/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/loops/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:21:37,670 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:21:37,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:21:37,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:21:37,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:21:37,721 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:21:37,723 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:21:37,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:21:37,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:21:37,729 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:21:37,730 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:21:37,731 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:21:37,732 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:21:37,733 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:21:37,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:21:37,736 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:21:37,737 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:21:37,739 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:21:37,741 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:21:37,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:21:37,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:21:37,747 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:21:37,749 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:21:37,750 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:21:37,753 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:21:37,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:21:37,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:21:37,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:21:37,799 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:21:37,860 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:21:37,861 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:21:37,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:21:37,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:21:37,866 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:21:37,866 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:21:37,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:21:37,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:21:37,867 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:21:37,867 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:21:37,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:21:37,869 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:21:37,869 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:21:37,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:21:37,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:21:37,870 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:21:37,870 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:21:37,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:21:37,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:21:37,871 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:21:37,871 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:21:37,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:21:37,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:21:37,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:21:37,872 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:21:37,872 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:21:38,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:21:38,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:21:38,401 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:21:38,402 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:21:38,403 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:21:38,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/trex03-1.c [2020-12-22 04:21:38,506 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28153630/270fe4bc8be94caaac302f39ae9f24c6/FLAG2a3bf1523 [2020-12-22 04:21:39,219 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:21:39,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/trex03-1.c [2020-12-22 04:21:39,227 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28153630/270fe4bc8be94caaac302f39ae9f24c6/FLAG2a3bf1523 [2020-12-22 04:21:39,591 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c28153630/270fe4bc8be94caaac302f39ae9f24c6 [2020-12-22 04:21:39,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:21:39,596 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:21:39,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:21:39,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:21:39,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:21:39,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:21:39" (1/1) ... [2020-12-22 04:21:39,604 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d3e4a57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39, skipping insertion in model container [2020-12-22 04:21:39,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:21:39" (1/1) ... [2020-12-22 04:21:39,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:21:39,632 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:21:39,786 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/trex03-1.c[320,333] [2020-12-22 04:21:39,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:21:39,814 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:21:39,829 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/trex03-1.c[320,333] [2020-12-22 04:21:39,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:21:39,852 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:21:39,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39 WrapperNode [2020-12-22 04:21:39,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:21:39,854 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:21:39,854 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:21:39,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:21:39,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39" (1/1) ... [2020-12-22 04:21:39,870 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39" (1/1) ... [2020-12-22 04:21:39,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:21:39,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:21:39,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:21:39,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:21:39,900 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39" (1/1) ... [2020-12-22 04:21:39,900 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39" (1/1) ... [2020-12-22 04:21:39,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39" (1/1) ... [2020-12-22 04:21:39,902 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39" (1/1) ... [2020-12-22 04:21:39,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39" (1/1) ... [2020-12-22 04:21:39,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39" (1/1) ... [2020-12-22 04:21:39,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39" (1/1) ... [2020-12-22 04:21:39,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:21:39,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:21:39,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:21:39,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:21:39,927 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39" (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 [2020-12-22 04:21:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:21:40,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:21:40,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:21:40,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:21:40,318 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:21:40,318 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2020-12-22 04:21:40,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:40 BoogieIcfgContainer [2020-12-22 04:21:40,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:21:40,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:21:40,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:21:40,332 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:21:40,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:21:39" (1/3) ... [2020-12-22 04:21:40,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a01cb0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:21:40, skipping insertion in model container [2020-12-22 04:21:40,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:21:39" (2/3) ... [2020-12-22 04:21:40,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a01cb0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:21:40, skipping insertion in model container [2020-12-22 04:21:40,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:40" (3/3) ... [2020-12-22 04:21:40,344 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2020-12-22 04:21:40,370 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:21:40,384 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-22 04:21:40,461 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-22 04:21:40,539 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:21:40,544 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:21:40,545 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:21:40,545 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:21:40,545 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:21:40,545 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:21:40,545 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:21:40,546 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:21:40,568 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-12-22 04:21:40,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:21:40,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:21:40,576 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:21:40,577 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:21:40,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:21:40,584 INFO L82 PathProgramCache]: Analyzing trace with hash 890122407, now seen corresponding path program 1 times [2020-12-22 04:21:40,595 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:21:40,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853935772] [2020-12-22 04:21:40,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:21:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:21:40,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:21:40,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853935772] [2020-12-22 04:21:40,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:21:40,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:21:40,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387926279] [2020-12-22 04:21:40,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:21:40,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:21:40,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:21:40,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:21:40,807 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 2 states. [2020-12-22 04:21:40,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:21:40,824 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2020-12-22 04:21:40,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:21:40,826 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-12-22 04:21:40,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:21:40,835 INFO L225 Difference]: With dead ends: 22 [2020-12-22 04:21:40,836 INFO L226 Difference]: Without dead ends: 10 [2020-12-22 04:21:40,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:21:40,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-12-22 04:21:40,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-12-22 04:21:40,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-12-22 04:21:40,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 12 transitions. [2020-12-22 04:21:40,878 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 12 transitions. Word has length 6 [2020-12-22 04:21:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:21:40,879 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 12 transitions. [2020-12-22 04:21:40,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:21:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 12 transitions. [2020-12-22 04:21:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:21:40,880 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:21:40,880 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:21:40,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:21:40,881 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:21:40,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:21:40,882 INFO L82 PathProgramCache]: Analyzing trace with hash 889645751, now seen corresponding path program 1 times [2020-12-22 04:21:40,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:21:40,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383992573] [2020-12-22 04:21:40,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:21:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:21:40,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:21:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-22 04:21:40,954 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-22 04:21:40,982 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-22 04:21:40,982 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 04:21:40,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:21:41,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:21:41 BoogieIcfgContainer [2020-12-22 04:21:41,013 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:21:41,014 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:21:41,014 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:21:41,014 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:21:41,015 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:21:40" (3/4) ... [2020-12-22 04:21:41,018 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-22 04:21:41,064 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops/trex03-1.c-witness.graphml [2020-12-22 04:21:41,064 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:21:41,067 INFO L168 Benchmark]: Toolchain (without parser) took 1469.75 ms. Allocated memory is still 170.9 MB. Free memory was 146.2 MB in the beginning and 133.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 12.3 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:41,067 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 170.9 MB. Free memory is still 144.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:21:41,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.45 ms. Allocated memory is still 170.9 MB. Free memory was 146.0 MB in the beginning and 136.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:41,069 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.84 ms. Allocated memory is still 170.9 MB. Free memory was 136.4 MB in the beginning and 135.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:41,070 INFO L168 Benchmark]: Boogie Preprocessor took 33.00 ms. Allocated memory is still 170.9 MB. Free memory was 135.0 MB in the beginning and 133.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:41,071 INFO L168 Benchmark]: RCFGBuilder took 397.36 ms. Allocated memory is still 170.9 MB. Free memory was 133.9 MB in the beginning and 121.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:41,072 INFO L168 Benchmark]: TraceAbstraction took 689.76 ms. Allocated memory is still 170.9 MB. Free memory was 120.9 MB in the beginning and 134.7 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:21:41,073 INFO L168 Benchmark]: Witness Printer took 50.25 ms. Allocated memory is still 170.9 MB. Free memory was 134.7 MB in the beginning and 133.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:21:41,077 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 170.9 MB. Free memory is still 144.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 255.45 ms. Allocated memory is still 170.9 MB. Free memory was 146.0 MB in the beginning and 136.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.84 ms. Allocated memory is still 170.9 MB. Free memory was 136.4 MB in the beginning and 135.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.00 ms. Allocated memory is still 170.9 MB. Free memory was 135.0 MB in the beginning and 133.9 MB in the end (delta: 1.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 397.36 ms. Allocated memory is still 170.9 MB. Free memory was 133.9 MB in the beginning and 121.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 689.76 ms. Allocated memory is still 170.9 MB. Free memory was 120.9 MB in the beginning and 134.7 MB in the end (delta: -13.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 50.25 ms. Allocated memory is still 170.9 MB. Free memory was 134.7 MB in the beginning and 133.1 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_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) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 16 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14occurred 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, 0.0s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 25 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...