/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/array-fpi/s1iff.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 17:44:05,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 17:44:05,873 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 17:44:05,919 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 17:44:05,919 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 17:44:05,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 17:44:05,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 17:44:05,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 17:44:05,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 17:44:05,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 17:44:05,944 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 17:44:05,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 17:44:05,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 17:44:05,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 17:44:05,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 17:44:05,953 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 17:44:05,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 17:44:05,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 17:44:05,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 17:44:05,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 17:44:05,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 17:44:05,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 17:44:05,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 17:44:05,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 17:44:05,975 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-04 17:44:05,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 17:44:05,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 17:44:05,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 17:44:05,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 17:44:06,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 17:44:06,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 17:44:06,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 17:44:06,015 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 17:44:06,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 17:44:06,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 17:44:06,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 17:44:06,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 17:44:06,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 17:44:06,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 17:44:06,017 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 17:44:06,018 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 17:44:06,018 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 17:44:06,018 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 17:44:06,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 17:44:06,019 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 17:44:06,019 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 17:44:06,019 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 17:44:06,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 17:44:06,020 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 17:44:06,020 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 17:44:06,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 17:44:06,020 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 17:44:06,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 17:44:06,495 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 17:44:06,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 17:44:06,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 17:44:06,502 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 17:44:06,503 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-04 17:44:06,593 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af5c5c6ad/a5e3242286d54e7dab7d037454910264/FLAG3a1d6dfc0 [2020-09-04 17:44:07,154 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 17:44:07,155 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s1iff.c [2020-09-04 17:44:07,164 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af5c5c6ad/a5e3242286d54e7dab7d037454910264/FLAG3a1d6dfc0 [2020-09-04 17:44:07,516 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/af5c5c6ad/a5e3242286d54e7dab7d037454910264 [2020-09-04 17:44:07,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 17:44:07,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 17:44:07,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:07,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 17:44:07,538 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 17:44:07,539 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,542 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59909fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07, skipping insertion in model container [2020-09-04 17:44:07,543 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 17:44:07,573 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 17:44:07,793 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:07,803 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 17:44:07,825 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 17:44:07,842 INFO L208 MainTranslator]: Completed translation [2020-09-04 17:44:07,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07 WrapperNode [2020-09-04 17:44:07,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 17:44:07,844 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 17:44:07,844 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 17:44:07,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 17:44:07,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,947 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,947 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,976 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... [2020-09-04 17:44:07,984 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 17:44:07,985 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 17:44:07,985 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 17:44:07,985 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 17:44:07,986 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 17:44:08,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 17:44:08,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 17:44:08,064 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 17:44:08,064 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-04 17:44:08,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 17:44:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 17:44:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 17:44:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 17:44:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-04 17:44:08,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 17:44:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 17:44:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 17:44:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 17:44:08,066 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 17:44:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 17:44:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 17:44:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 17:44:08,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 17:44:08,068 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 17:44:08,371 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 17:44:08,372 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-09-04 17:44:08,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:08 BoogieIcfgContainer [2020-09-04 17:44:08,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 17:44:08,381 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 17:44:08,381 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 17:44:08,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 17:44:08,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 05:44:07" (1/3) ... [2020-09-04 17:44:08,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78eceecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:08, skipping insertion in model container [2020-09-04 17:44:08,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 05:44:07" (2/3) ... [2020-09-04 17:44:08,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78eceecb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 05:44:08, skipping insertion in model container [2020-09-04 17:44:08,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 05:44:08" (3/3) ... [2020-09-04 17:44:08,390 INFO L109 eAbstractionObserver]: Analyzing ICFG s1iff.c [2020-09-04 17:44:08,404 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 17:44:08,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 17:44:08,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 17:44:08,471 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 17:44:08,471 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 17:44:08,471 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 17:44:08,471 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 17:44:08,472 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 17:44:08,472 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 17:44:08,472 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 17:44:08,472 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 17:44:08,493 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-04 17:44:08,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 17:44:08,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:08,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:08,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:08,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:08,514 INFO L82 PathProgramCache]: Analyzing trace with hash 171473808, now seen corresponding path program 1 times [2020-09-04 17:44:08,524 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:08,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834818114] [2020-09-04 17:44:08,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:08,592 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:08,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:08,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:44:08,807 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834818114] [2020-09-04 17:44:08,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:08,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 17:44:08,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377181058] [2020-09-04 17:44:08,822 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 17:44:08,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:08,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 17:44:08,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:08,842 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2020-09-04 17:44:09,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:09,050 INFO L93 Difference]: Finished difference Result 113 states and 126 transitions. [2020-09-04 17:44:09,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 17:44:09,052 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-09-04 17:44:09,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:09,064 INFO L225 Difference]: With dead ends: 113 [2020-09-04 17:44:09,064 INFO L226 Difference]: Without dead ends: 53 [2020-09-04 17:44:09,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 17:44:09,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-04 17:44:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-04 17:44:09,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-04 17:44:09,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2020-09-04 17:44:09,127 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 31 [2020-09-04 17:44:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:09,127 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2020-09-04 17:44:09,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 17:44:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2020-09-04 17:44:09,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-04 17:44:09,129 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:09,130 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:09,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 17:44:09,131 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:09,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:09,131 INFO L82 PathProgramCache]: Analyzing trace with hash 921692051, now seen corresponding path program 1 times [2020-09-04 17:44:09,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:09,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1951984803] [2020-09-04 17:44:09,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:09,135 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:09,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:09,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:09,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:09,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:09,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:44:09,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1951984803] [2020-09-04 17:44:09,301 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:09,301 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 17:44:09,301 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187903316] [2020-09-04 17:44:09,302 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 17:44:09,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:09,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 17:44:09,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-04 17:44:09,307 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 5 states. [2020-09-04 17:44:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:09,537 INFO L93 Difference]: Finished difference Result 99 states and 105 transitions. [2020-09-04 17:44:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 17:44:09,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2020-09-04 17:44:09,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:09,540 INFO L225 Difference]: With dead ends: 99 [2020-09-04 17:44:09,541 INFO L226 Difference]: Without dead ends: 74 [2020-09-04 17:44:09,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-04 17:44:09,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-04 17:44:09,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 55. [2020-09-04 17:44:09,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-04 17:44:09,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 57 transitions. [2020-09-04 17:44:09,559 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 57 transitions. Word has length 31 [2020-09-04 17:44:09,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:09,559 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 57 transitions. [2020-09-04 17:44:09,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 17:44:09,560 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 57 transitions. [2020-09-04 17:44:09,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 17:44:09,562 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:09,562 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:09,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 17:44:09,563 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:09,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:09,563 INFO L82 PathProgramCache]: Analyzing trace with hash -827220298, now seen corresponding path program 1 times [2020-09-04 17:44:09,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:09,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268447745] [2020-09-04 17:44:09,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:09,614 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:09,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:10,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 17:44:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:10,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-04 17:44:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 17:44:10,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 17:44:10,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268447745] [2020-09-04 17:44:10,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 17:44:10,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-09-04 17:44:10,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390516309] [2020-09-04 17:44:10,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-04 17:44:10,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 17:44:10,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-04 17:44:10,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-09-04 17:44:10,343 INFO L87 Difference]: Start difference. First operand 55 states and 57 transitions. Second operand 20 states. [2020-09-04 17:44:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 17:44:12,175 INFO L93 Difference]: Finished difference Result 107 states and 113 transitions. [2020-09-04 17:44:12,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 17:44:12,177 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-09-04 17:44:12,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 17:44:12,181 INFO L225 Difference]: With dead ends: 107 [2020-09-04 17:44:12,182 INFO L226 Difference]: Without dead ends: 101 [2020-09-04 17:44:12,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=330, Invalid=1310, Unknown=0, NotChecked=0, Total=1640 [2020-09-04 17:44:12,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-04 17:44:12,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 73. [2020-09-04 17:44:12,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-04 17:44:12,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-09-04 17:44:12,204 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 48 [2020-09-04 17:44:12,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 17:44:12,205 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-09-04 17:44:12,205 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-04 17:44:12,205 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-09-04 17:44:12,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-04 17:44:12,207 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 17:44:12,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 17:44:12,207 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 17:44:12,207 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 17:44:12,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 17:44:12,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1272927570, now seen corresponding path program 1 times [2020-09-04 17:44:12,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 17:44:12,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [528565400] [2020-09-04 17:44:12,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 17:44:12,218 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 17:44:12,235 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-09-04 17:44:12,235 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 17:44:12,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 17:44:12,286 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-04 17:44:12,286 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 05:44:12 BoogieIcfgContainer [2020-09-04 17:44:12,287 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 17:44:12,291 INFO L168 Benchmark]: Toolchain (without parser) took 4757.66 ms. Allocated memory was 140.5 MB in the beginning and 244.3 MB in the end (delta: 103.8 MB). Free memory was 104.3 MB in the beginning and 130.6 MB in the end (delta: -26.3 MB). Peak memory consumption was 77.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:12,293 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-09-04 17:44:12,294 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.37 ms. Allocated memory is still 140.5 MB. Free memory was 104.3 MB in the beginning and 93.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:12,296 INFO L168 Benchmark]: Boogie Preprocessor took 140.93 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 93.8 MB in the beginning and 181.3 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:12,297 INFO L168 Benchmark]: RCFGBuilder took 393.58 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 161.6 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:12,302 INFO L168 Benchmark]: TraceAbstraction took 3905.92 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 161.6 MB in the beginning and 130.6 MB in the end (delta: 31.0 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. [2020-09-04 17:44:12,309 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 140.5 MB. Free memory was 123.1 MB in the beginning and 122.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 309.37 ms. Allocated memory is still 140.5 MB. Free memory was 104.3 MB in the beginning and 93.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.93 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 93.8 MB in the beginning and 181.3 MB in the end (delta: -87.5 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.58 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 161.6 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3905.92 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 161.6 MB in the beginning and 130.6 MB in the end (delta: 31.0 MB). Peak memory consumption was 71.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i