/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invariants/odd.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 02:14:22,237 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 02:14:22,245 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 02:14:22,302 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 02:14:22,303 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 02:14:22,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 02:14:22,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 02:14:22,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 02:14:22,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 02:14:22,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 02:14:22,334 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 02:14:22,335 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 02:14:22,336 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 02:14:22,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 02:14:22,342 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 02:14:22,344 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 02:14:22,346 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 02:14:22,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 02:14:22,359 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 02:14:22,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 02:14:22,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 02:14:22,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 02:14:22,374 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 02:14:22,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 02:14:22,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 02:14:22,418 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 02:14:22,419 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 02:14:22,420 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 02:14:22,421 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 02:14:22,449 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 02:14:22,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 02:14:22,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 02:14:22,456 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 02:14:22,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 02:14:22,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 02:14:22,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 02:14:22,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 02:14:22,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 02:14:22,458 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 02:14:22,459 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 02:14:22,459 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 02:14:22,460 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 02:14:22,460 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 02:14:22,461 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 02:14:22,461 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 02:14:22,461 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 02:14:22,461 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 02:14:22,461 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:14:22,462 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 02:14:22,462 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 02:14:22,462 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 02:14:22,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 02:14:22,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 02:14:22,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 02:14:23,002 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 02:14:23,004 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 02:14:23,005 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 02:14:23,006 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/odd.c [2020-11-07 02:14:23,102 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3d5a09e/81823e61cf6f4da89ccf867c806a503e/FLAGc673d953b [2020-11-07 02:14:23,804 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 02:14:23,804 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c [2020-11-07 02:14:23,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3d5a09e/81823e61cf6f4da89ccf867c806a503e/FLAGc673d953b [2020-11-07 02:14:24,146 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe3d5a09e/81823e61cf6f4da89ccf867c806a503e [2020-11-07 02:14:24,149 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 02:14:24,156 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 02:14:24,158 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 02:14:24,158 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 02:14:24,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 02:14:24,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:14:24" (1/1) ... [2020-11-07 02:14:24,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33014f0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24, skipping insertion in model container [2020-11-07 02:14:24,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:14:24" (1/1) ... [2020-11-07 02:14:24,179 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 02:14:24,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 02:14:24,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:14:24,392 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 02:14:24,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 02:14:24,431 INFO L208 MainTranslator]: Completed translation [2020-11-07 02:14:24,431 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24 WrapperNode [2020-11-07 02:14:24,432 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 02:14:24,433 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 02:14:24,433 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 02:14:24,433 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 02:14:24,450 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2020-11-07 02:14:24,450 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2020-11-07 02:14:24,460 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2020-11-07 02:14:24,460 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2020-11-07 02:14:24,467 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2020-11-07 02:14:24,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2020-11-07 02:14:24,474 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... [2020-11-07 02:14:24,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 02:14:24,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 02:14:24,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 02:14:24,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 02:14:24,480 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 02:14:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 02:14:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 02:14:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 02:14:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 02:14:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 02:14:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 02:14:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 02:14:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 02:14:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 02:14:24,584 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 02:14:24,585 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 02:14:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 02:14:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 02:14:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 02:14:24,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 02:14:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 02:14:24,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 02:14:24,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 02:14:25,191 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 02:14:25,191 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 02:14:25,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:25 BoogieIcfgContainer [2020-11-07 02:14:25,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 02:14:25,201 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 02:14:25,201 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 02:14:25,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 02:14:25,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:14:24" (1/3) ... [2020-11-07 02:14:25,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2665de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:25, skipping insertion in model container [2020-11-07 02:14:25,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:14:24" (2/3) ... [2020-11-07 02:14:25,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f2665de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:14:25, skipping insertion in model container [2020-11-07 02:14:25,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:14:25" (3/3) ... [2020-11-07 02:14:25,234 INFO L111 eAbstractionObserver]: Analyzing ICFG odd.c [2020-11-07 02:14:25,253 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 02:14:25,257 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 02:14:25,274 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 02:14:25,315 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 02:14:25,316 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 02:14:25,316 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 02:14:25,316 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 02:14:25,316 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 02:14:25,316 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 02:14:25,316 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 02:14:25,317 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 02:14:25,339 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-07 02:14:25,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-07 02:14:25,355 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:14:25,356 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] [2020-11-07 02:14:25,357 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:14:25,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:14:25,363 INFO L82 PathProgramCache]: Analyzing trace with hash -2080136508, now seen corresponding path program 1 times [2020-11-07 02:14:25,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:14:25,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195676091] [2020-11-07 02:14:25,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:14:25,454 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:14:25,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:14:25,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:14:25,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:14:25,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:14:25,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195676091] [2020-11-07 02:14:25,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:14:25,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 02:14:25,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25432908] [2020-11-07 02:14:25,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 02:14:25,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:14:25,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 02:14:25,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:14:25,718 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-11-07 02:14:25,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:14:25,860 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-11-07 02:14:25,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 02:14:25,863 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-11-07 02:14:25,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:14:25,873 INFO L225 Difference]: With dead ends: 53 [2020-11-07 02:14:25,874 INFO L226 Difference]: Without dead ends: 30 [2020-11-07 02:14:25,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 02:14:25,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-07 02:14:25,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-07 02:14:25,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-07 02:14:25,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-11-07 02:14:25,934 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 25 [2020-11-07 02:14:25,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:14:25,935 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-11-07 02:14:25,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 02:14:25,936 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-11-07 02:14:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-07 02:14:25,937 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:14:25,937 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] [2020-11-07 02:14:25,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 02:14:25,938 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:14:25,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:14:25,939 INFO L82 PathProgramCache]: Analyzing trace with hash -655890547, now seen corresponding path program 1 times [2020-11-07 02:14:25,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:14:25,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [459110403] [2020-11-07 02:14:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:14:25,944 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 02:14:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:14:26,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:14:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:14:26,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:14:26,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [459110403] [2020-11-07 02:14:26,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:14:26,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 02:14:26,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727864630] [2020-11-07 02:14:26,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 02:14:26,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:14:26,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 02:14:26,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 02:14:26,152 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 6 states. [2020-11-07 02:14:26,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:14:26,467 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-11-07 02:14:26,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 02:14:26,468 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-07 02:14:26,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:14:26,470 INFO L225 Difference]: With dead ends: 41 [2020-11-07 02:14:26,470 INFO L226 Difference]: Without dead ends: 34 [2020-11-07 02:14:26,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 02:14:26,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-11-07 02:14:26,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-11-07 02:14:26,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-07 02:14:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-11-07 02:14:26,485 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 27 [2020-11-07 02:14:26,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:14:26,485 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-11-07 02:14:26,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 02:14:26,485 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-11-07 02:14:26,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-07 02:14:26,487 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 02:14:26,487 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-07 02:14:26,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 02:14:26,488 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 02:14:26,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 02:14:26,489 INFO L82 PathProgramCache]: Analyzing trace with hash 218555764, now seen corresponding path program 1 times [2020-11-07 02:14:26,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 02:14:26,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817244251] [2020-11-07 02:14:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 02:14:27,600 INFO L316 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-11-07 02:14:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:14:28,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 02:14:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 02:14:28,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 02:14:28,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817244251] [2020-11-07 02:14:28,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 02:14:28,168 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-07 02:14:28,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894364554] [2020-11-07 02:14:28,169 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-07 02:14:28,169 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 02:14:28,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-07 02:14:28,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-11-07 02:14:28,173 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2020-11-07 02:14:28,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 02:14:28,586 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-11-07 02:14:28,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-07 02:14:28,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-11-07 02:14:28,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 02:14:28,587 INFO L225 Difference]: With dead ends: 32 [2020-11-07 02:14:28,588 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 02:14:28,589 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-11-07 02:14:28,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 02:14:28,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 02:14:28,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 02:14:28,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 02:14:28,591 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-11-07 02:14:28,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 02:14:28,591 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 02:14:28,591 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-07 02:14:28,591 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 02:14:28,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 02:14:28,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 02:14:28,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 02:14:29,182 WARN L194 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 23 [2020-11-07 02:14:29,205 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,206 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,206 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,206 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,206 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,206 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,206 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:14:29,207 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,207 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 02:14:29,207 INFO L269 CegarLoopResult]: At program point L3-5(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,207 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,207 INFO L269 CegarLoopResult]: At program point L3-6(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,207 INFO L269 CegarLoopResult]: At program point L3-7(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,208 INFO L269 CegarLoopResult]: At program point L3-8(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,208 INFO L269 CegarLoopResult]: At program point L3-9(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,208 INFO L269 CegarLoopResult]: At program point L3-10(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,208 INFO L262 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|)) [2020-11-07 02:14:29,208 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,208 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 02:14:29,209 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:14:29,209 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 02:14:29,209 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 02:14:29,209 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 02:14:29,209 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 02:14:29,209 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2020-11-07 02:14:29,209 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 11 18) the Hoare annotation is: true [2020-11-07 02:14:29,210 INFO L269 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-11-07 02:14:29,210 INFO L262 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2020-11-07 02:14:29,210 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 11 18) the Hoare annotation is: true [2020-11-07 02:14:29,210 INFO L262 CegarLoopResult]: At program point L13-1(lines 13 15) the Hoare annotation is: (and (<= 0 (+ |main_#t~nondet7| 2147483648)) (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) (<= |main_#t~nondet7| 2147483647)) [2020-11-07 02:14:29,210 INFO L262 CegarLoopResult]: At program point L13-2(line 13) the Hoare annotation is: (or (and (<= 0 (+ |main_#t~nondet7| 2147483648)) (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) (<= |main_#t~nondet7| 2147483647)) (= main_~x~0 1)) [2020-11-07 02:14:29,211 INFO L262 CegarLoopResult]: At program point L13-4(line 13) the Hoare annotation is: (and (<= 0 (+ |main_#t~nondet7| 2147483648)) (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) (not (= |main_#t~nondet7| 0)) (<= |main_#t~nondet7| 2147483647)) [2020-11-07 02:14:29,211 INFO L262 CegarLoopResult]: At program point L13-5(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2020-11-07 02:14:29,211 INFO L262 CegarLoopResult]: At program point L13-6(lines 13 15) the Hoare annotation is: (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0) [2020-11-07 02:14:29,211 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-11-07 02:14:29,211 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2020-11-07 02:14:29,212 INFO L262 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (and (not (<= 1 |__VERIFIER_assert_#in~cond|)) (or (not (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0)) (not (<= (+ |__VERIFIER_assert_#in~cond| 1) 0)))) [2020-11-07 02:14:29,212 INFO L262 CegarLoopResult]: At program point L6(lines 6 8) the Hoare annotation is: (let ((.cse0 (<= 1 __VERIFIER_assert_~cond))) (and (or .cse0 (not (<= 1 |__VERIFIER_assert_#in~cond|))) (or (not (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0)) .cse0 (<= (+ __VERIFIER_assert_~cond 1) 0) (not (<= (+ |__VERIFIER_assert_#in~cond| 1) 0))))) [2020-11-07 02:14:29,212 INFO L262 CegarLoopResult]: At program point L7-1(line 7) the Hoare annotation is: (and (not (<= 1 |__VERIFIER_assert_#in~cond|)) (or (not (<= (+ (* 2 (div main_~x~0 2)) 1) main_~x~0)) (not (<= (+ |__VERIFIER_assert_#in~cond| 1) 0)))) [2020-11-07 02:14:29,212 INFO L269 CegarLoopResult]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2020-11-07 02:14:29,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:14:29 BoogieIcfgContainer [2020-11-07 02:14:29,232 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 02:14:29,234 INFO L168 Benchmark]: Toolchain (without parser) took 5081.68 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.8 MB in the beginning and 152.7 MB in the end (delta: -24.9 MB). Peak memory consumption was 86.5 MB. Max. memory is 8.0 GB. [2020-11-07 02:14:29,235 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 02:14:29,236 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.18 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:14:29,237 INFO L168 Benchmark]: Boogie Preprocessor took 43.69 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 02:14:29,238 INFO L168 Benchmark]: RCFGBuilder took 720.18 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 102.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2020-11-07 02:14:29,239 INFO L168 Benchmark]: TraceAbstraction took 4031.37 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.0 MB in the beginning and 152.7 MB in the end (delta: -50.7 MB). Peak memory consumption was 61.4 MB. Max. memory is 8.0 GB. [2020-11-07 02:14:29,243 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 126.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 274.18 ms. Allocated memory is still 151.0 MB. Free memory was 127.2 MB in the beginning and 117.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.69 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 720.18 ms. Allocated memory is still 151.0 MB. Free memory was 116.1 MB in the beginning and 102.4 MB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4031.37 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 102.0 MB in the beginning and 152.7 MB in the end (delta: -50.7 MB). Peak memory consumption was 61.4 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: 13]: Loop Invariant Derived loop invariant: 2 * (x / 2) + 1 <= x - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 87 SDtfs, 46 SDslu, 143 SDs, 0 SdLazy, 98 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 40 LocationsWithAnnotation, 60 PreInvPairs, 74 NumberOfFragments, 228 HoareAnnotationTreeSize, 60 FomulaSimplifications, 228 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 40 FomulaSimplificationsInter, 756 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...