/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/ssinaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:58:31,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:58:31,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:58:31,993 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:58:31,994 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:58:31,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:58:31,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:58:32,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:58:32,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:58:32,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:58:32,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:58:32,019 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:58:32,020 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:58:32,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:58:32,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:58:32,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:58:32,031 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:58:32,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:58:32,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:58:32,042 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:58:32,046 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:58:32,048 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:58:32,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:58:32,051 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:58:32,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:58:32,054 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:58:32,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:58:32,058 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:58:32,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:58:32,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:58:32,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:58:32,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:58:32,062 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:58:32,063 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:58:32,064 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:58:32,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:58:32,067 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:58:32,067 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:58:32,067 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:58:32,068 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:58:32,070 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:58:32,071 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:58:32,084 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:58:32,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:58:32,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:58:32,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:58:32,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:58:32,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:58:32,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:58:32,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:58:32,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:58:32,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:58:32,090 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:58:32,090 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:58:32,090 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:58:32,090 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:58:32,091 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:58:32,091 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:58:32,091 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:58:32,091 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:58:32,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:58:32,092 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:58:32,092 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:58:32,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:58:32,092 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:58:32,371 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:58:32,384 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:58:32,387 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:58:32,388 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:58:32,388 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:58:32,389 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ssinaf.c [2020-07-07 13:58:32,452 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7173cd1d3/5147c5761a0e42598751e588a59d0b23/FLAG2950bab73 [2020-07-07 13:58:32,852 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:58:32,853 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ssinaf.c [2020-07-07 13:58:32,860 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7173cd1d3/5147c5761a0e42598751e588a59d0b23/FLAG2950bab73 [2020-07-07 13:58:33,255 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7173cd1d3/5147c5761a0e42598751e588a59d0b23 [2020-07-07 13:58:33,266 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:58:33,269 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:58:33,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:33,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:58:33,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:58:33,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:33" (1/1) ... [2020-07-07 13:58:33,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a37042a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:33, skipping insertion in model container [2020-07-07 13:58:33,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:33" (1/1) ... [2020-07-07 13:58:33,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:58:33,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:58:33,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:33,529 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:58:33,552 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:33,568 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:58:33,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:33 WrapperNode [2020-07-07 13:58:33,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:33,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:58:33,570 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:58:33,570 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:58:33,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:33" (1/1) ... [2020-07-07 13:58:33,672 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:33" (1/1) ... [2020-07-07 13:58:33,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:33" (1/1) ... [2020-07-07 13:58:33,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:33" (1/1) ... [2020-07-07 13:58:33,692 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:33" (1/1) ... [2020-07-07 13:58:33,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:33" (1/1) ... [2020-07-07 13:58:33,703 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:33" (1/1) ... [2020-07-07 13:58:33,714 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:58:33,715 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:58:33,715 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:58:33,715 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:58:33,716 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:58:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:58:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:58:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 13:58:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:58:33,780 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:58:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:58:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:58:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 13:58:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:58:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:58:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:58:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:58:33,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:58:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:58:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:58:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:58:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:58:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:58:33,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:58:34,120 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:58:34,121 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-07 13:58:34,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:34 BoogieIcfgContainer [2020-07-07 13:58:34,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:58:34,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:58:34,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:58:34,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:58:34,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:58:33" (1/3) ... [2020-07-07 13:58:34,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75febb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:34, skipping insertion in model container [2020-07-07 13:58:34,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:33" (2/3) ... [2020-07-07 13:58:34,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75febb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:34, skipping insertion in model container [2020-07-07 13:58:34,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:34" (3/3) ... [2020-07-07 13:58:34,134 INFO L109 eAbstractionObserver]: Analyzing ICFG ssinaf.c [2020-07-07 13:58:34,146 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:58:34,153 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:58:34,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:58:34,190 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:58:34,190 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:58:34,190 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:58:34,190 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:58:34,190 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:58:34,191 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:58:34,191 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:58:34,191 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:58:34,209 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-07-07 13:58:34,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 13:58:34,222 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:34,223 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] [2020-07-07 13:58:34,224 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:34,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:34,230 INFO L82 PathProgramCache]: Analyzing trace with hash 2063962602, now seen corresponding path program 1 times [2020-07-07 13:58:34,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:34,239 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112594472] [2020-07-07 13:58:34,239 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:34,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:34,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:34,476 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:34,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112594472] [2020-07-07 13:58:34,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:34,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:58:34,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931160499] [2020-07-07 13:58:34,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:58:34,489 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:34,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:58:34,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:58:34,514 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-07-07 13:58:34,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:34,846 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2020-07-07 13:58:34,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:58:34,848 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-07-07 13:58:34,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:34,867 INFO L225 Difference]: With dead ends: 167 [2020-07-07 13:58:34,867 INFO L226 Difference]: Without dead ends: 83 [2020-07-07 13:58:34,874 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 [2020-07-07 13:58:34,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-07 13:58:34,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-07-07 13:58:34,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-07 13:58:34,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-07-07 13:58:34,965 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 40 [2020-07-07 13:58:34,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:34,968 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-07-07 13:58:34,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:58:34,968 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-07-07 13:58:34,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 13:58:34,973 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:34,973 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] [2020-07-07 13:58:34,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:58:34,975 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:34,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:34,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1243022369, now seen corresponding path program 1 times [2020-07-07 13:58:34,976 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:34,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362529136] [2020-07-07 13:58:34,977 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:35,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:35,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:58:35,097 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:35,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [362529136] [2020-07-07 13:58:35,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:35,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:58:35,099 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658814006] [2020-07-07 13:58:35,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:58:35,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:35,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:58:35,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:58:35,101 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 5 states. [2020-07-07 13:58:35,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:35,450 INFO L93 Difference]: Finished difference Result 180 states and 195 transitions. [2020-07-07 13:58:35,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:58:35,451 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-07-07 13:58:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:35,455 INFO L225 Difference]: With dead ends: 180 [2020-07-07 13:58:35,455 INFO L226 Difference]: Without dead ends: 125 [2020-07-07 13:58:35,457 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 [2020-07-07 13:58:35,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-07 13:58:35,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 88. [2020-07-07 13:58:35,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-07 13:58:35,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-07-07 13:58:35,479 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 40 [2020-07-07 13:58:35,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:35,479 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-07-07 13:58:35,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:58:35,480 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-07-07 13:58:35,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-07 13:58:35,482 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:35,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:35,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:58:35,483 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:35,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:35,483 INFO L82 PathProgramCache]: Analyzing trace with hash -88576135, now seen corresponding path program 1 times [2020-07-07 13:58:35,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:35,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617637407] [2020-07-07 13:58:35,484 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:35,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:58:35,516 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:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) 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) [2020-07-07 13:58:35,522 INFO L168 Benchmark]: Toolchain (without parser) took 2252.80 ms. Allocated memory was 145.2 MB in the beginning and 235.9 MB in the end (delta: 90.7 MB). Free memory was 103.1 MB in the beginning and 180.8 MB in the end (delta: -77.7 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:58:35,523 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:58:35,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.60 ms. Allocated memory is still 145.2 MB. Free memory was 102.9 MB in the beginning and 91.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:58:35,525 INFO L168 Benchmark]: Boogie Preprocessor took 144.88 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 91.9 MB in the beginning and 180.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:58:35,526 INFO L168 Benchmark]: RCFGBuilder took 410.85 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 156.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:58:35,527 INFO L168 Benchmark]: TraceAbstraction took 1392.35 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 156.7 MB in the beginning and 180.8 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:58:35,531 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 145.2 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 296.60 ms. Allocated memory is still 145.2 MB. Free memory was 102.9 MB in the beginning and 91.9 MB in the end (delta: 10.9 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.88 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 91.9 MB in the beginning and 180.8 MB in the end (delta: -88.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 410.85 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 156.7 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1392.35 ms. Allocated memory was 203.4 MB in the beginning and 235.9 MB in the end (delta: 32.5 MB). Free memory was 156.7 MB in the beginning and 180.8 MB in the end (delta: -24.1 MB). Peak memory consumption was 8.4 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:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...