/usr/bin/java -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/terminator_01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:59:00,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:59:00,886 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:59:00,908 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:59:00,909 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:59:00,910 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:59:00,912 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:59:00,916 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:59:00,924 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:59:00,926 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:59:00,927 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:59:00,928 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:59:00,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:59:00,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:59:00,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:59:00,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:59:00,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:59:00,939 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:59:00,941 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:59:00,946 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:59:00,948 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:59:00,952 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:59:00,953 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:59:00,955 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:59:00,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:59:00,964 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:59:00,965 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:59:00,967 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:59:00,967 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:59:00,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:59:00,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:59:00,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:59:00,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:59:00,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:59:00,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:59:00,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:59:00,976 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:59:01,006 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:59:01,007 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:59:01,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:59:01,009 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:59:01,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:59:01,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:59:01,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:59:01,010 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:59:01,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:59:01,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:59:01,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:59:01,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:59:01,016 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:59:01,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:59:01,016 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:59:01,017 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:59:01,017 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:59:01,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:59:01,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:59:01,017 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:59:01,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:59:01,018 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:59:01,018 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:59:01,285 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:59:01,303 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:59:01,307 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:59:01,308 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:59:01,309 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:59:01,309 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_01.c [2020-07-07 13:59:01,384 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c26469a0/6302836fbb3a4a2eba820c1922d69e9a/FLAG19daaf2a8 [2020-07-07 13:59:01,816 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:59:01,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_01.c [2020-07-07 13:59:01,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c26469a0/6302836fbb3a4a2eba820c1922d69e9a/FLAG19daaf2a8 [2020-07-07 13:59:02,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c26469a0/6302836fbb3a4a2eba820c1922d69e9a [2020-07-07 13:59:02,210 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:59:02,212 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:59:02,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:59:02,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:59:02,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:59:02,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:59:02" (1/1) ... [2020-07-07 13:59:02,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ca0491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:02, skipping insertion in model container [2020-07-07 13:59:02,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:59:02" (1/1) ... [2020-07-07 13:59:02,230 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:59:02,247 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:59:02,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:59:02,431 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:59:02,445 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:59:02,458 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:59:02,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:02 WrapperNode [2020-07-07 13:59:02,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:59:02,459 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:59:02,460 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:59:02,460 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:59:02,470 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:02" (1/1) ... [2020-07-07 13:59:02,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:02" (1/1) ... [2020-07-07 13:59:02,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:02" (1/1) ... [2020-07-07 13:59:02,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:02" (1/1) ... [2020-07-07 13:59:02,567 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:02" (1/1) ... [2020-07-07 13:59:02,572 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:02" (1/1) ... [2020-07-07 13:59:02,573 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:02" (1/1) ... [2020-07-07 13:59:02,581 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:59:02,582 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:59:02,582 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:59:02,582 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:59:02,584 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:02" (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 [2020-07-07 13:59:02,649 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:59:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:59:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:59:02,650 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:59:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:59:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:59:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:59:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:59:02,650 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:59:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-07 13:59:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:59:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:59:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:59:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:59:02,651 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:59:02,898 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:59:02,899 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:59:02,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:59:02 BoogieIcfgContainer [2020-07-07 13:59:02,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:59:02,913 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:59:02,913 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:59:02,916 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:59:02,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:59:02" (1/3) ... [2020-07-07 13:59:02,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1857a262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:59:02, skipping insertion in model container [2020-07-07 13:59:02,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:59:02" (2/3) ... [2020-07-07 13:59:02,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1857a262 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:59:02, skipping insertion in model container [2020-07-07 13:59:02,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:59:02" (3/3) ... [2020-07-07 13:59:02,921 INFO L109 eAbstractionObserver]: Analyzing ICFG terminator_01.c [2020-07-07 13:59:02,933 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:59:02,949 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:59:02,959 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:59:02,980 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:59:02,980 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:59:02,981 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:59:02,981 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:59:02,981 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:59:02,981 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:59:02,981 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:59:02,981 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:59:02,997 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-07-07 13:59:03,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 13:59:03,006 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:03,007 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:03,008 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:03,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:03,013 INFO L82 PathProgramCache]: Analyzing trace with hash 2009717658, now seen corresponding path program 1 times [2020-07-07 13:59:03,021 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:03,021 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1891394465] [2020-07-07 13:59:03,022 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:59:03,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:59:03,253 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:03,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1891394465] [2020-07-07 13:59:03,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:59:03,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:59:03,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358929251] [2020-07-07 13:59:03,264 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:59:03,264 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:59:03,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:59:03,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:59:03,283 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2020-07-07 13:59:03,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:59:03,396 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2020-07-07 13:59:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:59:03,398 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-07 13:59:03,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:59:03,407 INFO L225 Difference]: With dead ends: 49 [2020-07-07 13:59:03,408 INFO L226 Difference]: Without dead ends: 26 [2020-07-07 13:59:03,411 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 [2020-07-07 13:59:03,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-07-07 13:59:03,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-07-07 13:59:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-07 13:59:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-07-07 13:59:03,459 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 17 [2020-07-07 13:59:03,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:59:03,460 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-07-07 13:59:03,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:59:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-07 13:59:03,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 13:59:03,461 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:59:03,462 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:59:03,462 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:59:03,463 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:59:03,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:59:03,463 INFO L82 PathProgramCache]: Analyzing trace with hash -1896871379, now seen corresponding path program 1 times [2020-07-07 13:59:03,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:59:03,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926125662] [2020-07-07 13:59:03,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:59:03,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:59:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:59:03,537 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:59:03,538 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:59:03,538 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:59:03,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:59:03,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:59:03 BoogieIcfgContainer [2020-07-07 13:59:03,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:59:03,563 INFO L168 Benchmark]: Toolchain (without parser) took 1349.27 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 104.7 MB in the beginning and 136.8 MB in the end (delta: -32.1 MB). Peak memory consumption was 32.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:03,564 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 13:59:03,565 INFO L168 Benchmark]: CACSL2BoogieTranslator took 246.02 ms. Allocated memory is still 139.5 MB. Free memory was 104.3 MB in the beginning and 94.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:03,566 INFO L168 Benchmark]: Boogie Preprocessor took 121.79 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 94.6 MB in the beginning and 182.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:03,567 INFO L168 Benchmark]: RCFGBuilder took 321.78 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 168.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:03,569 INFO L168 Benchmark]: TraceAbstraction took 646.19 ms. Allocated memory is still 204.5 MB. Free memory was 167.8 MB in the beginning and 136.8 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:03,573 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 246.02 ms. Allocated memory is still 139.5 MB. Free memory was 104.3 MB in the beginning and 94.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.79 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 94.6 MB in the beginning and 182.8 MB in the end (delta: -88.1 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 321.78 ms. Allocated memory is still 204.5 MB. Free memory was 182.8 MB in the beginning and 168.5 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 646.19 ms. Allocated memory is still 204.5 MB. Free memory was 167.8 MB in the beginning and 136.8 MB in the end (delta: 31.0 MB). Peak memory consumption was 31.0 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: [L13] int x=__VERIFIER_nondet_int(); [L13] int x=__VERIFIER_nondet_int(); [L14] int *p = &x; [L16] EXPR \read(x) [L16] COND FALSE !(x<100) [L19] CALL __VERIFIER_assert(0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 34 SDtfs, 5 SDslu, 5 SDs, 0 SdLazy, 23 SolverSat, 2 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=35occurred 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: 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...