/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/for_infinite_loop_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:17:30,411 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:17:30,414 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:17:30,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:17:30,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:17:30,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:17:30,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:17:30,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:17:30,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:17:30,496 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:17:30,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:17:30,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:17:30,500 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:17:30,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:17:30,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:17:30,507 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:17:30,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:17:30,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:17:30,533 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:17:30,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:17:30,541 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:17:30,543 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:17:30,546 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:17:30,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:17:30,557 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-22 04:17:30,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-22 04:17:30,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-22 04:17:30,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-22 04:17:30,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-22 04:17:30,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-22 04:17:30,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:17:30,564 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:17:30,566 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:17:30,567 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:17:30,570 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:17:30,571 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:17:30,571 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:17:30,571 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:17:30,572 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:17:30,574 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:17:30,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:17:30,576 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:17:30,631 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:17:30,632 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:17:30,635 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:17:30,636 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:17:30,636 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:17:30,636 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:17:30,637 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:17:30,637 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:17:30,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:17:30,637 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:17:30,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:17:30,639 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:17:30,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:17:30,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:17:30,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:17:30,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:17:30,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:17:30,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:17:30,640 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:17:30,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:17:30,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:17:30,641 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:17:30,641 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:17:30,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:17:30,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:17:30,642 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:17:31,070 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:17:31,098 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:17:31,102 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:17:31,104 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:17:31,104 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:17:31,105 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops/for_infinite_loop_2.c [2020-12-22 04:17:31,195 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab47b98f/10f7674ce33d4518a7b8f2d210d8113a/FLAG90a1a0377 [2020-12-22 04:17:31,824 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:17:31,825 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops/for_infinite_loop_2.c [2020-12-22 04:17:31,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab47b98f/10f7674ce33d4518a7b8f2d210d8113a/FLAG90a1a0377 [2020-12-22 04:17:32,181 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fab47b98f/10f7674ce33d4518a7b8f2d210d8113a [2020-12-22 04:17:32,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:17:32,186 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:17:32,188 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:17:32,188 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:17:32,192 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:17:32,193 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:17:32" (1/1) ... [2020-12-22 04:17:32,194 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4175da8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32, skipping insertion in model container [2020-12-22 04:17:32,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:17:32" (1/1) ... [2020-12-22 04:17:32,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:17:32,217 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:17:32,362 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/for_infinite_loop_2.c[418,431] [2020-12-22 04:17:32,374 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:17:32,384 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:17:32,397 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/for_infinite_loop_2.c[418,431] [2020-12-22 04:17:32,401 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:17:32,417 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:17:32,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32 WrapperNode [2020-12-22 04:17:32,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:17:32,419 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:17:32,419 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:17:32,419 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:17:32,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32" (1/1) ... [2020-12-22 04:17:32,435 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32" (1/1) ... [2020-12-22 04:17:32,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:17:32,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:17:32,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:17:32,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:17:32,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32" (1/1) ... [2020-12-22 04:17:32,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32" (1/1) ... [2020-12-22 04:17:32,465 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32" (1/1) ... [2020-12-22 04:17:32,466 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32" (1/1) ... [2020-12-22 04:17:32,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32" (1/1) ... [2020-12-22 04:17:32,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32" (1/1) ... [2020-12-22 04:17:32,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32" (1/1) ... [2020-12-22 04:17:32,476 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:17:32,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:17:32,477 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:17:32,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:17:32,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32" (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 [2020-12-22 04:17:32,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:17:32,583 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:17:32,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:17:32,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:17:32,817 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:17:32,817 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-22 04:17:32,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:17:32 BoogieIcfgContainer [2020-12-22 04:17:32,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:17:32,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:17:32,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:17:32,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:17:32,825 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:17:32" (1/3) ... [2020-12-22 04:17:32,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669b00f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:17:32, skipping insertion in model container [2020-12-22 04:17:32,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:17:32" (2/3) ... [2020-12-22 04:17:32,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669b00f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:17:32, skipping insertion in model container [2020-12-22 04:17:32,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:17:32" (3/3) ... [2020-12-22 04:17:32,829 INFO L111 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_2.c [2020-12-22 04:17:32,855 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:17:32,866 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 04:17:32,912 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 04:17:32,975 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:17:32,976 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:17:32,976 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:17:32,976 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:17:32,976 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:17:32,976 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:17:32,976 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:17:32,977 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:17:32,993 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2020-12-22 04:17:32,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-22 04:17:32,999 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:17:33,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-22 04:17:33,000 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:17:33,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:17:33,008 INFO L82 PathProgramCache]: Analyzing trace with hash 889574253, now seen corresponding path program 1 times [2020-12-22 04:17:33,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:17:33,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628431003] [2020-12-22 04:17:33,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:17:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:17:33,275 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 04:17:33,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628431003] [2020-12-22 04:17:33,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:17:33,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:17:33,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198815447] [2020-12-22 04:17:33,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:17:33,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:17:33,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:17:33,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:17:33,304 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2020-12-22 04:17:33,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:17:33,357 INFO L93 Difference]: Finished difference Result 22 states and 30 transitions. [2020-12-22 04:17:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:17:33,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-22 04:17:33,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:17:33,368 INFO L225 Difference]: With dead ends: 22 [2020-12-22 04:17:33,369 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 04:17:33,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:17:33,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 04:17:33,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 04:17:33,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 04:17:33,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 04:17:33,402 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 6 [2020-12-22 04:17:33,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:17:33,403 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 04:17:33,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:17:33,403 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 04:17:33,403 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 04:17:33,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:17:33,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 04:17:33,442 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 04:17:33,443 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-12-22 04:17:33,443 INFO L185 CegarLoopUtils]: At program point L23-2(lines 23 26) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2020-12-22 04:17:33,443 INFO L189 CegarLoopUtils]: For program point L23-3(lines 23 26) no Hoare annotation was computed. [2020-12-22 04:17:33,444 INFO L189 CegarLoopUtils]: For program point L11(line 11) no Hoare annotation was computed. [2020-12-22 04:17:33,444 INFO L189 CegarLoopUtils]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-12-22 04:17:33,444 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 04:17:33,444 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 04:17:33,444 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 04:17:33,444 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-12-22 04:17:33,445 INFO L189 CegarLoopUtils]: For program point L22(line 22) no Hoare annotation was computed. [2020-12-22 04:17:33,445 INFO L189 CegarLoopUtils]: For program point L10(lines 10 12) no Hoare annotation was computed. [2020-12-22 04:17:33,445 INFO L185 CegarLoopUtils]: At program point L10-2(lines 1 29) the Hoare annotation is: (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= ULTIMATE.start_main_~x~0 0)) [2020-12-22 04:17:33,445 INFO L189 CegarLoopUtils]: For program point L10-3(lines 10 12) no Hoare annotation was computed. [2020-12-22 04:17:33,445 INFO L185 CegarLoopUtils]: At program point L10-5(lines 1 29) the Hoare annotation is: (= ULTIMATE.start_main_~x~0 0) [2020-12-22 04:17:33,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 04:17:33 BoogieIcfgContainer [2020-12-22 04:17:33,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 04:17:33,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 04:17:33,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 04:17:33,465 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 04:17:33,467 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:17:32" (3/4) ... [2020-12-22 04:17:33,474 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 04:17:33,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-22 04:17:33,488 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 04:17:33,489 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:17:33,489 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 04:17:33,557 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/loops/for_infinite_loop_2.c-witness.graphml [2020-12-22 04:17:33,558 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 04:17:33,561 INFO L168 Benchmark]: Toolchain (without parser) took 1373.06 ms. Allocated memory is still 151.0 MB. Free memory was 126.4 MB in the beginning and 110.4 MB in the end (delta: 15.9 MB). Peak memory consumption was 17.3 MB. Max. memory is 8.0 GB. [2020-12-22 04:17:33,561 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory was 124.0 MB in the beginning and 124.0 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:17:33,563 INFO L168 Benchmark]: CACSL2BoogieTranslator took 229.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 04:17:33,564 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.29 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:17:33,565 INFO L168 Benchmark]: Boogie Preprocessor took 22.78 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 114.3 MB in the end (delta: 995.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 04:17:33,572 INFO L168 Benchmark]: RCFGBuilder took 341.98 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 102.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-12-22 04:17:33,573 INFO L168 Benchmark]: TraceAbstraction took 642.62 ms. Allocated memory is still 151.0 MB. Free memory was 101.7 MB in the beginning and 112.6 MB in the end (delta: -10.9 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 04:17:33,574 INFO L168 Benchmark]: Witness Printer took 93.35 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 110.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 04:17:33,586 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 151.0 MB. Free memory was 124.0 MB in the beginning and 124.0 MB in the end (delta: 80.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 229.99 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 116.8 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 34.29 ms. Allocated memory is still 151.0 MB. Free memory was 116.8 MB in the beginning and 115.4 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.78 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 114.3 MB in the end (delta: 995.2 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 341.98 ms. Allocated memory is still 151.0 MB. Free memory was 114.3 MB in the beginning and 102.1 MB in the end (delta: 12.1 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 642.62 ms. Allocated memory is still 151.0 MB. Free memory was 101.7 MB in the beginning and 112.6 MB in the end (delta: -10.9 MB). There was no memory consumed. Max. memory is 8.0 GB. * Witness Printer took 93.35 ms. Allocated memory is still 151.0 MB. Free memory was 112.6 MB in the beginning and 110.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: !(0 == cond) && x == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7 SDtfs, 8 SDslu, 7 SDs, 0 SdLazy, 3 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred 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: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 7 NumberOfFragments, 14 HoareAnnotationTreeSize, 3 FomulaSimplifications, 9 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 60 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 correct! Received shutdown request...