/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/nec11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-8fc6572 [2020-07-10 20:21:55,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-10 20:21:55,778 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-10 20:21:55,796 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-10 20:21:55,796 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-10 20:21:55,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-10 20:21:55,799 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-10 20:21:55,801 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-10 20:21:55,803 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-10 20:21:55,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-10 20:21:55,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-10 20:21:55,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-10 20:21:55,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-10 20:21:55,808 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-10 20:21:55,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-10 20:21:55,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-10 20:21:55,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-10 20:21:55,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-10 20:21:55,814 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-10 20:21:55,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-10 20:21:55,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-10 20:21:55,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-10 20:21:55,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-10 20:21:55,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-10 20:21:55,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-10 20:21:55,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-10 20:21:55,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-10 20:21:55,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-10 20:21:55,826 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-10 20:21:55,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-10 20:21:55,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-10 20:21:55,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-10 20:21:55,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-10 20:21:55,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-10 20:21:55,831 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-10 20:21:55,831 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-10 20:21:55,832 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-10 20:21:55,832 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-10 20:21:55,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-10 20:21:55,833 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-10 20:21:55,834 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-10 20:21:55,835 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 20:21:55,845 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-10 20:21:55,845 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-10 20:21:55,847 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-10 20:21:55,847 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-10 20:21:55,847 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-10 20:21:55,847 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-10 20:21:55,847 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-10 20:21:55,848 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-10 20:21:55,848 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-10 20:21:55,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-10 20:21:55,848 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-10 20:21:55,848 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-10 20:21:55,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-10 20:21:55,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-10 20:21:55,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-10 20:21:55,849 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-10 20:21:55,849 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-10 20:21:55,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-10 20:21:55,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-10 20:21:55,850 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-10 20:21:55,850 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-10 20:21:55,850 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-10 20:21:55,851 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-10 20:21:56,134 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-10 20:21:56,145 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-10 20:21:56,149 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-10 20:21:56,151 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-10 20:21:56,151 INFO L275 PluginConnector]: CDTParser initialized [2020-07-10 20:21:56,152 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec11.c [2020-07-10 20:21:56,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31fcf8e6/22755cd6ac9242f695998e6918da4c31/FLAG807c3a1f4 [2020-07-10 20:21:56,752 INFO L306 CDTParser]: Found 1 translation units. [2020-07-10 20:21:56,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c [2020-07-10 20:21:56,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31fcf8e6/22755cd6ac9242f695998e6918da4c31/FLAG807c3a1f4 [2020-07-10 20:21:57,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31fcf8e6/22755cd6ac9242f695998e6918da4c31 [2020-07-10 20:21:57,096 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-10 20:21:57,098 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-10 20:21:57,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-10 20:21:57,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-10 20:21:57,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-10 20:21:57,105 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:21:57" (1/1) ... [2020-07-10 20:21:57,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5952304e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:21:57, skipping insertion in model container [2020-07-10 20:21:57,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.07 08:21:57" (1/1) ... [2020-07-10 20:21:57,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-10 20:21:57,138 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-10 20:21:57,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:21:57,321 INFO L203 MainTranslator]: Completed pre-run [2020-07-10 20:21:57,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-10 20:21:57,354 INFO L208 MainTranslator]: Completed translation [2020-07-10 20:21:57,354 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:21:57 WrapperNode [2020-07-10 20:21:57,355 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-10 20:21:57,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-10 20:21:57,356 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-10 20:21:57,356 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-10 20:21:57,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:21:57" (1/1) ... [2020-07-10 20:21:57,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:21:57" (1/1) ... [2020-07-10 20:21:57,376 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:21:57" (1/1) ... [2020-07-10 20:21:57,376 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:21:57" (1/1) ... [2020-07-10 20:21:57,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:21:57" (1/1) ... [2020-07-10 20:21:57,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:21:57" (1/1) ... [2020-07-10 20:21:57,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:21:57" (1/1) ... [2020-07-10 20:21:57,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-10 20:21:57,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-10 20:21:57,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-10 20:21:57,469 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-10 20:21:57,470 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:21:57" (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 20:21:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-10 20:21:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-10 20:21:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-10 20:21:57,535 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-10 20:21:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-10 20:21:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-10 20:21:57,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-10 20:21:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-10 20:21:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-10 20:21:57,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-10 20:21:57,776 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-10 20:21:57,777 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-10 20:21:57,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:21:57 BoogieIcfgContainer [2020-07-10 20:21:57,781 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-10 20:21:57,783 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-10 20:21:57,783 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-10 20:21:57,786 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-10 20:21:57,787 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.07 08:21:57" (1/3) ... [2020-07-10 20:21:57,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567e4cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:21:57, skipping insertion in model container [2020-07-10 20:21:57,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.07 08:21:57" (2/3) ... [2020-07-10 20:21:57,788 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@567e4cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.07 08:21:57, skipping insertion in model container [2020-07-10 20:21:57,788 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.07 08:21:57" (3/3) ... [2020-07-10 20:21:57,790 INFO L109 eAbstractionObserver]: Analyzing ICFG nec11.c [2020-07-10 20:21:57,803 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-10 20:21:57,812 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-10 20:21:57,832 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-10 20:21:57,861 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-10 20:21:57,862 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-10 20:21:57,862 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-10 20:21:57,862 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-10 20:21:57,862 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-10 20:21:57,863 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-10 20:21:57,863 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-10 20:21:57,863 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-10 20:21:57,881 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-10 20:21:57,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-10 20:21:57,908 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:21:57,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:21:57,913 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:21:57,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:21:57,926 INFO L82 PathProgramCache]: Analyzing trace with hash -341317185, now seen corresponding path program 1 times [2020-07-10 20:21:57,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:21:57,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [651155403] [2020-07-10 20:21:57,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:21:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:21:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-10 20:21:58,080 INFO L280 TraceCheckUtils]: 0: Hoare triple {31#true} assume true; {31#true} is VALID [2020-07-10 20:21:58,081 INFO L275 TraceCheckUtils]: 1: Hoare quadruple {31#true} {31#true} #47#return; {31#true} is VALID [2020-07-10 20:21:58,083 INFO L263 TraceCheckUtils]: 0: Hoare triple {31#true} call ULTIMATE.init(); {31#true} is VALID [2020-07-10 20:21:58,083 INFO L280 TraceCheckUtils]: 1: Hoare triple {31#true} assume true; {31#true} is VALID [2020-07-10 20:21:58,084 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {31#true} {31#true} #47#return; {31#true} is VALID [2020-07-10 20:21:58,084 INFO L263 TraceCheckUtils]: 3: Hoare triple {31#true} call #t~ret2 := main(); {31#true} is VALID [2020-07-10 20:21:58,085 INFO L280 TraceCheckUtils]: 4: Hoare triple {31#true} havoc ~a~0; {31#true} is VALID [2020-07-10 20:21:58,085 INFO L280 TraceCheckUtils]: 5: Hoare triple {31#true} ~len~0 := 0; {31#true} is VALID [2020-07-10 20:21:58,086 INFO L280 TraceCheckUtils]: 6: Hoare triple {31#true} ~c~0 := #t~nondet0; {31#true} is VALID [2020-07-10 20:21:58,086 INFO L280 TraceCheckUtils]: 7: Hoare triple {31#true} havoc #t~nondet0; {31#true} is VALID [2020-07-10 20:21:58,087 INFO L280 TraceCheckUtils]: 8: Hoare triple {31#true} havoc ~i~0; {31#true} is VALID [2020-07-10 20:21:58,089 INFO L280 TraceCheckUtils]: 9: Hoare triple {31#true} assume !true; {32#false} is VALID [2020-07-10 20:21:58,089 INFO L263 TraceCheckUtils]: 10: Hoare triple {32#false} call __VERIFIER_assert((if 5 == ~len~0 then 1 else 0)); {32#false} is VALID [2020-07-10 20:21:58,090 INFO L280 TraceCheckUtils]: 11: Hoare triple {32#false} ~cond := #in~cond; {32#false} is VALID [2020-07-10 20:21:58,090 INFO L280 TraceCheckUtils]: 12: Hoare triple {32#false} assume 0 == ~cond; {32#false} is VALID [2020-07-10 20:21:58,090 INFO L280 TraceCheckUtils]: 13: Hoare triple {32#false} assume !false; {32#false} is VALID [2020-07-10 20:21:58,092 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 20:21:58,092 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:21:58,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [651155403] [2020-07-10 20:21:58,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-10 20:21:58,097 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-10 20:21:58,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968343301] [2020-07-10 20:21:58,104 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-10 20:21:58,107 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-10 20:21:58,112 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states. [2020-07-10 20:21:58,149 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:21:58,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-10 20:21:58,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-10 20:21:58,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-10 20:21:58,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-10 20:21:58,162 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-07-10 20:21:58,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:21:58,263 INFO L93 Difference]: Finished difference Result 40 states and 44 transitions. [2020-07-10 20:21:58,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-10 20:21:58,264 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 14 [2020-07-10 20:21:58,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-10 20:21:58,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:21:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2020-07-10 20:21:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-07-10 20:21:58,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 44 transitions. [2020-07-10 20:21:58,291 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 2 states and 44 transitions. [2020-07-10 20:21:58,372 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 44 edges. 44 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:21:58,384 INFO L225 Difference]: With dead ends: 40 [2020-07-10 20:21:58,385 INFO L226 Difference]: Without dead ends: 21 [2020-07-10 20:21:58,389 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 20:21:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-10 20:21:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-10 20:21:58,442 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-10 20:21:58,442 INFO L82 GeneralOperation]: Start isEquivalent. First operand 21 states. Second operand 21 states. [2020-07-10 20:21:58,443 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-10 20:21:58,443 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-10 20:21:58,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:21:58,448 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-07-10 20:21:58,448 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-10 20:21:58,449 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:21:58,449 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:21:58,449 INFO L74 IsIncluded]: Start isIncluded. First operand 21 states. Second operand 21 states. [2020-07-10 20:21:58,450 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 21 states. [2020-07-10 20:21:58,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-10 20:21:58,454 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2020-07-10 20:21:58,454 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-10 20:21:58,454 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-10 20:21:58,455 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-10 20:21:58,455 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-10 20:21:58,455 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-10 20:21:58,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-10 20:21:58,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-07-10 20:21:58,460 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2020-07-10 20:21:58,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-10 20:21:58,460 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-07-10 20:21:58,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-10 20:21:58,461 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 21 states and 22 transitions. [2020-07-10 20:21:58,495 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-10 20:21:58,495 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-07-10 20:21:58,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-10 20:21:58,496 INFO L414 BasicCegarLoop]: Found error trace [2020-07-10 20:21:58,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-10 20:21:58,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-10 20:21:58,497 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-10 20:21:58,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-10 20:21:58,498 INFO L82 PathProgramCache]: Analyzing trace with hash -355170000, now seen corresponding path program 1 times [2020-07-10 20:21:58,498 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-10 20:21:58,499 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1958113290] [2020-07-10 20:21:58,499 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-10 20:21:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 20:21:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-10 20:21:58,555 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-10 20:21:58,555 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-10 20:21:58,555 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-10 20:21:58,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-10 20:21:58,571 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-10 20:21:58,571 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 20:21:58,571 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-10 20:21:58,571 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-10 20:21:58,572 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2020-07-10 20:21:58,572 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-10 20:21:58,572 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 20:21:58,572 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-10 20:21:58,572 WARN L170 areAnnotationChecker]: L14 has no Hoare annotation [2020-07-10 20:21:58,572 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 20:21:58,573 WARN L170 areAnnotationChecker]: L4 has no Hoare annotation [2020-07-10 20:21:58,573 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-10 20:21:58,573 WARN L170 areAnnotationChecker]: L15 has no Hoare annotation [2020-07-10 20:21:58,573 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 20:21:58,573 WARN L170 areAnnotationChecker]: L5 has no Hoare annotation [2020-07-10 20:21:58,573 WARN L170 areAnnotationChecker]: L4-2 has no Hoare annotation [2020-07-10 20:21:58,574 WARN L170 areAnnotationChecker]: L15-1 has no Hoare annotation [2020-07-10 20:21:58,574 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2020-07-10 20:21:58,574 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2020-07-10 20:21:58,574 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2020-07-10 20:21:58,574 WARN L170 areAnnotationChecker]: L19-2 has no Hoare annotation [2020-07-10 20:21:58,574 WARN L170 areAnnotationChecker]: L19-2 has no Hoare annotation [2020-07-10 20:21:58,574 WARN L170 areAnnotationChecker]: L19-2 has no Hoare annotation [2020-07-10 20:21:58,575 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-10 20:21:58,575 WARN L170 areAnnotationChecker]: L19-3 has no Hoare annotation [2020-07-10 20:21:58,575 WARN L170 areAnnotationChecker]: L19-3 has no Hoare annotation [2020-07-10 20:21:58,575 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-10 20:21:58,575 WARN L170 areAnnotationChecker]: L21 has no Hoare annotation [2020-07-10 20:21:58,575 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-10 20:21:58,575 WARN L170 areAnnotationChecker]: L22 has no Hoare annotation [2020-07-10 20:21:58,576 WARN L170 areAnnotationChecker]: L21-2 has no Hoare annotation [2020-07-10 20:21:58,576 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2020-07-10 20:21:58,576 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2020-07-10 20:21:58,576 WARN L170 areAnnotationChecker]: L26-2 has no Hoare annotation [2020-07-10 20:21:58,576 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 20:21:58,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.07 08:21:58 BoogieIcfgContainer [2020-07-10 20:21:58,580 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-10 20:21:58,584 INFO L168 Benchmark]: Toolchain (without parser) took 1484.80 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 99.7 MB in the beginning and 109.2 MB in the end (delta: -9.5 MB). Peak memory consumption was 55.0 MB. Max. memory is 7.1 GB. [2020-07-10 20:21:58,585 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-10 20:21:58,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.83 ms. Allocated memory is still 134.7 MB. Free memory was 99.5 MB in the beginning and 89.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-10 20:21:58,587 INFO L168 Benchmark]: Boogie Preprocessor took 113.07 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 89.9 MB in the beginning and 179.3 MB in the end (delta: -89.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-10 20:21:58,588 INFO L168 Benchmark]: RCFGBuilder took 312.71 ms. Allocated memory is still 199.2 MB. Free memory was 179.3 MB in the beginning and 162.8 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-07-10 20:21:58,588 INFO L168 Benchmark]: TraceAbstraction took 797.27 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 109.2 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2020-07-10 20:21:58,592 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 0.23 ms. Allocated memory is still 134.7 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 255.83 ms. Allocated memory is still 134.7 MB. Free memory was 99.5 MB in the beginning and 89.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.07 ms. Allocated memory was 134.7 MB in the beginning and 199.2 MB in the end (delta: 64.5 MB). Free memory was 89.9 MB in the beginning and 179.3 MB in the end (delta: -89.5 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 312.71 ms. Allocated memory is still 199.2 MB. Free memory was 179.3 MB in the beginning and 162.8 MB in the end (delta: 16.5 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 797.27 ms. Allocated memory is still 199.2 MB. Free memory was 162.1 MB in the beginning and 109.2 MB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 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 a[5]; [L14] int len=0; [L15] _Bool c=__VERIFIER_nondet_bool(); [L16] int i; [L19] COND FALSE !(\read(c)) [L28] CALL __VERIFIER_assert(len==5) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 29 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=28occurred 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...