/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-46f3038-m [2020-07-08 23:37:19,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-08 23:37:19,505 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-08 23:37:19,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-08 23:37:19,522 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-08 23:37:19,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-08 23:37:19,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-08 23:37:19,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-08 23:37:19,531 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-08 23:37:19,532 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-08 23:37:19,533 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-08 23:37:19,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-08 23:37:19,535 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-08 23:37:19,536 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-08 23:37:19,538 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-08 23:37:19,539 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-08 23:37:19,541 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-08 23:37:19,542 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-08 23:37:19,544 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-08 23:37:19,546 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-08 23:37:19,548 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-08 23:37:19,550 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-08 23:37:19,551 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-08 23:37:19,552 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-08 23:37:19,554 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-08 23:37:19,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-08 23:37:19,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-08 23:37:19,569 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-08 23:37:19,573 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-08 23:37:19,590 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-08 23:37:19,591 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-08 23:37:19,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-08 23:37:19,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-08 23:37:19,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-08 23:37:19,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-08 23:37:19,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-08 23:37:19,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-08 23:37:19,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-08 23:37:19,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-08 23:37:19,597 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-08 23:37:19,597 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-08 23:37:19,597 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-08 23:37:19,597 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-08 23:37:19,598 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-08 23:37:19,598 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-08 23:37:19,598 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-08 23:37:19,599 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-08 23:37:19,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-08 23:37:19,599 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-08 23:37:19,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-08 23:37:19,600 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-08 23:37:19,600 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-08 23:37:19,902 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-08 23:37:19,930 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-08 23:37:19,935 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-08 23:37:19,937 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-08 23:37:19,938 INFO L275 PluginConnector]: CDTParser initialized [2020-07-08 23:37:19,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-1.c [2020-07-08 23:37:20,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5297b528d/1327e08457494afd8e17111e61360db1/FLAGaab5c82c8 [2020-07-08 23:37:20,650 INFO L306 CDTParser]: Found 1 translation units. [2020-07-08 23:37:20,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-1.c [2020-07-08 23:37:20,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5297b528d/1327e08457494afd8e17111e61360db1/FLAGaab5c82c8 [2020-07-08 23:37:21,065 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5297b528d/1327e08457494afd8e17111e61360db1 [2020-07-08 23:37:21,083 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-08 23:37:21,085 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-08 23:37:21,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-08 23:37:21,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-08 23:37:21,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-08 23:37:21,093 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:37:21" (1/1) ... [2020-07-08 23:37:21,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779759fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:21, skipping insertion in model container [2020-07-08 23:37:21,098 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.07 11:37:21" (1/1) ... [2020-07-08 23:37:21,108 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-08 23:37:21,131 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-08 23:37:21,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:37:21,357 INFO L203 MainTranslator]: Completed pre-run [2020-07-08 23:37:21,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-08 23:37:21,395 INFO L208 MainTranslator]: Completed translation [2020-07-08 23:37:21,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:21 WrapperNode [2020-07-08 23:37:21,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-08 23:37:21,397 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-08 23:37:21,398 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-08 23:37:21,398 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-08 23:37:21,415 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:21" (1/1) ... [2020-07-08 23:37:21,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:21" (1/1) ... [2020-07-08 23:37:21,510 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:21" (1/1) ... [2020-07-08 23:37:21,511 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:21" (1/1) ... [2020-07-08 23:37:21,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:21" (1/1) ... [2020-07-08 23:37:21,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:21" (1/1) ... [2020-07-08 23:37:21,535 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:21" (1/1) ... [2020-07-08 23:37:21,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-08 23:37:21,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-08 23:37:21,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-08 23:37:21,538 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-08 23:37:21,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:21" (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 [2020-07-08 23:37:21,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-08 23:37:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-08 23:37:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-08 23:37:21,614 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-08 23:37:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-08 23:37:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-08 23:37:21,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-08 23:37:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-08 23:37:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-08 23:37:21,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-08 23:37:21,901 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-08 23:37:21,901 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-08 23:37:21,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:37:21 BoogieIcfgContainer [2020-07-08 23:37:21,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-08 23:37:21,908 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-08 23:37:21,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-08 23:37:21,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-08 23:37:21,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.07 11:37:21" (1/3) ... [2020-07-08 23:37:21,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353c1e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:37:21, skipping insertion in model container [2020-07-08 23:37:21,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.07 11:37:21" (2/3) ... [2020-07-08 23:37:21,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@353c1e4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.07 11:37:21, skipping insertion in model container [2020-07-08 23:37:21,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.07 11:37:21" (3/3) ... [2020-07-08 23:37:21,922 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_03-1.c [2020-07-08 23:37:21,949 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-08 23:37:21,960 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-08 23:37:21,985 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-08 23:37:22,023 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-08 23:37:22,024 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-08 23:37:22,024 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-08 23:37:22,024 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-08 23:37:22,025 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-08 23:37:22,025 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-08 23:37:22,025 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-08 23:37:22,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-08 23:37:22,049 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-07-08 23:37:22,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-08 23:37:22,062 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:37:22,064 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:37:22,064 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:37:22,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:37:22,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1947240340, now seen corresponding path program 1 times [2020-07-08 23:37:22,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:37:22,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [606339668] [2020-07-08 23:37:22,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:37:22,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:37:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-08 23:37:22,372 INFO L280 TraceCheckUtils]: 0: Hoare triple {28#true} assume true; {28#true} is VALID [2020-07-08 23:37:22,373 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {28#true} {28#true} #44#return; {28#true} is VALID [2020-07-08 23:37:22,375 INFO L263 TraceCheckUtils]: 0: Hoare triple {28#true} call ULTIMATE.init(); {28#true} is VALID [2020-07-08 23:37:22,376 INFO L280 TraceCheckUtils]: 1: Hoare triple {28#true} assume true; {28#true} is VALID [2020-07-08 23:37:22,376 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {28#true} {28#true} #44#return; {28#true} is VALID [2020-07-08 23:37:22,376 INFO L263 TraceCheckUtils]: 3: Hoare triple {28#true} call #t~ret2 := main(); {28#true} is VALID [2020-07-08 23:37:22,377 INFO L280 TraceCheckUtils]: 4: Hoare triple {28#true} assume -2147483648 <= #t~nondet0 && #t~nondet0 <= 2147483647; {28#true} is VALID [2020-07-08 23:37:22,377 INFO L280 TraceCheckUtils]: 5: Hoare triple {28#true} ~x~0 := #t~nondet0; {28#true} is VALID [2020-07-08 23:37:22,378 INFO L280 TraceCheckUtils]: 6: Hoare triple {28#true} havoc #t~nondet0; {28#true} is VALID [2020-07-08 23:37:22,378 INFO L280 TraceCheckUtils]: 7: Hoare triple {28#true} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {28#true} is VALID [2020-07-08 23:37:22,379 INFO L280 TraceCheckUtils]: 8: Hoare triple {28#true} ~y~0 := #t~nondet1; {28#true} is VALID [2020-07-08 23:37:22,379 INFO L280 TraceCheckUtils]: 9: Hoare triple {28#true} havoc #t~nondet1; {28#true} is VALID [2020-07-08 23:37:22,382 INFO L280 TraceCheckUtils]: 10: Hoare triple {28#true} assume !(~y~0 > 0); {32#(<= main_~y~0 0)} is VALID [2020-07-08 23:37:22,386 INFO L263 TraceCheckUtils]: 11: Hoare triple {32#(<= main_~y~0 0)} call __VERIFIER_assert((if ~y~0 <= 0 || (~y~0 < 0 && ~x~0 >= 100) then 1 else 0)); {33#(not (= 0 |__VERIFIER_assert_#in~cond|))} is VALID [2020-07-08 23:37:22,390 INFO L280 TraceCheckUtils]: 12: Hoare triple {33#(not (= 0 |__VERIFIER_assert_#in~cond|))} ~cond := #in~cond; {34#(not (= 0 __VERIFIER_assert_~cond))} is VALID [2020-07-08 23:37:22,392 INFO L280 TraceCheckUtils]: 13: Hoare triple {34#(not (= 0 __VERIFIER_assert_~cond))} assume 0 == ~cond; {29#false} is VALID [2020-07-08 23:37:22,392 INFO L280 TraceCheckUtils]: 14: Hoare triple {29#false} assume !false; {29#false} is VALID [2020-07-08 23:37:22,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-08 23:37:22,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [606339668] [2020-07-08 23:37:22,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-08 23:37:22,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-08 23:37:22,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785350981] [2020-07-08 23:37:22,408 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-08 23:37:22,412 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-08 23:37:22,417 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-08 23:37:22,469 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 15 edges. 15 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:37:22,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-08 23:37:22,470 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-08 23:37:22,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-08 23:37:22,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-08 23:37:22,481 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-07-08 23:37:22,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:37:22,805 INFO L93 Difference]: Finished difference Result 45 states and 51 transitions. [2020-07-08 23:37:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-08 23:37:22,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-08 23:37:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-08 23:37:22,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 23:37:22,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2020-07-08 23:37:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-08 23:37:22,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 51 transitions. [2020-07-08 23:37:22,831 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 6 states and 51 transitions. [2020-07-08 23:37:22,930 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 51 edges. 51 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:37:22,943 INFO L225 Difference]: With dead ends: 45 [2020-07-08 23:37:22,944 INFO L226 Difference]: Without dead ends: 18 [2020-07-08 23:37:22,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-08 23:37:22,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-08 23:37:23,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-07-08 23:37:23,004 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-08 23:37:23,005 INFO L82 GeneralOperation]: Start isEquivalent. First operand 18 states. Second operand 18 states. [2020-07-08 23:37:23,007 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-08 23:37:23,007 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-08 23:37:23,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:37:23,012 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-08 23:37:23,012 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-08 23:37:23,013 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:37:23,013 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:37:23,014 INFO L74 IsIncluded]: Start isIncluded. First operand 18 states. Second operand 18 states. [2020-07-08 23:37:23,014 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 18 states. [2020-07-08 23:37:23,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-08 23:37:23,018 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-08 23:37:23,018 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-08 23:37:23,019 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-08 23:37:23,019 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-08 23:37:23,019 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-08 23:37:23,020 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-08 23:37:23,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-08 23:37:23,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-07-08 23:37:23,025 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2020-07-08 23:37:23,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-08 23:37:23,025 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-07-08 23:37:23,025 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-08 23:37:23,026 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 18 states and 18 transitions. [2020-07-08 23:37:23,055 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 18 edges. 18 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-08 23:37:23,055 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-07-08 23:37:23,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-08 23:37:23,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-08 23:37:23,056 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-08 23:37:23,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-08 23:37:23,057 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-08 23:37:23,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-08 23:37:23,058 INFO L82 PathProgramCache]: Analyzing trace with hash -219943500, now seen corresponding path program 1 times [2020-07-08 23:37:23,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-08 23:37:23,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958847437] [2020-07-08 23:37:23,059 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-08 23:37:23,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 23:37:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-08 23:37:23,113 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-08 23:37:23,114 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-08 23:37:23,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-08 23:37:23,140 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-08 23:37:23,140 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 23:37:23,140 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-08 23:37:23,141 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-08 23:37:23,141 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-08 23:37:23,141 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-08 23:37:23,141 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 23:37:23,142 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-08 23:37:23,142 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2020-07-08 23:37:23,142 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 23:37:23,142 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-08 23:37:23,143 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-08 23:37:23,143 WARN L170 areAnnotationChecker]: L13-1 has no Hoare annotation [2020-07-08 23:37:23,143 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 23:37:23,143 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-08 23:37:23,143 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-08 23:37:23,144 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-08 23:37:23,144 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-08 23:37:23,144 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-08 23:37:23,144 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-08 23:37:23,144 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-08 23:37:23,145 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-08 23:37:23,145 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-08 23:37:23,145 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-08 23:37:23,145 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-08 23:37:23,145 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-08 23:37:23,146 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-08 23:37:23,146 WARN L170 areAnnotationChecker]: L18-2 has no Hoare annotation [2020-07-08 23:37:23,146 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-08 23:37:23,146 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-08 23:37:23,146 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-08 23:37:23,147 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. [2020-07-08 23:37:23,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.07 11:37:23 BoogieIcfgContainer [2020-07-08 23:37:23,152 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-08 23:37:23,157 INFO L168 Benchmark]: Toolchain (without parser) took 2070.63 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 99.8 MB in the beginning and 87.7 MB in the end (delta: 12.2 MB). Peak memory consumption was 76.2 MB. Max. memory is 7.1 GB. [2020-07-08 23:37:23,158 INFO L168 Benchmark]: CDTParser took 0.43 ms. Allocated memory is still 136.3 MB. Free memory was 118.5 MB in the beginning and 118.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-08 23:37:23,159 INFO L168 Benchmark]: CACSL2BoogieTranslator took 310.29 ms. Allocated memory is still 136.3 MB. Free memory was 99.4 MB in the beginning and 90.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-08 23:37:23,160 INFO L168 Benchmark]: Boogie Preprocessor took 139.99 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 89.9 MB in the beginning and 179.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. [2020-07-08 23:37:23,162 INFO L168 Benchmark]: RCFGBuilder took 369.53 ms. Allocated memory is still 200.3 MB. Free memory was 178.8 MB in the beginning and 162.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. [2020-07-08 23:37:23,163 INFO L168 Benchmark]: TraceAbstraction took 1243.57 ms. Allocated memory is still 200.3 MB. Free memory was 162.0 MB in the beginning and 87.7 MB in the end (delta: 74.4 MB). Peak memory consumption was 74.4 MB. Max. memory is 7.1 GB. [2020-07-08 23:37:23,167 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 0.43 ms. Allocated memory is still 136.3 MB. Free memory was 118.5 MB in the beginning and 118.2 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 310.29 ms. Allocated memory is still 136.3 MB. Free memory was 99.4 MB in the beginning and 90.1 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.99 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 89.9 MB in the beginning and 179.5 MB in the end (delta: -89.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 369.53 ms. Allocated memory is still 200.3 MB. Free memory was 178.8 MB in the beginning and 162.7 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1243.57 ms. Allocated memory is still 200.3 MB. Free memory was 162.0 MB in the beginning and 87.7 MB in the end (delta: 74.4 MB). Peak memory consumption was 74.4 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: [L13] int x=__VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=100, x=100] [L14] int y=__VERIFIER_nondet_int(); VAL [__VERIFIER_nondet_int()=1, x=100, y=1] [L16] COND TRUE y>0 VAL [x=100, y=1] [L18] COND FALSE !(x<100) VAL [x=100, y=1] [L23] CALL __VERIFIER_assert(y<=0 || (y<0 && x>=100)) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 8 SDslu, 66 SDs, 0 SdLazy, 14 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 0.1s InterpolantComputationTime, 31 NumberOfCodeBlocks, 31 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 308 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...