/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 0.1.25-267fbe0 [2020-07-17 14:53:40,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:53:40,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:53:40,025 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:53:40,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:53:40,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:53:40,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:53:40,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:53:40,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:53:40,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:53:40,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:53:40,058 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:53:40,059 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:53:40,062 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:53:40,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:53:40,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:53:40,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:53:40,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:53:40,073 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:53:40,081 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:53:40,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:53:40,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:53:40,097 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:53:40,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:53:40,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:53:40,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:53:40,121 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:53:40,123 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:53:40,124 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 14:53:40,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:53:40,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:53:40,162 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:53:40,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:53:40,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:53:40,163 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:53:40,163 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:53:40,166 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:53:40,166 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:53:40,166 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:53:40,166 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:53:40,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:53:40,167 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:53:40,167 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:53:40,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:53:40,171 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:53:40,171 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:53:40,171 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:53:40,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:53:40,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:53:40,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:53:40,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:53:40,172 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:53:40,505 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:53:40,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:53:40,533 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:53:40,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:53:40,536 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:53:40,538 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ssinaf.c [2020-07-17 14:53:40,628 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c03c1b9/9a21bbee26924f9cbdbf02b75d0a5bfe/FLAG746c99b7b [2020-07-17 14:53:41,359 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:53:41,360 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ssinaf.c [2020-07-17 14:53:41,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c03c1b9/9a21bbee26924f9cbdbf02b75d0a5bfe/FLAG746c99b7b [2020-07-17 14:53:41,594 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/34c03c1b9/9a21bbee26924f9cbdbf02b75d0a5bfe [2020-07-17 14:53:41,611 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:53:41,616 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:53:41,621 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:53:41,621 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:53:41,626 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:53:41,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:53:41" (1/1) ... [2020-07-17 14:53:41,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5debccfa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:41, skipping insertion in model container [2020-07-17 14:53:41,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:53:41" (1/1) ... [2020-07-17 14:53:41,641 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:53:41,665 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:53:41,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:53:41,932 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:53:41,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:53:41,984 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:53:41,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:41 WrapperNode [2020-07-17 14:53:41,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:53:41,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:53:41,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:53:41,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:53:42,110 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:41" (1/1) ... [2020-07-17 14:53:42,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:41" (1/1) ... [2020-07-17 14:53:42,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:41" (1/1) ... [2020-07-17 14:53:42,138 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:41" (1/1) ... [2020-07-17 14:53:42,164 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:41" (1/1) ... [2020-07-17 14:53:42,179 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:41" (1/1) ... [2020-07-17 14:53:42,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:41" (1/1) ... [2020-07-17 14:53:42,184 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:53:42,185 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:53:42,185 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:53:42,185 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:53:42,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:41" (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 [2020-07-17 14:53:42,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:53:42,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:53:42,274 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 14:53:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:53:42,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:53:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:53:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 14:53:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 14:53:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:53:42,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 14:53:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 14:53:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:53:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 14:53:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 14:53:42,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 14:53:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 14:53:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 14:53:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:53:42,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:53:42,811 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:53:42,811 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-07-17 14:53:42,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:53:42 BoogieIcfgContainer [2020-07-17 14:53:42,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:53:42,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:53:42,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:53:42,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:53:42,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:53:41" (1/3) ... [2020-07-17 14:53:42,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e2ccf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:53:42, skipping insertion in model container [2020-07-17 14:53:42,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:53:41" (2/3) ... [2020-07-17 14:53:42,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e2ccf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:53:42, skipping insertion in model container [2020-07-17 14:53:42,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:53:42" (3/3) ... [2020-07-17 14:53:42,834 INFO L109 eAbstractionObserver]: Analyzing ICFG ssinaf.c [2020-07-17 14:53:42,849 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:53:42,860 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:53:42,878 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:53:42,912 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:53:42,913 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:53:42,913 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:53:42,913 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:53:42,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:53:42,913 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:53:42,913 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:53:42,914 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:53:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-07-17 14:53:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-17 14:53:42,950 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:53:42,951 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] [2020-07-17 14:53:42,952 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:53:42,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:53:42,959 INFO L82 PathProgramCache]: Analyzing trace with hash 2063962602, now seen corresponding path program 1 times [2020-07-17 14:53:42,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:53:42,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1909078113] [2020-07-17 14:53:42,969 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:53:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:43,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:53:43,263 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:53:43,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1909078113] [2020-07-17 14:53:43,269 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:53:43,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 14:53:43,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534496780] [2020-07-17 14:53:43,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 14:53:43,281 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:53:43,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 14:53:43,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:53:43,310 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-07-17 14:53:43,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:53:43,766 INFO L93 Difference]: Finished difference Result 167 states and 194 transitions. [2020-07-17 14:53:43,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 14:53:43,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-07-17 14:53:43,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:53:43,782 INFO L225 Difference]: With dead ends: 167 [2020-07-17 14:53:43,782 INFO L226 Difference]: Without dead ends: 83 [2020-07-17 14:53:43,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:53:43,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-07-17 14:53:43,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-07-17 14:53:43,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-17 14:53:43,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2020-07-17 14:53:43,867 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 40 [2020-07-17 14:53:43,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:53:43,869 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2020-07-17 14:53:43,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 14:53:43,869 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2020-07-17 14:53:43,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-17 14:53:43,871 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:53:43,872 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] [2020-07-17 14:53:43,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:53:43,873 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:53:43,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:53:43,874 INFO L82 PathProgramCache]: Analyzing trace with hash 1243022369, now seen corresponding path program 1 times [2020-07-17 14:53:43,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:53:43,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401822751] [2020-07-17 14:53:43,875 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:53:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:44,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:44,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:53:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:53:44,048 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:53:44,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401822751] [2020-07-17 14:53:44,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:53:44,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 14:53:44,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567938690] [2020-07-17 14:53:44,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 14:53:44,052 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:53:44,053 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 14:53:44,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-17 14:53:44,054 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 5 states. [2020-07-17 14:53:44,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:53:44,551 INFO L93 Difference]: Finished difference Result 180 states and 195 transitions. [2020-07-17 14:53:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 14:53:44,552 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2020-07-17 14:53:44,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:53:44,557 INFO L225 Difference]: With dead ends: 180 [2020-07-17 14:53:44,558 INFO L226 Difference]: Without dead ends: 125 [2020-07-17 14:53:44,561 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-17 14:53:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-17 14:53:44,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 88. [2020-07-17 14:53:44,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-17 14:53:44,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-07-17 14:53:44,593 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 40 [2020-07-17 14:53:44,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:53:44,594 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-07-17 14:53:44,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 14:53:44,594 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-07-17 14:53:44,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-07-17 14:53:44,597 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:53:44,598 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] [2020-07-17 14:53:44,598 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:53:44,599 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:53:44,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:53:44,599 INFO L82 PathProgramCache]: Analyzing trace with hash -88576135, now seen corresponding path program 1 times [2020-07-17 14:53:44,600 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:53:44,600 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776113965] [2020-07-17 14:53:44,600 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:53:44,649 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 14:53:44,650 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:458) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:290) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) 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) [2020-07-17 14:53:44,658 INFO L168 Benchmark]: Toolchain (without parser) took 3043.36 ms. Allocated memory was 137.9 MB in the beginning and 235.4 MB in the end (delta: 97.5 MB). Free memory was 101.7 MB in the beginning and 179.3 MB in the end (delta: -77.6 MB). Peak memory consumption was 19.9 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:44,659 INFO L168 Benchmark]: CDTParser took 1.63 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 14:53:44,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 364.40 ms. Allocated memory is still 137.9 MB. Free memory was 101.3 MB in the beginning and 90.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:44,661 INFO L168 Benchmark]: Boogie Preprocessor took 199.30 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 90.5 MB in the beginning and 180.9 MB in the end (delta: -90.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:44,662 INFO L168 Benchmark]: RCFGBuilder took 633.87 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 156.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:44,664 INFO L168 Benchmark]: TraceAbstraction took 1833.94 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 156.7 MB in the beginning and 179.3 MB in the end (delta: -22.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:53:44,669 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.63 ms. Allocated memory is still 137.9 MB. Free memory was 120.0 MB in the beginning and 119.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 364.40 ms. Allocated memory is still 137.9 MB. Free memory was 101.3 MB in the beginning and 90.5 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 199.30 ms. Allocated memory was 137.9 MB in the beginning and 203.4 MB in the end (delta: 65.5 MB). Free memory was 90.5 MB in the beginning and 180.9 MB in the end (delta: -90.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 633.87 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 156.7 MB in the end (delta: 24.1 MB). Peak memory consumption was 24.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1833.94 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 156.7 MB in the beginning and 179.3 MB in the end (delta: -22.5 MB). Peak memory consumption was 9.4 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:458) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...