/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:57:51,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:57:51,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:57:51,618 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-11-07 01:57:51,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:57:51,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:57:51,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:57:51,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:57:51,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:57:51,664 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:57:51,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:57:51,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:57:51,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:57:51,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:57:51,685 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:57:51,686 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:57:51,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:57:51,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:57:51,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:57:51,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:57:51,704 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:57:51,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:57:51,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:57:51,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:57:51,742 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:57:51,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:57:51,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:57:51,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:57:51,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:57:51,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:57:51,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:57:51,745 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:57:51,745 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:57:51,745 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:57:51,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:57:51,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:57:51,746 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:57:51,746 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:57:51,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:57:51,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:57:51,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:57:51,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:57:51,747 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:57:51,747 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:57:52,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:57:52,164 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:57:52,168 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:57:52,169 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:57:52,170 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:57:52,171 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-11-07 01:57:52,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1266f2c0d/6dced3f13ca9488f8b6660339401dfd1/FLAG4b9b753b8 [2020-11-07 01:57:52,905 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:57:52,906 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2020-11-07 01:57:52,914 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1266f2c0d/6dced3f13ca9488f8b6660339401dfd1/FLAG4b9b753b8 [2020-11-07 01:57:53,274 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1266f2c0d/6dced3f13ca9488f8b6660339401dfd1 [2020-11-07 01:57:53,277 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:57:53,285 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:57:53,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:57:53,287 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:57:53,291 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:57:53,292 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:53" (1/1) ... [2020-11-07 01:57:53,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7206cf2b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:53, skipping insertion in model container [2020-11-07 01:57:53,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:57:53" (1/1) ... [2020-11-07 01:57:53,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:57:53,321 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:57:53,498 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:57:53,508 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:57:53,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:57:53,553 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:57:53,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:53 WrapperNode [2020-11-07 01:57:53,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:57:53,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:57:53,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:57:53,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:57:53,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:53" (1/1) ... [2020-11-07 01:57:53,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:53" (1/1) ... [2020-11-07 01:57:53,578 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:53" (1/1) ... [2020-11-07 01:57:53,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:53" (1/1) ... [2020-11-07 01:57:53,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:53" (1/1) ... [2020-11-07 01:57:53,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:53" (1/1) ... [2020-11-07 01:57:53,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:53" (1/1) ... [2020-11-07 01:57:53,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:57:53,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:57:53,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:57:53,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:57:53,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:53" (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 [2020-11-07 01:57:53,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:57:53,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:57:53,686 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:57:53,687 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:57:53,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:57:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:57:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:57:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:57:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:57:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:57:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:57:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-11-07 01:57:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:57:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:57:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:57:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:57:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:57:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:57:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:57:54,402 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:57:54,402 INFO L298 CfgBuilder]: Removed 4 assume(true) statements. [2020-11-07 01:57:54,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:54 BoogieIcfgContainer [2020-11-07 01:57:54,404 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:57:54,406 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:57:54,407 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:57:54,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:57:54,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:57:53" (1/3) ... [2020-11-07 01:57:54,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11834e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:54, skipping insertion in model container [2020-11-07 01:57:54,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:57:53" (2/3) ... [2020-11-07 01:57:54,412 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11834e22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:57:54, skipping insertion in model container [2020-11-07 01:57:54,412 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:57:54" (3/3) ... [2020-11-07 01:57:54,414 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-11-07 01:57:54,431 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:57:54,436 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:57:54,451 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:57:54,477 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:57:54,477 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:57:54,477 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:57:54,477 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:57:54,478 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:57:54,478 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:57:54,478 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:57:54,478 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:57:54,496 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-11-07 01:57:54,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-07 01:57:54,508 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:54,509 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] [2020-11-07 01:57:54,509 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:54,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:54,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1982843023, now seen corresponding path program 1 times [2020-11-07 01:57:54,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:54,527 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [818798369] [2020-11-07 01:57:54,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:54,607 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:54,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:54,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:54,844 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [818798369] [2020-11-07 01:57:54,846 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:54,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:57:54,847 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748149354] [2020-11-07 01:57:54,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:57:54,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:54,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:57:54,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:57:54,871 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 3 states. [2020-11-07 01:57:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:55,095 INFO L93 Difference]: Finished difference Result 123 states and 139 transitions. [2020-11-07 01:57:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:57:55,097 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-11-07 01:57:55,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:55,105 INFO L225 Difference]: With dead ends: 123 [2020-11-07 01:57:55,106 INFO L226 Difference]: Without dead ends: 63 [2020-11-07 01:57:55,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:57:55,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-07 01:57:55,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-11-07 01:57:55,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-11-07 01:57:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2020-11-07 01:57:55,173 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 34 [2020-11-07 01:57:55,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:55,173 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2020-11-07 01:57:55,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:57:55,174 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2020-11-07 01:57:55,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-07 01:57:55,175 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:55,176 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] [2020-11-07 01:57:55,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:57:55,176 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:55,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:55,177 INFO L82 PathProgramCache]: Analyzing trace with hash 499487449, now seen corresponding path program 1 times [2020-11-07 01:57:55,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:55,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734376668] [2020-11-07 01:57:55,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:57:55,181 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:57:55,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:55,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:57:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:57:55,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:57:55,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734376668] [2020-11-07 01:57:55,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:57:55,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-07 01:57:55,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627301205] [2020-11-07 01:57:55,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-07 01:57:55,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:57:55,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-07 01:57:55,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 01:57:55,446 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand 6 states. [2020-11-07 01:57:55,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:57:55,701 INFO L93 Difference]: Finished difference Result 135 states and 146 transitions. [2020-11-07 01:57:55,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-07 01:57:55,702 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-11-07 01:57:55,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:57:55,706 INFO L225 Difference]: With dead ends: 135 [2020-11-07 01:57:55,706 INFO L226 Difference]: Without dead ends: 93 [2020-11-07 01:57:55,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-07 01:57:55,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-07 01:57:55,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2020-11-07 01:57:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-07 01:57:55,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-11-07 01:57:55,725 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 34 [2020-11-07 01:57:55,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:57:55,725 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-11-07 01:57:55,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-07 01:57:55,726 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-11-07 01:57:55,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-07 01:57:55,727 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:57:55,728 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] [2020-11-07 01:57:55,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:57:55,728 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:57:55,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:57:55,729 INFO L82 PathProgramCache]: Analyzing trace with hash 1895477852, now seen corresponding path program 1 times [2020-11-07 01:57:55,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:57:55,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533888439] [2020-11-07 01:57:55,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:58:07,518 WARN L194 SmtUtils]: Spent 11.70 s on a formula simplification. DAG size of input: 138 DAG size of output: 138 [2020-11-07 01:58:07,539 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:58:07,545 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:58:07,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:58:07,680 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:58:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:58:07,739 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:58:07,785 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:58:07,785 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:58:07,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:58:07,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:58:07 BoogieIcfgContainer [2020-11-07 01:58:07,815 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:58:07,821 INFO L168 Benchmark]: Toolchain (without parser) took 14537.57 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 134.2 MB in the beginning and 125.6 MB in the end (delta: 8.7 MB). Peak memory consumption was 40.7 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:07,823 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 103.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:58:07,826 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.29 ms. Allocated memory is still 157.3 MB. Free memory was 133.6 MB in the beginning and 123.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:07,830 INFO L168 Benchmark]: Boogie Preprocessor took 43.88 ms. Allocated memory is still 157.3 MB. Free memory was 123.9 MB in the beginning and 122.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:07,833 INFO L168 Benchmark]: RCFGBuilder took 804.71 ms. Allocated memory is still 157.3 MB. Free memory was 122.0 MB in the beginning and 135.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:07,834 INFO L168 Benchmark]: TraceAbstraction took 13409.24 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 134.8 MB in the beginning and 125.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 8.0 GB. [2020-11-07 01:58:07,842 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 125.8 MB. Free memory is still 103.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.29 ms. Allocated memory is still 157.3 MB. Free memory was 133.6 MB in the beginning and 123.9 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 43.88 ms. Allocated memory is still 157.3 MB. Free memory was 123.9 MB in the beginning and 122.3 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 804.71 ms. Allocated memory is still 157.3 MB. Free memory was 122.0 MB in the beginning and 135.4 MB in the end (delta: -13.3 MB). Peak memory consumption was 18.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13409.24 ms. Allocated memory was 157.3 MB in the beginning and 188.7 MB in the end (delta: 31.5 MB). Free memory was 134.8 MB in the beginning and 125.6 MB in the end (delta: 9.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L16] unsigned int M = __VERIFIER_nondet_uint(); [L17] int A[M], B[M], C[M]; [L18] unsigned int i; [L20] i=0 [L20] COND TRUE i