/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:45:30,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:45:30,544 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:45:30,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:45:30,587 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:45:30,590 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:45:30,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:45:30,602 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:45:30,605 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:45:30,611 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:45:30,613 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:45:30,615 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2020-11-06 22:45:30,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:45:30,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:45:30,678 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:45:30,701 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:45:30,749 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:45:30,749 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:45:30,751 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:45:30,751 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:45:30,751 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:45:30,751 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:45:30,752 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:45:30,752 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:45:30,752 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:45:30,752 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:45:30,752 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:45:30,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:45:30,753 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:45:30,753 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:45:30,753 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:45:30,753 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:45:30,754 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:45:30,754 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:45:30,754 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:45:30,754 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:45:30,754 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:45:30,755 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:45:30,755 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:45:30,755 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:45:30,755 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:45:30,755 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:45:30,756 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:45:30,756 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:45:30,756 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:45:30,756 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:45:31,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:45:31,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:45:31,167 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:45:31,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:45:31,169 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:45:31,170 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c [2020-11-06 22:45:31,260 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73df6fc04/eb7d8d4a13994de59082433577245127/FLAG20909a429 [2020-11-06 22:45:31,929 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:45:31,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c [2020-11-06 22:45:31,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73df6fc04/eb7d8d4a13994de59082433577245127/FLAG20909a429 [2020-11-06 22:45:32,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73df6fc04/eb7d8d4a13994de59082433577245127 [2020-11-06 22:45:32,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:45:32,293 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:45:32,297 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:32,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:45:32,302 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:45:32,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:32,308 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58333880 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32, skipping insertion in model container [2020-11-06 22:45:32,309 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:32,318 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:45:32,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:45:32,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:32,522 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:45:32,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:45:32,559 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:45:32,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32 WrapperNode [2020-11-06 22:45:32,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:45:32,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:45:32,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:45:32,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:45:32,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:32,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:32,584 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:32,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:32,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:32,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:32,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (1/1) ... [2020-11-06 22:45:32,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:45:32,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:45:32,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:45:32,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:45:32,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (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 [2020-11-06 22:45:32,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:45:32,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:45:32,739 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:45:32,740 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-06 22:45:32,740 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:45:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:45:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:45:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:45:32,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:45:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-06 22:45:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-06 22:45:32,741 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-11-06 22:45:32,742 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:45:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:45:32,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:45:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:45:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:45:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:45:32,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:45:33,187 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:45:33,187 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-11-06 22:45:33,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:33 BoogieIcfgContainer [2020-11-06 22:45:33,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:45:33,195 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:45:33,195 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:45:33,202 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:45:33,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:45:32" (1/3) ... [2020-11-06 22:45:33,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239c1a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:33, skipping insertion in model container [2020-11-06 22:45:33,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:45:32" (2/3) ... [2020-11-06 22:45:33,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@239c1a93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:45:33, skipping insertion in model container [2020-11-06 22:45:33,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:45:33" (3/3) ... [2020-11-06 22:45:33,206 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2020-11-06 22:45:33,226 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:45:33,231 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:45:33,246 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:45:33,288 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:45:33,288 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:45:33,288 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:45:33,289 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:45:33,289 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:45:33,289 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:45:33,289 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:45:33,289 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:45:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-11-06 22:45:33,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-06 22:45:33,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:33,330 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:33,331 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:33,342 INFO L82 PathProgramCache]: Analyzing trace with hash 1834290772, now seen corresponding path program 1 times [2020-11-06 22:45:33,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:33,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120497000] [2020-11-06 22:45:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:33,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:33,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:45:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:45:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:45:33,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120497000] [2020-11-06 22:45:33,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:45:33,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:45:33,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452974263] [2020-11-06 22:45:33,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:45:33,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:45:33,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:45:33,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:45:33,783 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-11-06 22:45:33,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:45:33,873 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-11-06 22:45:33,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:45:33,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-06 22:45:33,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:45:33,884 INFO L225 Difference]: With dead ends: 39 [2020-11-06 22:45:33,884 INFO L226 Difference]: Without dead ends: 16 [2020-11-06 22:45:33,888 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 [2020-11-06 22:45:33,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-06 22:45:33,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-06 22:45:33,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-06 22:45:33,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-06 22:45:33,930 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-11-06 22:45:33,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:45:33,931 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-06 22:45:33,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:45:33,931 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-06 22:45:33,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-06 22:45:33,932 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:45:33,932 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:45:33,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:45:33,933 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:45:33,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:45:33,934 INFO L82 PathProgramCache]: Analyzing trace with hash 1376224356, now seen corresponding path program 1 times [2020-11-06 22:45:33,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:45:33,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515587902] [2020-11-06 22:45:33,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:45:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:33,973 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:34,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:45:34,002 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:45:34,030 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:45:34,030 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:45:34,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:45:34,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:45:34 BoogieIcfgContainer [2020-11-06 22:45:34,061 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:45:34,067 INFO L168 Benchmark]: Toolchain (without parser) took 1774.42 ms. Allocated memory is still 151.0 MB. Free memory was 108.8 MB in the beginning and 90.1 MB in the end (delta: 18.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:34,068 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 125.6 MB in the end (delta: 214.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:45:34,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.89 ms. Allocated memory is still 151.0 MB. Free memory was 108.0 MB in the beginning and 98.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:34,071 INFO L168 Benchmark]: Boogie Preprocessor took 44.05 ms. Allocated memory is still 151.0 MB. Free memory was 98.8 MB in the beginning and 97.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:34,072 INFO L168 Benchmark]: RCFGBuilder took 583.52 ms. Allocated memory is still 151.0 MB. Free memory was 97.3 MB in the beginning and 120.6 MB in the end (delta: -23.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:34,073 INFO L168 Benchmark]: TraceAbstraction took 866.34 ms. Allocated memory is still 151.0 MB. Free memory was 120.2 MB in the beginning and 90.1 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:45:34,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 125.6 MB in the end (delta: 214.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 262.89 ms. Allocated memory is still 151.0 MB. Free memory was 108.0 MB in the beginning and 98.8 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.05 ms. Allocated memory is still 151.0 MB. Free memory was 98.8 MB in the beginning and 97.3 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 583.52 ms. Allocated memory is still 151.0 MB. Free memory was 97.3 MB in the beginning and 120.6 MB in the end (delta: -23.3 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 866.34 ms. Allocated memory is still 151.0 MB. Free memory was 120.2 MB in the beginning and 90.1 MB in the end (delta: 30.0 MB). Peak memory consumption was 30.4 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: [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L18] unsigned int d1=1, d2=1, d3=1; [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L21] COND FALSE !(x1>0 && x2>0 && x3>0) VAL [c1=4294967299, c2=4294967301, d1=1, d2=1, d3=1, x1=0, x2=0, x3=4294967297] [L30] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==0) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] CALL reach_error() [L3] __assert_fail("0", "trex03-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 15 SDslu, 3 SDs, 0 SdLazy, 4 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 451 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...