/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/ms2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:44:43,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:44:43,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:44:43,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:44:43,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:44:43,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:44:43,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:44:43,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:44:43,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:44:43,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:44:43,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:44:43,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:44:43,081 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:44:43,086 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:44:43,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:44:43,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:44:43,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:44:43,097 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:44:43,099 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:44:43,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:44:43,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:44:43,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:44:43,115 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:44:43,116 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:44:43,121 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:44:43,121 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:44:43,122 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:44:43,126 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:44:43,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:44:43,129 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:44:43,129 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:44:43,130 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:44:43,131 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:44:43,132 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:44:43,133 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:44:43,133 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:44:43,134 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:44:43,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:44:43,135 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:44:43,136 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:44:43,138 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:44:43,139 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:44:43,162 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:44:43,162 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:44:43,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:44:43,165 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:44:43,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:44:43,165 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:44:43,165 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:44:43,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:44:43,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:44:43,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:44:43,167 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:44:43,168 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:44:43,168 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:44:43,168 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:44:43,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:44:43,169 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:44:43,169 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:44:43,169 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:44:43,170 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:44:43,170 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:44:43,170 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:44:43,170 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:44:43,170 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:44:43,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:44:43,486 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:44:43,490 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:44:43,491 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:44:43,492 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:44:43,492 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms2f.c [2020-08-22 19:44:43,576 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e401ac8bb/8b50b69db0ea4981bce91ac49b9e65a3/FLAGd4243eef4 [2020-08-22 19:44:44,126 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:44:44,126 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms2f.c [2020-08-22 19:44:44,132 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e401ac8bb/8b50b69db0ea4981bce91ac49b9e65a3/FLAGd4243eef4 [2020-08-22 19:44:44,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e401ac8bb/8b50b69db0ea4981bce91ac49b9e65a3 [2020-08-22 19:44:44,496 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:44:44,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:44:44,499 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:44:44,499 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:44:44,502 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:44:44,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:44" (1/1) ... [2020-08-22 19:44:44,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59af46a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:44, skipping insertion in model container [2020-08-22 19:44:44,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:44" (1/1) ... [2020-08-22 19:44:44,518 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:44:44,541 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:44:44,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:44:44,790 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:44:44,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:44:44,832 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:44:44,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:44 WrapperNode [2020-08-22 19:44:44,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:44:44,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:44:44,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:44:44,835 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:44:44,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:44" (1/1) ... [2020-08-22 19:44:44,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:44" (1/1) ... [2020-08-22 19:44:44,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:44" (1/1) ... [2020-08-22 19:44:44,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:44" (1/1) ... [2020-08-22 19:44:44,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:44" (1/1) ... [2020-08-22 19:44:44,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:44" (1/1) ... [2020-08-22 19:44:44,965 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:44" (1/1) ... [2020-08-22 19:44:44,967 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:44:44,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:44:44,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:44:44,968 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:44:44,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:44" (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 [2020-08-22 19:44:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:44:45,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:44:45,035 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 19:44:45,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:44:45,035 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:44:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:44:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:44:45,035 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 19:44:45,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:44:45,036 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:44:45,036 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:44:45,036 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:44:45,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 19:44:45,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:44:45,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:44:45,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:44:45,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:44:45,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:44:45,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:44:45,371 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:44:45,372 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-22 19:44:45,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:45 BoogieIcfgContainer [2020-08-22 19:44:45,378 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:44:45,379 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:44:45,380 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:44:45,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:44:45,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:44:44" (1/3) ... [2020-08-22 19:44:45,385 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fc5053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:45, skipping insertion in model container [2020-08-22 19:44:45,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:44" (2/3) ... [2020-08-22 19:44:45,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56fc5053 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:45, skipping insertion in model container [2020-08-22 19:44:45,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:45" (3/3) ... [2020-08-22 19:44:45,388 INFO L109 eAbstractionObserver]: Analyzing ICFG ms2f.c [2020-08-22 19:44:45,401 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:44:45,410 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:44:45,425 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:44:45,452 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:44:45,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:44:45,452 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:44:45,453 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:44:45,453 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:44:45,453 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:44:45,453 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:44:45,453 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:44:45,469 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-08-22 19:44:45,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 19:44:45,482 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:45,483 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] [2020-08-22 19:44:45,484 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:45,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:45,490 INFO L82 PathProgramCache]: Analyzing trace with hash -845632023, now seen corresponding path program 1 times [2020-08-22 19:44:45,497 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:45,498 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250951796] [2020-08-22 19:44:45,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:45,562 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:44:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:45,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:44:45,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:45,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 19:44:45,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:45,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:44:45,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250951796] [2020-08-22 19:44:45,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:44:45,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:44:45,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982061645] [2020-08-22 19:44:45,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:44:45,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:44:45,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:44:45,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:44:45,820 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 3 states. [2020-08-22 19:44:46,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:44:46,001 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-08-22 19:44:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:44:46,003 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-08-22 19:44:46,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:44:46,014 INFO L225 Difference]: With dead ends: 97 [2020-08-22 19:44:46,015 INFO L226 Difference]: Without dead ends: 45 [2020-08-22 19:44:46,020 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 [2020-08-22 19:44:46,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-08-22 19:44:46,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-08-22 19:44:46,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-08-22 19:44:46,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 47 transitions. [2020-08-22 19:44:46,078 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 47 transitions. Word has length 30 [2020-08-22 19:44:46,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:44:46,079 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 47 transitions. [2020-08-22 19:44:46,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:44:46,079 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 47 transitions. [2020-08-22 19:44:46,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 19:44:46,081 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:46,081 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] [2020-08-22 19:44:46,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:44:46,082 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:46,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:46,083 INFO L82 PathProgramCache]: Analyzing trace with hash 104990277, now seen corresponding path program 1 times [2020-08-22 19:44:46,084 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:46,084 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768318768] [2020-08-22 19:44:46,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:46,087 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:44:46,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:46,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:44:46,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 19:44:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:46,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:44:46,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768318768] [2020-08-22 19:44:46,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:44:46,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:44:46,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733925345] [2020-08-22 19:44:46,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:44:46,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:44:46,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:44:46,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:44:46,226 INFO L87 Difference]: Start difference. First operand 45 states and 47 transitions. Second operand 5 states. [2020-08-22 19:44:46,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:44:46,442 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2020-08-22 19:44:46,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 19:44:46,443 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-22 19:44:46,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:44:46,445 INFO L225 Difference]: With dead ends: 71 [2020-08-22 19:44:46,445 INFO L226 Difference]: Without dead ends: 53 [2020-08-22 19:44:46,448 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 [2020-08-22 19:44:46,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-22 19:44:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2020-08-22 19:44:46,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 19:44:46,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-08-22 19:44:46,465 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 30 [2020-08-22 19:44:46,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:44:46,465 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-08-22 19:44:46,465 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:44:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-08-22 19:44:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 19:44:46,467 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:46,467 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] [2020-08-22 19:44:46,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:44:46,468 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:46,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:46,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1687643347, now seen corresponding path program 1 times [2020-08-22 19:44:46,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:46,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445696875] [2020-08-22 19:44:46,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:46,507 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:44:46,508 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:293) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-22 19:44:46,516 INFO L168 Benchmark]: Toolchain (without parser) took 2016.56 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.5 MB in the beginning and 99.1 MB in the end (delta: 4.3 MB). Peak memory consumption was 67.8 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:46,517 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:44:46,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.11 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:46,519 INFO L168 Benchmark]: Boogie Preprocessor took 132.75 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.8 MB in the beginning and 182.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:46,521 INFO L168 Benchmark]: RCFGBuilder took 410.47 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 164.2 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:46,522 INFO L168 Benchmark]: TraceAbstraction took 1132.78 ms. Allocated memory is still 203.9 MB. Free memory was 163.6 MB in the beginning and 99.1 MB in the end (delta: 64.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:46,526 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 140.5 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.11 ms. Allocated memory is still 140.5 MB. Free memory was 103.2 MB in the beginning and 92.8 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.75 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 92.8 MB in the beginning and 182.0 MB in the end (delta: -89.2 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.47 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 164.2 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1132.78 ms. Allocated memory is still 203.9 MB. Free memory was 163.6 MB in the beginning and 99.1 MB in the end (delta: 64.4 MB). Peak memory consumption was 64.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...