB in the end (delta: 29.7 MB). Peak memory consumption was 66.1 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:24,123 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 158.3 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-24 01:05:24,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.46 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 124.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:24,125 INFO L168 Benchmark]: Boogie Preprocessor took 33.86 ms. Allocated memory is still 158.3 MB. Free memory was 124.2 MB in the beginning and 122.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:24,126 INFO L168 Benchmark]: RCFGBuilder took 358.22 ms. Allocated memory is still 158.3 MB. Free memory was 122.7 MB in the beginning and 106.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:24,127 INFO L168 Benchmark]: TraceAbstraction took 2283.49 ms. Allocated memory was 158.3 MB in the beginning and 194.0 MB in the end (delta: 35.7 MB). Free memory was 106.4 MB in the beginning and 104.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. [2020-10-24 01:05:24,130 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 158.3 MB. Free memory is still 131.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 257.46 ms. Allocated memory is still 158.3 MB. Free memory was 133.5 MB in the beginning and 124.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.86 ms. Allocated memory is still 158.3 MB. Free memory was 124.2 MB in the beginning and 122.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 358.22 ms. Allocated memory is still 158.3 MB. Free memory was 122.7 MB in the beginning and 106.8 MB in the end (delta: 15.8 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2283.49 ms. Allocated memory was 158.3 MB in the beginning and 194.0 MB in the end (delta: 35.7 MB). Free memory was 106.4 MB in the beginning and 104.4 MB in the end (delta: 2.0 MB). Peak memory consumption was 38.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 91 SDtfs, 64 SDslu, 224 SDs, 0 SdLazy, 194 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 54 LocationsWithAnnotation, 62 PreInvPairs, 76 NumberOfFragments, 404 HoareAnnotationTreeSize, 62 FomulaSimplifications, 41 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 54 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 8002 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...