/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/ldv-regression/test_while_int.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:35:40,475 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:35:40,479 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:35:40,531 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-10-23 20:35:40,618 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:35:40,619 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:35:40,620 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:35:40,621 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:35:40,645 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:35:40,646 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:35:40,649 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:35:40,650 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:35:40,650 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:35:40,650 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:35:40,650 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:35:40,651 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:35:40,651 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:35:40,651 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:35:40,652 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:35:40,652 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:35:40,652 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:35:40,653 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:35:40,653 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:35:40,653 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:35:40,653 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:35:40,654 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:35:40,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:35:40,654 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:35:40,654 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:35:40,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:35:40,654 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:35:41,065 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:35:41,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:35:41,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:35:41,110 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:35:41,110 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:35:41,111 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-10-23 20:35:41,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6bb180e/e22f960f5c8b4fd6ac20197f6cf49e85/FLAG94617b452 [2020-10-23 20:35:41,733 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:35:41,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test_while_int.c_1.i [2020-10-23 20:35:41,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6bb180e/e22f960f5c8b4fd6ac20197f6cf49e85/FLAG94617b452 [2020-10-23 20:35:42,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea6bb180e/e22f960f5c8b4fd6ac20197f6cf49e85 [2020-10-23 20:35:42,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:35:42,136 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:35:42,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:35:42,143 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:35:42,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:35:42,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:42" (1/1) ... [2020-10-23 20:35:42,151 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66e822ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:42, skipping insertion in model container [2020-10-23 20:35:42,151 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:35:42" (1/1) ... [2020-10-23 20:35:42,159 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:35:42,176 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:35:42,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:35:42,432 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:35:42,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:35:42,468 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:35:42,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:42 WrapperNode [2020-10-23 20:35:42,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:35:42,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:35:42,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:35:42,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:35:42,483 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:42" (1/1) ... [2020-10-23 20:35:42,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:42" (1/1) ... [2020-10-23 20:35:42,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:42" (1/1) ... [2020-10-23 20:35:42,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:42" (1/1) ... [2020-10-23 20:35:42,498 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:42" (1/1) ... [2020-10-23 20:35:42,508 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:42" (1/1) ... [2020-10-23 20:35:42,509 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:42" (1/1) ... [2020-10-23 20:35:42,517 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:35:42,519 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:35:42,519 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:35:42,520 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:35:42,522 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:42" (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 [2020-10-23 20:35:42,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:35:42,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:35:42,610 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:35:42,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-23 20:35:42,611 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:35:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:35:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:35:42,611 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:35:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:35:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-23 20:35:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:35:42,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:35:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:35:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:35:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:35:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:35:42,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:35:43,082 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:35:43,083 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-23 20:35:43,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:43 BoogieIcfgContainer [2020-10-23 20:35:43,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:35:43,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:35:43,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:35:43,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:35:43,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:35:42" (1/3) ... [2020-10-23 20:35:43,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40698834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:43, skipping insertion in model container [2020-10-23 20:35:43,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:35:42" (2/3) ... [2020-10-23 20:35:43,095 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40698834 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:35:43, skipping insertion in model container [2020-10-23 20:35:43,095 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:35:43" (3/3) ... [2020-10-23 20:35:43,096 INFO L111 eAbstractionObserver]: Analyzing ICFG test_while_int.c_1.i [2020-10-23 20:35:43,109 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:35:43,115 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:35:43,128 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:35:43,165 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:35:43,165 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:35:43,165 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:35:43,166 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:35:43,166 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:35:43,166 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:35:43,166 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:35:43,166 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:35:43,188 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-23 20:35:43,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-23 20:35:43,197 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:43,198 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] [2020-10-23 20:35:43,198 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:43,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:43,210 INFO L82 PathProgramCache]: Analyzing trace with hash -289981893, now seen corresponding path program 1 times [2020-10-23 20:35:43,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:43,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615048478] [2020-10-23 20:35:43,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:43,327 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:35:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:43,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:35:43,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:35:43,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:35:43,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615048478] [2020-10-23 20:35:43,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:35:43,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:35:43,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086486051] [2020-10-23 20:35:43,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:35:43,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:35:43,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:35:43,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:35:43,615 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 6 states. [2020-10-23 20:35:43,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:35:43,880 INFO L93 Difference]: Finished difference Result 54 states and 65 transitions. [2020-10-23 20:35:43,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-23 20:35:43,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-10-23 20:35:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:35:43,890 INFO L225 Difference]: With dead ends: 54 [2020-10-23 20:35:43,890 INFO L226 Difference]: Without dead ends: 30 [2020-10-23 20:35:43,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:35:43,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-23 20:35:43,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2020-10-23 20:35:43,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-23 20:35:43,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-10-23 20:35:43,940 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-10-23 20:35:43,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:35:43,941 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-10-23 20:35:43,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:35:43,941 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-10-23 20:35:43,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-23 20:35:43,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:35:43,943 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:35:43,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:35:43,943 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:35:43,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:35:43,944 INFO L82 PathProgramCache]: Analyzing trace with hash 222212590, now seen corresponding path program 1 times [2020-10-23 20:35:43,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:35:43,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2072090847] [2020-10-23 20:35:43,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:35:46,229 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:35:46,312 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:35:48,499 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:35:48,577 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:35:50,707 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-10-23 20:35:50,725 INFO L309 leratedInterpolation]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2020-10-23 20:35:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:35:50,798 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:35:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:35:50,853 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:35:50,888 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:35:50,888 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:35:50,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:35:50,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:35:50 BoogieIcfgContainer [2020-10-23 20:35:50,905 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:35:50,908 INFO L168 Benchmark]: Toolchain (without parser) took 8782.71 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 133.1 MB in the beginning and 133.3 MB in the end (delta: -201.0 kB). Peak memory consumption was 32.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:50,911 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 156.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:35:50,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 326.57 ms. Allocated memory is still 156.2 MB. Free memory was 132.6 MB in the beginning and 123.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:50,916 INFO L168 Benchmark]: Boogie Preprocessor took 47.12 ms. Allocated memory is still 156.2 MB. Free memory was 123.6 MB in the beginning and 122.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:50,916 INFO L168 Benchmark]: RCFGBuilder took 566.34 ms. Allocated memory is still 156.2 MB. Free memory was 122.1 MB in the beginning and 109.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:50,918 INFO L168 Benchmark]: TraceAbstraction took 7816.63 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 109.3 MB in the beginning and 133.3 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:35:50,930 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 156.2 MB. Free memory is still 129.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 326.57 ms. Allocated memory is still 156.2 MB. Free memory was 132.6 MB in the beginning and 123.6 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.12 ms. Allocated memory is still 156.2 MB. Free memory was 123.6 MB in the beginning and 122.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 566.34 ms. Allocated memory is still 156.2 MB. Free memory was 122.1 MB in the beginning and 109.7 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 7816.63 ms. Allocated memory was 156.2 MB in the beginning and 187.7 MB in the end (delta: 31.5 MB). Free memory was 109.3 MB in the beginning and 133.3 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int i=0; [L15] COND TRUE i<5 [L16] i++ [L18] (i!=3) ? (0) : __blast_assert () [L15] COND TRUE i<5 [L16] i++ [L18] (i!=3) ? (0) : __blast_assert () [L18] CALL __blast_assert () [L8] CALL reach_error() [L3] __assert_fail("0", "test_while_int.c_1.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.7s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 24 SDslu, 36 SDs, 0 SdLazy, 38 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 1 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, 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 incorrect! Received shutdown request...