/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/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/while_infinite_loop_4.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 20:22:27,391 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 20:22:27,392 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 20:22:27,407 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 20:22:27,407 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 20:22:27,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 20:22:27,410 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 20:22:27,423 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 20:22:27,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 20:22:27,426 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 20:22:27,428 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 20:22:27,430 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 20:22:27,430 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 20:22:27,431 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 20:22:27,434 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 20:22:27,436 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 20:22:27,439 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 20:22:27,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 20:22:27,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 20:22:27,450 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 20:22:27,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 20:22:27,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 20:22:27,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 20:22:27,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 20:22:27,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 20:22:27,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 20:22:27,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 20:22:27,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 20:22:27,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-10 20:22:27,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 20:22:27,492 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 20:22:27,494 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 20:22:27,494 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 20:22:27,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 20:22:27,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 20:22:27,495 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 20:22:27,495 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 20:22:27,495 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 20:22:27,495 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 20:22:27,496 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 20:22:27,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 20:22:27,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 20:22:27,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 20:22:27,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 20:22:27,498 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 20:22:27,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 20:22:27,498 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 20:22:27,498 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:22:27,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 20:22:27,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 20:22:27,499 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 20:22:27,499 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 20:22:27,785 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 20:22:27,799 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 20:22:27,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 20:22:27,804 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 20:22:27,805 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 20:22:27,805 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/while_infinite_loop_4.c [2020-07-10 20:22:27,884 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0ba5a8e/b4ebe3eda49747d0a36d329f1b019608/FLAG189b35b03 [2020-07-10 20:22:28,325 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 20:22:28,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/while_infinite_loop_4.c [2020-07-10 20:22:28,333 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0ba5a8e/b4ebe3eda49747d0a36d329f1b019608/FLAG189b35b03 [2020-07-10 20:22:28,731 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f0ba5a8e/b4ebe3eda49747d0a36d329f1b019608 [2020-07-10 20:22:28,741 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 20:22:28,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 20:22:28,744 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:28,744 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 20:22:28,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 20:22:28,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ade220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28, skipping insertion in model container [2020-07-10 20:22:28,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,760 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 20:22:28,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 20:22:28,935 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:28,943 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 20:22:28,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:22:28,977 INFO L208 MainTranslator]: Completed translation [2020-07-10 20:22:28,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28 WrapperNode [2020-07-10 20:22:28,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 20:22:28,979 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 20:22:28,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 20:22:28,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 20:22:28,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,997 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:28,998 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:29,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:29,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:29,009 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (1/1) ... [2020-07-10 20:22:29,101 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 20:22:29,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 20:22:29,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 20:22:29,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 20:22:29,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (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 20:22:29,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 20:22:29,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 20:22:29,172 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 20:22:29,172 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2020-07-10 20:22:29,172 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 20:22:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 20:22:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 20:22:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2020-07-10 20:22:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 20:22:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 20:22:29,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 20:22:29,418 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 20:22:29,419 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-10 20:22:29,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:29 BoogieIcfgContainer [2020-07-10 20:22:29,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 20:22:29,433 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 20:22:29,433 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 20:22:29,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 20:22:29,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 08:22:28" (1/3) ... [2020-07-10 20:22:29,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e44b342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:29, skipping insertion in model container [2020-07-10 20:22:29,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:22:28" (2/3) ... [2020-07-10 20:22:29,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e44b342 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:22:29, skipping insertion in model container [2020-07-10 20:22:29,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:22:29" (3/3) ... [2020-07-10 20:22:29,441 INFO L109 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_4.c [2020-07-10 20:22:29,452 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 20:22:29,460 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 20:22:29,474 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 20:22:29,496 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 20:22:29,496 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 20:22:29,496 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 20:22:29,497 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 20:22:29,497 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 20:22:29,497 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 20:22:29,497 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 20:22:29,497 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 20:22:29,512 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-10 20:22:29,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-10 20:22:29,523 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:22:29,524 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:22:29,525 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:22:29,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:22:29,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1063393928, now seen corresponding path program 1 times [2020-07-10 20:22:29,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:22:29,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522212516] [2020-07-10 20:22:29,542 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:22:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:22:29,744 INFO L280 TraceCheckUtils]: 0: Hoare triple {32#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {27#true} is VALID [2020-07-10 20:22:29,745 INFO L280 TraceCheckUtils]: 1: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-10 20:22:29,745 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {27#true} {27#true} #46#return; {27#true} is VALID [2020-07-10 20:22:29,755 INFO L263 TraceCheckUtils]: 0: Hoare triple {27#true} call ULTIMATE.init(); {32#(= ~x~0 |old(~x~0)|)} is VALID [2020-07-10 20:22:29,755 INFO L280 TraceCheckUtils]: 1: Hoare triple {32#(= ~x~0 |old(~x~0)|)} ~x~0 := 0; {27#true} is VALID [2020-07-10 20:22:29,756 INFO L280 TraceCheckUtils]: 2: Hoare triple {27#true} assume true; {27#true} is VALID [2020-07-10 20:22:29,756 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {27#true} {27#true} #46#return; {27#true} is VALID [2020-07-10 20:22:29,757 INFO L263 TraceCheckUtils]: 4: Hoare triple {27#true} call #t~ret0 := main(); {27#true} is VALID [2020-07-10 20:22:29,761 INFO L280 TraceCheckUtils]: 5: Hoare triple {27#true} assume false; {28#false} is VALID [2020-07-10 20:22:29,762 INFO L263 TraceCheckUtils]: 6: Hoare triple {28#false} call __VERIFIER_assert((if 0 == ~x~0 then 1 else 0)); {28#false} is VALID [2020-07-10 20:22:29,762 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#false} ~cond := #in~cond; {28#false} is VALID [2020-07-10 20:22:29,762 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#false} assume 0 == ~cond; {28#false} is VALID [2020-07-10 20:22:29,763 INFO L280 TraceCheckUtils]: 9: Hoare triple {28#false} assume !false; {28#false} is VALID [2020-07-10 20:22:29,764 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 20:22:29,764 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:22:29,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522212516] [2020-07-10 20:22:29,768 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:22:29,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-10 20:22:29,769 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656810352] [2020-07-10 20:22:29,776 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-10 20:22:29,779 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:22:29,783 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-10 20:22:29,812 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 20:22:29,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-10 20:22:29,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:22:29,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-10 20:22:29,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-10 20:22:29,825 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2020-07-10 20:22:30,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:30,019 INFO L93 Difference]: Finished difference Result 39 states and 55 transitions. [2020-07-10 20:22:30,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-10 20:22:30,020 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-10 20:22:30,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:22:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-10 20:22:30,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2020-07-10 20:22:30,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-10 20:22:30,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 55 transitions. [2020-07-10 20:22:30,039 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 55 transitions. [2020-07-10 20:22:30,146 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:30,160 INFO L225 Difference]: With dead ends: 39 [2020-07-10 20:22:30,160 INFO L226 Difference]: Without dead ends: 20 [2020-07-10 20:22:30,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-10 20:22:30,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-10 20:22:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-07-10 20:22:30,230 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:22:30,231 INFO L82 GeneralOperation]: Start isEquivalent. First operand 20 states. Second operand 18 states. [2020-07-10 20:22:30,231 INFO L74 IsIncluded]: Start isIncluded. First operand 20 states. Second operand 18 states. [2020-07-10 20:22:30,231 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 18 states. [2020-07-10 20:22:30,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:30,237 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-07-10 20:22:30,237 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-10 20:22:30,238 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:30,238 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:30,239 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 20 states. [2020-07-10 20:22:30,239 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 20 states. [2020-07-10 20:22:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:22:30,243 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2020-07-10 20:22:30,243 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-10 20:22:30,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:22:30,244 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:22:30,244 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:22:30,245 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:22:30,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-10 20:22:30,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-10 20:22:30,249 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 10 [2020-07-10 20:22:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:22:30,249 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-10 20:22:30,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-10 20:22:30,250 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 18 states and 18 transitions. [2020-07-10 20:22:30,278 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:22:30,279 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-10 20:22:30,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-10 20:22:30,280 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:22:30,280 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:22:30,280 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 20:22:30,281 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:22:30,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:22:30,281 INFO L82 PathProgramCache]: Analyzing trace with hash 1652124924, now seen corresponding path program 1 times [2020-07-10 20:22:30,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:22:30,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112415656] [2020-07-10 20:22:30,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:22:30,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 20:22:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 20:22:30,340 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:22:30,341 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-10 20:22:30,341 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 20:22:30,342 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 20:22:30,356 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-10 20:22:30,356 WARN L170 areAnnotationChecker]: evalENTRY has no Hoare annotation [2020-07-10 20:22:30,357 WARN L170 areAnnotationChecker]: evalENTRY has no Hoare annotation [2020-07-10 20:22:30,357 WARN L170 areAnnotationChecker]: evalENTRY has no Hoare annotation [2020-07-10 20:22:30,357 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 20:22:30,357 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 20:22:30,357 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-10 20:22:30,357 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-10 20:22:30,358 WARN L170 areAnnotationChecker]: L27 has no Hoare annotation [2020-07-10 20:22:30,358 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-10 20:22:30,358 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 20:22:30,358 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-10 20:22:30,358 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-10 20:22:30,358 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 20:22:30,359 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 20:22:30,359 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-10 20:22:30,359 WARN L170 areAnnotationChecker]: L24-1 has no Hoare annotation [2020-07-10 20:22:30,359 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-10 20:22:30,359 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-10 20:22:30,359 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 20:22:30,360 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 20:22:30,360 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 20:22:30,360 WARN L170 areAnnotationChecker]: evalEXIT has no Hoare annotation [2020-07-10 20:22:30,360 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 20:22:30,360 WARN L170 areAnnotationChecker]: L30 has no Hoare annotation [2020-07-10 20:22:30,361 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2020-07-10 20:22:30,361 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2020-07-10 20:22:30,361 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 20:22:30,361 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 20:22:30,361 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-10 20:22:30,361 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 20:22:30,362 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 20:22:30,362 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 20:22:30,362 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 20:22:30,362 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 20:22:30,366 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 08:22:30 BoogieIcfgContainer [2020-07-10 20:22:30,366 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 20:22:30,370 INFO L168 Benchmark]: Toolchain (without parser) took 1626.01 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 104.8 MB in the beginning and 107.0 MB in the end (delta: -2.2 MB). Peak memory consumption was 55.5 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,371 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 146.3 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,372 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.00 ms. Allocated memory is still 146.3 MB. Free memory was 104.3 MB in the beginning and 94.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,373 INFO L168 Benchmark]: Boogie Preprocessor took 122.04 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 94.9 MB in the beginning and 184.1 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,374 INFO L168 Benchmark]: RCFGBuilder took 322.60 ms. Allocated memory is still 203.9 MB. Free memory was 184.1 MB in the beginning and 169.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,375 INFO L168 Benchmark]: TraceAbstraction took 932.89 ms. Allocated memory is still 203.9 MB. Free memory was 169.0 MB in the beginning and 107.0 MB in the end (delta: 62.0 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. [2020-07-10 20:22:30,379 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 0.15 ms. Allocated memory is still 146.3 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 235.00 ms. Allocated memory is still 146.3 MB. Free memory was 104.3 MB in the beginning and 94.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.04 ms. Allocated memory was 146.3 MB in the beginning and 203.9 MB in the end (delta: 57.7 MB). Free memory was 94.9 MB in the beginning and 184.1 MB in the end (delta: -89.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 322.60 ms. Allocated memory is still 203.9 MB. Free memory was 184.1 MB in the beginning and 169.0 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 932.89 ms. Allocated memory is still 203.9 MB. Free memory was 169.0 MB in the beginning and 107.0 MB in the end (delta: 62.0 MB). Peak memory consumption was 62.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] int x=0; [L24] COND TRUE 1 [L26] CALL eval() [L14] COND TRUE 1 [L15] x=1 [L26] RET eval() [L27] CALL __VERIFIER_assert(x==0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 19 SDtfs, 7 SDslu, 5 SDs, 0 SdLazy, 4 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...