/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/loops/for_infinite_loop_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:57:07,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:57:07,534 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:57:07,569 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 01:57:07,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:57:07,584 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:57:07,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:57:07,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:57:07,591 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:57:07,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:57:07,595 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:57:07,597 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:57:07,600 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:57:07,601 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:57:07,603 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:57:07,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:57:07,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:57:07,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:57:07,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:57:07,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:57:07,656 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 01:57:07,680 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:57:07,680 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:57:07,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:57:07,686 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:57:07,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:57:07,687 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:57:07,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:57:07,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:57:07,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:57:07,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:57:07,689 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:57:07,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:57:07,689 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:57:07,690 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:57:07,690 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:57:07,690 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:57:07,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:57:07,691 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:57:07,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:57:07,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:57:07,692 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:57:07,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:57:07,692 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:57:08,138 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:57:08,191 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:57:08,195 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:57:08,196 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:57:08,197 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:57:08,198 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_infinite_loop_1.c [2020-11-07 01:57:08,287 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea949bdf/039bc21993df45c89c7180895e31de27/FLAG87adfde4f [2020-11-07 01:57:08,880 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:57:08,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_infinite_loop_1.c [2020-11-07 01:57:08,888 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea949bdf/039bc21993df45c89c7180895e31de27/FLAG87adfde4f [2020-11-07 01:57:09,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ea949bdf/039bc21993df45c89c7180895e31de27 [2020-11-07 01:57:09,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:57:09,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:57:09,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:57:09,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:57:09,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:57:09,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:09" (1/1) ... [2020-11-07 01:57:09,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e965217 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:09, skipping insertion in model container [2020-11-07 01:57:09,291 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:09" (1/1) ... [2020-11-07 01:57:09,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:57:09,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:57:09,551 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:57:09,570 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:57:09,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:57:09,611 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:57:09,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:09 WrapperNode [2020-11-07 01:57:09,612 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:57:09,613 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:57:09,613 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:57:09,613 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:57:09,627 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:09" (1/1) ... [2020-11-07 01:57:09,627 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:09" (1/1) ... [2020-11-07 01:57:09,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:09" (1/1) ... [2020-11-07 01:57:09,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:09" (1/1) ... [2020-11-07 01:57:09,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:09" (1/1) ... [2020-11-07 01:57:09,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:09" (1/1) ... [2020-11-07 01:57:09,647 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:09" (1/1) ... [2020-11-07 01:57:09,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:57:09,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:57:09,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:57:09,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:57:09,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:09" (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 01:57:09,732 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:57:09,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:57:09,733 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:57:09,733 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:57:09,733 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:57:09,733 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:57:09,733 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:57:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:57:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:57:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:57:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:57:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:57:09,734 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:57:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:57:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:57:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:57:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:57:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:57:09,735 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:57:09,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:57:10,063 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:57:10,063 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-07 01:57:10,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:10 BoogieIcfgContainer [2020-11-07 01:57:10,066 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:57:10,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:57:10,071 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:57:10,076 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:57:10,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:57:09" (1/3) ... [2020-11-07 01:57:10,077 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d1a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:10, skipping insertion in model container [2020-11-07 01:57:10,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:09" (2/3) ... [2020-11-07 01:57:10,079 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a5d1a04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:10, skipping insertion in model container [2020-11-07 01:57:10,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:10" (3/3) ... [2020-11-07 01:57:10,081 INFO L111 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_1.c [2020-11-07 01:57:10,100 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:57:10,103 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:57:10,118 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:57:10,140 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:57:10,141 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:57:10,141 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:57:10,141 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:57:10,141 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:57:10,141 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:57:10,142 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:57:10,142 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:57:10,156 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-07 01:57:10,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-07 01:57:10,164 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:10,165 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] [2020-11-07 01:57:10,165 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:10,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:10,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1611626374, now seen corresponding path program 1 times [2020-11-07 01:57:10,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:10,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651899237] [2020-11-07 01:57:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:10,257 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:10,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:10,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:10,544 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 01:57:10,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651899237] [2020-11-07 01:57:10,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:10,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:57:10,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998756790] [2020-11-07 01:57:10,560 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:57:10,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:10,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:57:10,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:57:10,582 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 3 states. [2020-11-07 01:57:10,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:10,685 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2020-11-07 01:57:10,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:57:10,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-11-07 01:57:10,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:10,697 INFO L225 Difference]: With dead ends: 57 [2020-11-07 01:57:10,697 INFO L226 Difference]: Without dead ends: 32 [2020-11-07 01:57:10,701 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 01:57:10,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-07 01:57:10,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-07 01:57:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-07 01:57:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-11-07 01:57:10,758 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-11-07 01:57:10,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:10,759 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-11-07 01:57:10,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:57:10,760 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-11-07 01:57:10,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-07 01:57:10,761 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:10,761 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] [2020-11-07 01:57:10,762 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:57:10,762 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:10,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:10,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1409375275, now seen corresponding path program 1 times [2020-11-07 01:57:10,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:10,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1028130222] [2020-11-07 01:57:10,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:10,768 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:10,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:10,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:10,939 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 01:57:10,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1028130222] [2020-11-07 01:57:10,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:10,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 01:57:10,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802893722] [2020-11-07 01:57:10,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 01:57:10,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:10,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 01:57:10,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-07 01:57:10,943 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 6 states. [2020-11-07 01:57:11,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:11,146 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-11-07 01:57:11,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:57:11,147 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-07 01:57:11,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:11,148 INFO L225 Difference]: With dead ends: 32 [2020-11-07 01:57:11,148 INFO L226 Difference]: Without dead ends: 0 [2020-11-07 01:57:11,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-11-07 01:57:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-07 01:57:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-07 01:57:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-07 01:57:11,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-07 01:57:11,151 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-11-07 01:57:11,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:11,151 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-07 01:57:11,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 01:57:11,152 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-07 01:57:11,152 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-07 01:57:11,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:57:11,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-07 01:57:11,762 INFO L269 CegarLoopResult]: At program point reach_errorEXIT(line 3) the Hoare annotation is: true [2020-11-07 01:57:11,762 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-07 01:57:11,762 INFO L269 CegarLoopResult]: At program point reach_errorFINAL(line 3) the Hoare annotation is: true [2020-11-07 01:57:11,762 INFO L269 CegarLoopResult]: At program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) the Hoare annotation is: true [2020-11-07 01:57:11,763 INFO L269 CegarLoopResult]: At program point L3-2(line 3) the Hoare annotation is: true [2020-11-07 01:57:11,763 INFO L269 CegarLoopResult]: At program point L3-3(line 3) the Hoare annotation is: true [2020-11-07 01:57:11,763 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 01:57:11,763 INFO L269 CegarLoopResult]: At program point L3-4(line 3) the Hoare annotation is: true [2020-11-07 01:57:11,764 INFO L269 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-11-07 01:57:11,764 INFO L269 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2020-11-07 01:57:11,764 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 01:57:11,764 INFO L269 CegarLoopResult]: At program point L3(line 3) the Hoare annotation is: true [2020-11-07 01:57:11,764 INFO L269 CegarLoopResult]: At program point L3-1(line 3) the Hoare annotation is: true [2020-11-07 01:57:11,765 INFO L269 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-11-07 01:57:11,765 INFO L269 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-11-07 01:57:11,766 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-07 01:57:11,766 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-07 01:57:11,767 INFO L269 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-11-07 01:57:11,767 INFO L266 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2020-11-07 01:57:11,768 INFO L266 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-07 01:57:11,768 INFO L266 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-11-07 01:57:11,770 INFO L266 CegarLoopResult]: For program point L7-3(lines 6 8) no Hoare annotation was computed. [2020-11-07 01:57:11,771 INFO L266 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-11-07 01:57:11,771 INFO L262 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 01:57:11,771 INFO L269 CegarLoopResult]: At program point mainEXIT(lines 18 28) the Hoare annotation is: true [2020-11-07 01:57:11,771 INFO L262 CegarLoopResult]: At program point L25-1(lines 23 26) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 01:57:11,771 INFO L262 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 01:57:11,772 INFO L262 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 01:57:11,772 INFO L262 CegarLoopResult]: At program point L21-1(line 21) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 01:57:11,772 INFO L262 CegarLoopResult]: At program point L23-3(line 23) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 01:57:11,773 INFO L262 CegarLoopResult]: At program point L21-2(line 21) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 01:57:11,773 INFO L262 CegarLoopResult]: At program point L23-4(line 23) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 01:57:11,773 INFO L262 CegarLoopResult]: At program point L23-5(lines 23 26) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 01:57:11,773 INFO L262 CegarLoopResult]: At program point L23-6(lines 23 26) the Hoare annotation is: false [2020-11-07 01:57:11,773 INFO L269 CegarLoopResult]: At program point mainFINAL(lines 18 28) the Hoare annotation is: true [2020-11-07 01:57:11,773 INFO L269 CegarLoopResult]: At program point mainENTRY(lines 18 28) the Hoare annotation is: true [2020-11-07 01:57:11,774 INFO L262 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 01:57:11,774 INFO L269 CegarLoopResult]: At program point L22-1(line 22) the Hoare annotation is: true [2020-11-07 01:57:11,774 INFO L269 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: true [2020-11-07 01:57:11,774 INFO L262 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: (= main_~x~0 0) [2020-11-07 01:57:11,774 INFO L269 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 9 14) the Hoare annotation is: true [2020-11-07 01:57:11,775 INFO L262 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 01:57:11,775 INFO L262 CegarLoopResult]: At program point L10(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 01:57:11,776 INFO L262 CegarLoopResult]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-11-07 01:57:11,776 INFO L262 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 01:57:11,776 INFO L262 CegarLoopResult]: At program point L10-2(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-11-07 01:57:11,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:57:11 BoogieIcfgContainer [2020-11-07 01:57:11,795 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:57:11,801 INFO L168 Benchmark]: Toolchain (without parser) took 2526.63 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 126.7 MB in the beginning and 130.8 MB in the end (delta: -4.1 MB). Peak memory consumption was 69.7 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:11,803 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:57:11,806 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.31 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:11,807 INFO L168 Benchmark]: Boogie Preprocessor took 37.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:11,809 INFO L168 Benchmark]: RCFGBuilder took 414.87 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 101.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:11,810 INFO L168 Benchmark]: TraceAbstraction took 1724.96 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 100.5 MB in the beginning and 130.8 MB in the end (delta: -30.3 MB). Peak memory consumption was 43.5 MB. Max. memory is 8.0 GB. [2020-11-07 01:57:11,821 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory is still 125.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.31 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 116.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 37.00 ms. Allocated memory is still 151.0 MB. Free memory was 116.6 MB in the beginning and 115.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 414.87 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 101.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1724.96 ms. Allocated memory was 151.0 MB in the beginning and 196.1 MB in the end (delta: 45.1 MB). Free memory was 100.5 MB in the beginning and 130.8 MB in the end (delta: -30.3 MB). Peak memory consumption was 43.5 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: 23]: Loop Invariant Derived loop invariant: x == 0 - ProcedureContractResult [Line: 3]: Procedure Contract for reach_error Derived contract for procedure reach_error: 1 - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 46 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 62 SDtfs, 43 SDslu, 45 SDs, 0 SdLazy, 49 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=41occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 41 LocationsWithAnnotation, 57 PreInvPairs, 68 NumberOfFragments, 118 HoareAnnotationTreeSize, 57 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 41 FomulaSimplificationsInter, 634 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...