/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/loop-lit/gcnr2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 15:29:10,507 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 15:29:10,509 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 15:29:10,522 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 15:29:10,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 15:29:10,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 15:29:10,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 15:29:10,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 15:29:10,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 15:29:10,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 15:29:10,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 15:29:10,531 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 15:29:10,531 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 15:29:10,532 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 15:29:10,533 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 15:29:10,534 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 15:29:10,535 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 15:29:10,536 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 15:29:10,537 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 15:29:10,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 15:29:10,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 15:29:10,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 15:29:10,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 15:29:10,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 15:29:10,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 15:29:10,551 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 15:29:10,552 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 15:29:10,553 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 15:29:10,554 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 [2020-07-10 15:29:10,567 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 15:29:10,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 15:29:10,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-10 15:29:10,569 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-10 15:29:10,569 INFO L138 SettingsManager]: * Use SBE=true [2020-07-10 15:29:10,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 15:29:10,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 15:29:10,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 15:29:10,570 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 15:29:10,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 15:29:10,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 15:29:10,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 15:29:10,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 15:29:10,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 15:29:10,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 15:29:10,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 15:29:10,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 15:29:10,572 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 15:29:10,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-10 15:29:10,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 15:29:10,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 15:29:10,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 15:29:10,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 15:29:10,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-10 15:29:10,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-10 15:29:10,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-10 15:29:10,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-10 15:29:10,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 15:29:10,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-10 15:29:10,574 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-10 15:29:10,900 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 15:29:10,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 15:29:10,921 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 15:29:10,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 15:29:10,923 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 15:29:10,923 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gcnr2008.i [2020-07-10 15:29:10,992 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad04cf6f/6e6e79eb3a4f40f78d975cbeaee6b8a1/FLAG3e5ae376b [2020-07-10 15:29:11,438 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 15:29:11,439 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gcnr2008.i [2020-07-10 15:29:11,446 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad04cf6f/6e6e79eb3a4f40f78d975cbeaee6b8a1/FLAG3e5ae376b [2020-07-10 15:29:11,468 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bad04cf6f/6e6e79eb3a4f40f78d975cbeaee6b8a1 [2020-07-10 15:29:11,480 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 15:29:11,482 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 15:29:11,483 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 15:29:11,484 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 15:29:11,487 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 15:29:11,489 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:29:11" (1/1) ... [2020-07-10 15:29:11,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@129bb515 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:29:11, skipping insertion in model container [2020-07-10 15:29:11,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 03:29:11" (1/1) ... [2020-07-10 15:29:11,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 15:29:11,521 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 15:29:11,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:29:11,779 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 15:29:11,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 15:29:11,824 INFO L208 MainTranslator]: Completed translation [2020-07-10 15:29:11,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:29:11 WrapperNode [2020-07-10 15:29:11,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 15:29:11,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 15:29:11,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 15:29:11,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 15:29:11,842 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:29:11" (1/1) ... [2020-07-10 15:29:11,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:29:11" (1/1) ... [2020-07-10 15:29:11,850 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:29:11" (1/1) ... [2020-07-10 15:29:11,851 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:29:11" (1/1) ... [2020-07-10 15:29:11,861 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:29:11" (1/1) ... [2020-07-10 15:29:11,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:29:11" (1/1) ... [2020-07-10 15:29:11,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:29:11" (1/1) ... [2020-07-10 15:29:11,959 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 15:29:11,961 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 15:29:11,961 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 15:29:11,962 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 15:29:11,963 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:29:11" (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 [2020-07-10 15:29:12,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 15:29:12,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 15:29:12,026 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-10 15:29:12,026 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 15:29:12,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 15:29:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 15:29:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-10 15:29:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-10 15:29:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 15:29:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 15:29:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 15:29:12,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 15:29:12,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 15:29:12,330 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 15:29:12,330 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 15:29:12,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:29:12 BoogieIcfgContainer [2020-07-10 15:29:12,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 15:29:12,337 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 15:29:12,337 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 15:29:12,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 15:29:12,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 03:29:11" (1/3) ... [2020-07-10 15:29:12,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dd2584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:29:12, skipping insertion in model container [2020-07-10 15:29:12,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 03:29:11" (2/3) ... [2020-07-10 15:29:12,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51dd2584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 03:29:12, skipping insertion in model container [2020-07-10 15:29:12,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 03:29:12" (3/3) ... [2020-07-10 15:29:12,345 INFO L109 eAbstractionObserver]: Analyzing ICFG gcnr2008.i [2020-07-10 15:29:12,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-10 15:29:12,396 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 15:29:12,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 15:29:12,448 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 15:29:12,448 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 15:29:12,448 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-10 15:29:12,448 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 15:29:12,449 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 15:29:12,449 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 15:29:12,449 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 15:29:12,449 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 15:29:12,473 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-10 15:29:12,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-10 15:29:12,481 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:29:12,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:29:12,482 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:29:12,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:29:12,489 INFO L82 PathProgramCache]: Analyzing trace with hash 820478905, now seen corresponding path program 1 times [2020-07-10 15:29:12,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:29:12,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15674316] [2020-07-10 15:29:12,501 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:29:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:29:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 15:29:12,674 INFO L280 TraceCheckUtils]: 0: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-10 15:29:12,675 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {27#true} {27#true} #64#return; {27#true} is VALID [2020-07-10 15:29:12,679 INFO L263 TraceCheckUtils]: 0: Hoare triple {27#true} call ULTIMATE.init(); {27#true} is VALID [2020-07-10 15:29:12,679 INFO L280 TraceCheckUtils]: 1: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-10 15:29:12,680 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {27#true} {27#true} #64#return; {27#true} is VALID [2020-07-10 15:29:12,680 INFO L263 TraceCheckUtils]: 3: Hoare triple {27#true} call #t~ret3 := main(); {27#true} is VALID [2020-07-10 15:29:12,680 INFO L280 TraceCheckUtils]: 4: Hoare triple {27#true} havoc ~x~0;havoc ~y~0;havoc ~z~0;havoc ~w~0;~w~0 := 0;~z~0 := ~w~0;~y~0 := ~z~0;~x~0 := ~y~0; {27#true} is VALID [2020-07-10 15:29:12,685 INFO L280 TraceCheckUtils]: 5: Hoare triple {27#true} assume !true; {28#false} is VALID [2020-07-10 15:29:12,685 INFO L263 TraceCheckUtils]: 6: Hoare triple {28#false} call __VERIFIER_assert((if ~x~0 >= 4 && ~y~0 <= 2 then 1 else 0)); {28#false} is VALID [2020-07-10 15:29:12,686 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#false} ~cond := #in~cond; {28#false} is VALID [2020-07-10 15:29:12,686 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#false} assume 0 == ~cond; {28#false} is VALID [2020-07-10 15:29:12,686 INFO L280 TraceCheckUtils]: 9: Hoare triple {28#false} assume !false; {28#false} is VALID [2020-07-10 15:29:12,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-10 15:29:12,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15674316] [2020-07-10 15:29:12,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 15:29:12,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 15:29:12,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805262650] [2020-07-10 15:29:12,696 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-10 15:29:12,698 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 15:29:12,702 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 15:29:12,728 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:29:12,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 15:29:12,729 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-10 15:29:12,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 15:29:12,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 15:29:12,740 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-07-10 15:29:12,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:29:12,817 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-07-10 15:29:12,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 15:29:12,817 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-10 15:29:12,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 15:29:12,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 15:29:12,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 43 transitions. [2020-07-10 15:29:12,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 15:29:12,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 43 transitions. [2020-07-10 15:29:12,832 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 43 transitions. [2020-07-10 15:29:12,906 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 15:29:12,917 INFO L225 Difference]: With dead ends: 36 [2020-07-10 15:29:12,918 INFO L226 Difference]: Without dead ends: 17 [2020-07-10 15:29:12,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 15:29:12,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-10 15:29:12,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-10 15:29:12,961 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 15:29:12,961 INFO L82 GeneralOperation]: Start isEquivalent. First operand 17 states. Second operand 17 states. [2020-07-10 15:29:12,962 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 17 states. [2020-07-10 15:29:12,962 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 17 states. [2020-07-10 15:29:12,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:29:12,967 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-07-10 15:29:12,967 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-07-10 15:29:12,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:29:12,968 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:29:12,968 INFO L74 IsIncluded]: Start isIncluded. First operand 17 states. Second operand 17 states. [2020-07-10 15:29:12,969 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 17 states. [2020-07-10 15:29:12,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 15:29:12,973 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2020-07-10 15:29:12,973 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-07-10 15:29:12,974 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 15:29:12,974 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 15:29:12,974 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 15:29:12,974 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 15:29:12,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-10 15:29:12,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-07-10 15:29:12,983 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 10 [2020-07-10 15:29:12,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 15:29:12,984 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-07-10 15:29:12,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 15:29:12,984 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-07-10 15:29:12,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-10 15:29:12,985 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 15:29:12,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 15:29:12,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 15:29:12,987 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 15:29:12,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 15:29:12,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1236793761, now seen corresponding path program 1 times [2020-07-10 15:29:12,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-10 15:29:12,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045367272] [2020-07-10 15:29:12,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 15:29:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 15:29:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 15:29:13,090 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-10 15:29:13,091 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 15:29:13,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 15:29:13,111 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 15:29:13,111 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 15:29:13,111 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 15:29:13,111 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-10 15:29:13,112 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 15:29:13,112 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-10 15:29:13,112 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 15:29:13,112 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 15:29:13,112 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 15:29:13,112 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 15:29:13,112 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 15:29:13,113 WARN L170 areAnnotationChecker]: L16-3 has no Hoare annotation [2020-07-10 15:29:13,113 WARN L170 areAnnotationChecker]: L16-3 has no Hoare annotation [2020-07-10 15:29:13,113 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-10 15:29:13,113 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-10 15:29:13,113 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 15:29:13,113 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-10 15:29:13,114 WARN L170 areAnnotationChecker]: L16-4 has no Hoare annotation [2020-07-10 15:29:13,114 WARN L170 areAnnotationChecker]: L16-4 has no Hoare annotation [2020-07-10 15:29:13,114 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-10 15:29:13,114 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-10 15:29:13,114 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-10 15:29:13,114 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-10 15:29:13,115 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2020-07-10 15:29:13,115 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-10 15:29:13,115 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-10 15:29:13,115 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-10 15:29:13,115 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 15:29:13,115 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 15:29:13,115 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-10 15:29:13,115 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-10 15:29:13,116 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-10 15:29:13,116 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 15:29:13,116 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-10 15:29:13,116 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-10 15:29:13,116 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-10 15:29:13,116 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-10 15:29:13,117 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-10 15:29:13,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 03:29:13 BoogieIcfgContainer [2020-07-10 15:29:13,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 15:29:13,122 INFO L168 Benchmark]: Toolchain (without parser) took 1640.13 ms. Allocated memory was 142.1 MB in the beginning and 199.2 MB in the end (delta: 57.1 MB). Free memory was 100.2 MB in the beginning and 114.0 MB in the end (delta: -13.8 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-07-10 15:29:13,123 INFO L168 Benchmark]: CDTParser took 0.47 ms. Allocated memory is still 142.1 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-10 15:29:13,124 INFO L168 Benchmark]: CACSL2BoogieTranslator took 342.39 ms. Allocated memory is still 142.1 MB. Free memory was 100.0 MB in the beginning and 90.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-10 15:29:13,125 INFO L168 Benchmark]: Boogie Preprocessor took 134.77 ms. Allocated memory was 142.1 MB in the beginning and 199.2 MB in the end (delta: 57.1 MB). Free memory was 90.0 MB in the beginning and 178.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-10 15:29:13,126 INFO L168 Benchmark]: RCFGBuilder took 373.91 ms. Allocated memory is still 199.2 MB. Free memory was 178.0 MB in the beginning and 158.3 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-07-10 15:29:13,127 INFO L168 Benchmark]: TraceAbstraction took 782.63 ms. Allocated memory is still 199.2 MB. Free memory was 157.5 MB in the beginning and 114.0 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. [2020-07-10 15:29:13,130 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.47 ms. Allocated memory is still 142.1 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 342.39 ms. Allocated memory is still 142.1 MB. Free memory was 100.0 MB in the beginning and 90.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.77 ms. Allocated memory was 142.1 MB in the beginning and 199.2 MB in the end (delta: 57.1 MB). Free memory was 90.0 MB in the beginning and 178.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 373.91 ms. Allocated memory is still 199.2 MB. Free memory was 178.0 MB in the beginning and 158.3 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 782.63 ms. Allocated memory is still 199.2 MB. Free memory was 157.5 MB in the beginning and 114.0 MB in the end (delta: 43.5 MB). Peak memory consumption was 43.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int x,y,z,w; [L15] EXPR w = 0 [L15] EXPR z = w = 0 [L15] EXPR y = z = w = 0 [L15] x = y = z = w = 0 VAL [w=0, x=0, y=0, z=0] [L16] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L31] CALL __VERIFIER_assert(x >= 4 && y <= 2) VAL [\old(cond)=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 81 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...