/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/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:44:48,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:44:48,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:44:48,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:44:48,940 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:44:48,951 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:44:48,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:44:48,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:44:48,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:44:48,962 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:44:48,963 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:44:48,966 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:44:48,966 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:44:48,970 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:44:48,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:44:48,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:44:48,975 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:44:48,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:44:48,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:44:48,984 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:44:48,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:44:48,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:44:48,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:44:48,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:44:48,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:44:48,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:44:48,995 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:44:48,998 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:44:48,999 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:44:49,000 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:44:49,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:44:49,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:44:49,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:44:49,002 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:44:49,003 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:44:49,003 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:44:49,004 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:44:49,004 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:44:49,005 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:44:49,005 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:44:49,007 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:44:49,007 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 19:44:49,024 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:44:49,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:44:49,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:44:49,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:44:49,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:44:49,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:44:49,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:44:49,029 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:44:49,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:44:49,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:44:49,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:44:49,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:44:49,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:44:49,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:44:49,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:44:49,032 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:44:49,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:44:49,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:44:49,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:44:49,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:44:49,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:44:49,033 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:44:49,033 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:44:49,309 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:44:49,319 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:44:49,323 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:44:49,324 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:44:49,325 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:44:49,325 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2020-08-22 19:44:49,404 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6361075e/544b7d4d4c08470da190d1d344a5b329/FLAG387546b03 [2020-08-22 19:44:49,897 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:44:49,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1f.c [2020-08-22 19:44:49,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6361075e/544b7d4d4c08470da190d1d344a5b329/FLAG387546b03 [2020-08-22 19:44:50,240 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6361075e/544b7d4d4c08470da190d1d344a5b329 [2020-08-22 19:44:50,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:44:50,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:44:50,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:44:50,256 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:44:50,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:44:50,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:50" (1/1) ... [2020-08-22 19:44:50,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46be8117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:50, skipping insertion in model container [2020-08-22 19:44:50,265 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:50" (1/1) ... [2020-08-22 19:44:50,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:44:50,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:44:50,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:44:50,515 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:44:50,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:44:50,559 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:44:50,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:50 WrapperNode [2020-08-22 19:44:50,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:44:50,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:44:50,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:44:50,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:44:50,665 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:50" (1/1) ... [2020-08-22 19:44:50,665 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:50" (1/1) ... [2020-08-22 19:44:50,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:50" (1/1) ... [2020-08-22 19:44:50,674 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:50" (1/1) ... [2020-08-22 19:44:50,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:50" (1/1) ... [2020-08-22 19:44:50,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:50" (1/1) ... [2020-08-22 19:44:50,694 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:50" (1/1) ... [2020-08-22 19:44:50,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:44:50,700 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:44:50,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:44:50,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:44:50,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:50" (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 19:44:50,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:44:50,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:44:50,765 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 19:44:50,765 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:44:50,765 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:44:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:44:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:44:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 19:44:50,765 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:44:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:44:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:44:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:44:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 19:44:50,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:44:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:44:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:44:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:44:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:44:50,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:44:51,085 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:44:51,086 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 19:44:51,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:51 BoogieIcfgContainer [2020-08-22 19:44:51,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:44:51,096 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:44:51,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:44:51,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:44:51,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:44:50" (1/3) ... [2020-08-22 19:44:51,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7373431c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:51, skipping insertion in model container [2020-08-22 19:44:51,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:50" (2/3) ... [2020-08-22 19:44:51,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7373431c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:51, skipping insertion in model container [2020-08-22 19:44:51,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:51" (3/3) ... [2020-08-22 19:44:51,109 INFO L109 eAbstractionObserver]: Analyzing ICFG res1f.c [2020-08-22 19:44:51,127 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:44:51,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:44:51,185 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:44:51,221 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:44:51,221 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:44:51,221 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:44:51,222 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:44:51,222 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:44:51,222 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:44:51,222 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:44:51,223 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:44:51,244 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states. [2020-08-22 19:44:51,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 19:44:51,260 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:51,261 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] [2020-08-22 19:44:51,261 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:51,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:51,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1226656927, now seen corresponding path program 1 times [2020-08-22 19:44:51,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:51,276 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1451986411] [2020-08-22 19:44:51,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:51,335 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:44:51,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:51,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:44:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:51,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 19:44:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:51,544 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 19:44:51,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1451986411] [2020-08-22 19:44:51,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:44:51,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:44:51,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548687695] [2020-08-22 19:44:51,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:44:51,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:44:51,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:44:51,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:44:51,580 INFO L87 Difference]: Start difference. First operand 74 states. Second operand 3 states. [2020-08-22 19:44:51,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:44:51,836 INFO L93 Difference]: Finished difference Result 131 states and 150 transitions. [2020-08-22 19:44:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:44:51,839 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-08-22 19:44:51,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:44:51,851 INFO L225 Difference]: With dead ends: 131 [2020-08-22 19:44:51,851 INFO L226 Difference]: Without dead ends: 62 [2020-08-22 19:44:51,856 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 19:44:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-08-22 19:44:51,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-08-22 19:44:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-08-22 19:44:51,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2020-08-22 19:44:51,915 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 37 [2020-08-22 19:44:51,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:44:51,916 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2020-08-22 19:44:51,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:44:51,917 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2020-08-22 19:44:51,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 19:44:51,921 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:51,921 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] [2020-08-22 19:44:51,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:44:51,922 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:51,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:51,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1534386935, now seen corresponding path program 1 times [2020-08-22 19:44:51,925 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:51,927 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702587761] [2020-08-22 19:44:51,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:51,934 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:44:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:52,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:44:52,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:52,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-08-22 19:44:52,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:52,167 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 19:44:52,168 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702587761] [2020-08-22 19:44:52,168 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:44:52,168 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:44:52,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994059454] [2020-08-22 19:44:52,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:44:52,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:44:52,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:44:52,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:44:52,173 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 5 states. [2020-08-22 19:44:52,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:44:52,539 INFO L93 Difference]: Finished difference Result 118 states and 127 transitions. [2020-08-22 19:44:52,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 19:44:52,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-08-22 19:44:52,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:44:52,542 INFO L225 Difference]: With dead ends: 118 [2020-08-22 19:44:52,542 INFO L226 Difference]: Without dead ends: 86 [2020-08-22 19:44:52,544 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 19:44:52,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-22 19:44:52,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2020-08-22 19:44:52,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-22 19:44:52,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-08-22 19:44:52,562 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 37 [2020-08-22 19:44:52,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:44:52,563 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-08-22 19:44:52,563 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:44:52,563 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-08-22 19:44:52,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-08-22 19:44:52,565 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:52,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:44:52,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:44:52,566 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:52,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:52,566 INFO L82 PathProgramCache]: Analyzing trace with hash 1623654441, now seen corresponding path program 1 times [2020-08-22 19:44:52,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:52,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193759549] [2020-08-22 19:44:52,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:52,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:44:52,599 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 19:44:52,606 INFO L168 Benchmark]: Toolchain (without parser) took 2351.10 ms. Allocated memory was 139.5 MB in the beginning and 235.9 MB in the end (delta: 96.5 MB). Free memory was 103.7 MB in the beginning and 197.0 MB in the end (delta: -93.3 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:52,607 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:44:52,608 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.63 ms. Allocated memory is still 139.5 MB. Free memory was 103.5 MB in the beginning and 92.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:52,609 INFO L168 Benchmark]: Boogie Preprocessor took 139.35 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 180.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:52,610 INFO L168 Benchmark]: RCFGBuilder took 393.96 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 159.6 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:52,611 INFO L168 Benchmark]: TraceAbstraction took 1506.13 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 159.6 MB in the beginning and 197.0 MB in the end (delta: -37.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 19:44:52,615 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 304.63 ms. Allocated memory is still 139.5 MB. Free memory was 103.5 MB in the beginning and 92.8 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.35 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 92.8 MB in the beginning and 180.7 MB in the end (delta: -87.9 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.96 ms. Allocated memory is still 203.4 MB. Free memory was 180.7 MB in the beginning and 159.6 MB in the end (delta: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1506.13 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 159.6 MB in the beginning and 197.0 MB in the end (delta: -37.4 MB). There was no memory consumed. 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...