/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/loop-lit/gcnr2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 20:24:44,565 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 20:24:44,568 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 20:24:44,580 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 20:24:44,580 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 20:24:44,582 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 20:24:44,583 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 20:24:44,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 20:24:44,587 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 20:24:44,588 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 20:24:44,589 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 20:24:44,590 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 20:24:44,590 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 20:24:44,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 20:24:44,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 20:24:44,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 20:24:44,595 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 20:24:44,596 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 20:24:44,597 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 20:24:44,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 20:24:44,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 20:24:44,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 20:24:44,604 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 20:24:44,604 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 20:24:44,607 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-10 20:24:44,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 20:24:44,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 20:24:44,617 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 20:24:44,618 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 20:24:44,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 20:24:44,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 20:24:44,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 20:24:44,629 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 20:24:44,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 20:24:44,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 20:24:44,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 20:24:44,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 20:24:44,630 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 20:24:44,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 20:24:44,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 20:24:44,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 20:24:44,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 20:24:44,631 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 20:24:44,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 20:24:44,632 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 20:24:44,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 20:24:44,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 20:24:44,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:24:44,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 20:24:44,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 20:24:44,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 20:24:44,633 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 20:24:44,920 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 20:24:44,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 20:24:44,936 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 20:24:44,938 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 20:24:44,938 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 20:24:44,939 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gcnr2008.i [2020-07-10 20:24:45,006 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0545369c6/5816ae7171b24fd5a23e431c06b6b3b8/FLAG0e8241877 [2020-07-10 20:24:45,466 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 20:24:45,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gcnr2008.i [2020-07-10 20:24:45,474 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0545369c6/5816ae7171b24fd5a23e431c06b6b3b8/FLAG0e8241877 [2020-07-10 20:24:45,826 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0545369c6/5816ae7171b24fd5a23e431c06b6b3b8 [2020-07-10 20:24:45,834 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 20:24:45,836 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 20:24:45,838 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 20:24:45,838 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 20:24:45,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 20:24:45,843 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:24:45" (1/1) ... [2020-07-10 20:24:45,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bf48b24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:24:45, skipping insertion in model container [2020-07-10 20:24:45,847 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:24:45" (1/1) ... [2020-07-10 20:24:45,855 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 20:24:45,877 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 20:24:46,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:24:46,130 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 20:24:46,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:24:46,163 INFO L208 MainTranslator]: Completed translation [2020-07-10 20:24:46,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:24:46 WrapperNode [2020-07-10 20:24:46,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 20:24:46,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 20:24:46,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 20:24:46,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 20:24:46,178 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:24:46" (1/1) ... [2020-07-10 20:24:46,178 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:24:46" (1/1) ... [2020-07-10 20:24:46,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:24:46" (1/1) ... [2020-07-10 20:24:46,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:24:46" (1/1) ... [2020-07-10 20:24:46,188 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:24:46" (1/1) ... [2020-07-10 20:24:46,195 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:24:46" (1/1) ... [2020-07-10 20:24:46,196 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:24:46" (1/1) ... [2020-07-10 20:24:46,286 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 20:24:46,287 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 20:24:46,287 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 20:24:46,287 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 20:24:46,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:24:46" (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 20:24:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 20:24:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 20:24:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-10 20:24:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 20:24:46,356 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 20:24:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 20:24:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-10 20:24:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-10 20:24:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 20:24:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-10 20:24:46,357 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 20:24:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 20:24:46,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 20:24:46,703 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 20:24:46,703 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 20:24:46,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:24:46 BoogieIcfgContainer [2020-07-10 20:24:46,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 20:24:46,709 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 20:24:46,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 20:24:46,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 20:24:46,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 08:24:45" (1/3) ... [2020-07-10 20:24:46,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743769c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:24:46, skipping insertion in model container [2020-07-10 20:24:46,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:24:46" (2/3) ... [2020-07-10 20:24:46,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743769c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:24:46, skipping insertion in model container [2020-07-10 20:24:46,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:24:46" (3/3) ... [2020-07-10 20:24:46,717 INFO L109 eAbstractionObserver]: Analyzing ICFG gcnr2008.i [2020-07-10 20:24:46,728 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 20:24:46,735 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 20:24:46,749 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 20:24:46,772 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 20:24:46,773 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 20:24:46,773 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 20:24:46,773 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 20:24:46,773 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 20:24:46,773 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 20:24:46,774 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 20:24:46,774 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 20:24:46,790 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-07-10 20:24:46,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-10 20:24:46,807 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:24:46,811 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:24:46,811 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:24:46,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:24:46,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1056406919, now seen corresponding path program 1 times [2020-07-10 20:24:46,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:24:46,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132008287] [2020-07-10 20:24:46,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:24:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:24:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:24:46,968 INFO L280 TraceCheckUtils]: 0: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-10 20:24:46,969 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {48#true} {48#true} #86#return; {48#true} is VALID [2020-07-10 20:24:46,971 INFO L263 TraceCheckUtils]: 0: Hoare triple {48#true} call ULTIMATE.init(); {48#true} is VALID [2020-07-10 20:24:46,971 INFO L280 TraceCheckUtils]: 1: Hoare triple {48#true} assume true; {48#true} is VALID [2020-07-10 20:24:46,972 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {48#true} {48#true} #86#return; {48#true} is VALID [2020-07-10 20:24:46,972 INFO L263 TraceCheckUtils]: 3: Hoare triple {48#true} call #t~ret3 := main(); {48#true} is VALID [2020-07-10 20:24:46,972 INFO L280 TraceCheckUtils]: 4: Hoare triple {48#true} havoc ~x~0; {48#true} is VALID [2020-07-10 20:24:46,973 INFO L280 TraceCheckUtils]: 5: Hoare triple {48#true} havoc ~y~0; {48#true} is VALID [2020-07-10 20:24:46,973 INFO L280 TraceCheckUtils]: 6: Hoare triple {48#true} havoc ~z~0; {48#true} is VALID [2020-07-10 20:24:46,973 INFO L280 TraceCheckUtils]: 7: Hoare triple {48#true} havoc ~w~0; {48#true} is VALID [2020-07-10 20:24:46,974 INFO L280 TraceCheckUtils]: 8: Hoare triple {48#true} ~w~0 := 0; {48#true} is VALID [2020-07-10 20:24:46,974 INFO L280 TraceCheckUtils]: 9: Hoare triple {48#true} ~z~0 := ~w~0; {48#true} is VALID [2020-07-10 20:24:46,975 INFO L280 TraceCheckUtils]: 10: Hoare triple {48#true} ~y~0 := ~z~0; {48#true} is VALID [2020-07-10 20:24:46,975 INFO L280 TraceCheckUtils]: 11: Hoare triple {48#true} ~x~0 := ~y~0; {48#true} is VALID [2020-07-10 20:24:46,981 INFO L280 TraceCheckUtils]: 12: Hoare triple {48#true} assume !true; {49#false} is VALID [2020-07-10 20:24:46,981 INFO L263 TraceCheckUtils]: 13: Hoare triple {49#false} call __VERIFIER_assert((if ~x~0 >= 4 && ~y~0 <= 2 then 1 else 0)); {49#false} is VALID [2020-07-10 20:24:46,982 INFO L280 TraceCheckUtils]: 14: Hoare triple {49#false} ~cond := #in~cond; {49#false} is VALID [2020-07-10 20:24:46,982 INFO L280 TraceCheckUtils]: 15: Hoare triple {49#false} assume 0 == ~cond; {49#false} is VALID [2020-07-10 20:24:46,983 INFO L280 TraceCheckUtils]: 16: Hoare triple {49#false} assume !false; {49#false} is VALID [2020-07-10 20:24:46,986 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 20:24:46,987 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:24:46,989 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132008287] [2020-07-10 20:24:46,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:24:46,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 20:24:46,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387863949] [2020-07-10 20:24:47,000 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-07-10 20:24:47,003 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:24:47,006 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 20:24:47,087 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:24:47,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 20:24:47,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:24:47,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 20:24:47,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 20:24:47,102 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2020-07-10 20:24:47,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:24:47,257 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2020-07-10 20:24:47,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 20:24:47,258 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2020-07-10 20:24:47,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:24:47,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:24:47,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2020-07-10 20:24:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:24:47,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 64 transitions. [2020-07-10 20:24:47,277 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 64 transitions. [2020-07-10 20:24:47,381 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 64 edges. 64 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:24:47,394 INFO L225 Difference]: With dead ends: 57 [2020-07-10 20:24:47,394 INFO L226 Difference]: Without dead ends: 38 [2020-07-10 20:24:47,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 20:24:47,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-10 20:24:47,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-07-10 20:24:47,458 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:24:47,459 INFO L82 GeneralOperation]: Start isEquivalent. First operand 38 states. Second operand 38 states. [2020-07-10 20:24:47,459 INFO L74 IsIncluded]: Start isIncluded. First operand 38 states. Second operand 38 states. [2020-07-10 20:24:47,460 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 38 states. [2020-07-10 20:24:47,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:24:47,466 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-07-10 20:24:47,466 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-07-10 20:24:47,467 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:24:47,467 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:24:47,468 INFO L74 IsIncluded]: Start isIncluded. First operand 38 states. Second operand 38 states. [2020-07-10 20:24:47,468 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 38 states. [2020-07-10 20:24:47,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:24:47,474 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2020-07-10 20:24:47,474 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-07-10 20:24:47,475 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:24:47,475 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:24:47,476 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:24:47,476 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:24:47,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-10 20:24:47,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-07-10 20:24:47,482 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 17 [2020-07-10 20:24:47,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:24:47,483 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-07-10 20:24:47,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 20:24:47,483 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 38 states and 42 transitions. [2020-07-10 20:24:47,541 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 42 edges. 42 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:24:47,542 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-07-10 20:24:47,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-10 20:24:47,543 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:24:47,543 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:24:47,544 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 20:24:47,544 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:24:47,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:24:47,545 INFO L82 PathProgramCache]: Analyzing trace with hash -588270500, now seen corresponding path program 1 times [2020-07-10 20:24:47,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:24:47,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [51976875] [2020-07-10 20:24:47,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:24:47,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 20:24:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 20:24:47,602 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:24:47,602 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-10 20:24:47,602 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 20:24:47,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 20:24:47,616 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 20:24:47,616 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 20:24:47,616 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 20:24:47,616 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2020-07-10 20:24:47,616 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 20:24:47,617 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-10 20:24:47,617 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 20:24:47,617 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 20:24:47,617 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 20:24:47,617 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 20:24:47,618 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 20:24:47,618 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-10 20:24:47,618 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-10 20:24:47,618 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2020-07-10 20:24:47,618 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 20:24:47,618 WARN L170 areAnnotationChecker]: L4-1 has no Hoare annotation [2020-07-10 20:24:47,619 WARN L170 areAnnotationChecker]: L4-3 has no Hoare annotation [2020-07-10 20:24:47,619 WARN L170 areAnnotationChecker]: L14-1 has no Hoare annotation [2020-07-10 20:24:47,619 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-10 20:24:47,619 WARN L170 areAnnotationChecker]: L8 has no Hoare annotation [2020-07-10 20:24:47,619 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2020-07-10 20:24:47,620 WARN L170 areAnnotationChecker]: L14-2 has no Hoare annotation [2020-07-10 20:24:47,620 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 20:24:47,620 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-10 20:24:47,620 WARN L170 areAnnotationChecker]: L31 has no Hoare annotation [2020-07-10 20:24:47,620 WARN L170 areAnnotationChecker]: L15-1 has no Hoare annotation [2020-07-10 20:24:47,620 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 20:24:47,621 WARN L170 areAnnotationChecker]: L15-2 has no Hoare annotation [2020-07-10 20:24:47,621 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 20:24:47,621 WARN L170 areAnnotationChecker]: L15-3 has no Hoare annotation [2020-07-10 20:24:47,621 WARN L170 areAnnotationChecker]: L16-5 has no Hoare annotation [2020-07-10 20:24:47,621 WARN L170 areAnnotationChecker]: L16-5 has no Hoare annotation [2020-07-10 20:24:47,621 WARN L170 areAnnotationChecker]: L16-6 has no Hoare annotation [2020-07-10 20:24:47,622 WARN L170 areAnnotationChecker]: L16-6 has no Hoare annotation [2020-07-10 20:24:47,622 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-10 20:24:47,622 WARN L170 areAnnotationChecker]: L16-1 has no Hoare annotation [2020-07-10 20:24:47,622 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2020-07-10 20:24:47,622 WARN L170 areAnnotationChecker]: L16-4 has no Hoare annotation [2020-07-10 20:24:47,622 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2020-07-10 20:24:47,623 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-10 20:24:47,623 WARN L170 areAnnotationChecker]: L17-1 has no Hoare annotation [2020-07-10 20:24:47,623 WARN L170 areAnnotationChecker]: L17-2 has no Hoare annotation [2020-07-10 20:24:47,623 WARN L170 areAnnotationChecker]: L17-4 has no Hoare annotation [2020-07-10 20:24:47,623 WARN L170 areAnnotationChecker]: L18 has no Hoare annotation [2020-07-10 20:24:47,624 WARN L170 areAnnotationChecker]: L20 has no Hoare annotation [2020-07-10 20:24:47,624 WARN L170 areAnnotationChecker]: L19 has no Hoare annotation [2020-07-10 20:24:47,624 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-10 20:24:47,624 WARN L170 areAnnotationChecker]: L20-1 has no Hoare annotation [2020-07-10 20:24:47,624 WARN L170 areAnnotationChecker]: L25-2 has no Hoare annotation [2020-07-10 20:24:47,624 WARN L170 areAnnotationChecker]: L20-2 has no Hoare annotation [2020-07-10 20:24:47,625 WARN L170 areAnnotationChecker]: L20-3 has no Hoare annotation [2020-07-10 20:24:47,625 WARN L170 areAnnotationChecker]: L29 has no Hoare annotation [2020-07-10 20:24:47,625 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-10 20:24:47,625 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-10 20:24:47,625 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-10 20:24:47,625 WARN L170 areAnnotationChecker]: L25 has no Hoare annotation [2020-07-10 20:24:47,626 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-10 20:24:47,626 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-10 20:24:47,626 WARN L170 areAnnotationChecker]: L23 has no Hoare annotation [2020-07-10 20:24:47,626 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 20:24:47,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 08:24:47 BoogieIcfgContainer [2020-07-10 20:24:47,630 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 20:24:47,633 INFO L168 Benchmark]: Toolchain (without parser) took 1796.67 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 101.5 MB in the beginning and 88.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 76.8 MB. Max. memory is 7.1 GB. [2020-07-10 20:24:47,634 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 137.4 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-10 20:24:47,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 325.97 ms. Allocated memory is still 137.4 MB. Free memory was 101.5 MB in the beginning and 91.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-07-10 20:24:47,636 INFO L168 Benchmark]: Boogie Preprocessor took 122.04 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 91.0 MB in the beginning and 179.8 MB in the end (delta: -88.8 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-10 20:24:47,637 INFO L168 Benchmark]: RCFGBuilder took 421.21 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 157.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. [2020-07-10 20:24:47,638 INFO L168 Benchmark]: TraceAbstraction took 920.76 ms. Allocated memory is still 201.3 MB. Free memory was 157.5 MB in the beginning and 88.8 MB in the end (delta: 68.7 MB). Peak memory consumption was 68.7 MB. Max. memory is 7.1 GB. [2020-07-10 20:24:47,641 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 0.26 ms. Allocated memory is still 137.4 MB. Free memory is still 119.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 325.97 ms. Allocated memory is still 137.4 MB. Free memory was 101.5 MB in the beginning and 91.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.04 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 91.0 MB in the beginning and 179.8 MB in the end (delta: -88.8 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 421.21 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 157.5 MB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 920.76 ms. Allocated memory is still 201.3 MB. Free memory was 157.5 MB in the beginning and 88.8 MB in the end (delta: 68.7 MB). Peak memory consumption was 68.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int x,y,z,w; [L15] EXPR w = 0 [L15] EXPR z = w = 0 [L15] EXPR y = z = w = 0 [L15] x = y = z = w = 0 [L16] COND FALSE !(__VERIFIER_nondet_int() && y < 10000) [L31] CALL __VERIFIER_assert(x >= 4 && y <= 2) [L7] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 50 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: 49 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred 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...