/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 0.2.1-dev-b7b32d2 [2021-02-21 21:17:52,177 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 21:17:52,184 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 21:17:52,225 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 21:17:52,257 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 21:17:52,261 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 21:17:52,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 21:17:52,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 21:17:52,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 21:17:52,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 21:17:52,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 21:17:52,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 21:17:52,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 21:17:52,296 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 21:17:52,297 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 21:17:52,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 21:17:52,325 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 21:17:52,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 21:17:52,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 21:17:52,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 21:17:52,343 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 21:17:52,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 21:17:52,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 21:17:52,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 21:17:52,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 21:17:52,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 21:17:52,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 21:17:52,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 21:17:52,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 21:17:52,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 21:17:52,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 21:17:52,379 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 21:17:52,380 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 21:17:52,380 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 21:17:52,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 21:17:52,381 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 21:17:52,381 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 21:17:52,381 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 21:17:52,381 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 21:17:52,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 21:17:52,382 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 21:17:52,382 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 21:17:52,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 21:17:52,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 21:17:52,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 21:17:52,862 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 21:17:52,865 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 21:17:52,866 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 21:17:52,867 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 21:17:52,868 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2021-02-21 21:17:52,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22b11c7b7/e0eba6078d3344b6bed7f7440f0a650f/FLAG7cc2d48cd [2021-02-21 21:17:53,570 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 21:17:53,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2021-02-21 21:17:53,578 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22b11c7b7/e0eba6078d3344b6bed7f7440f0a650f/FLAG7cc2d48cd [2021-02-21 21:17:53,943 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22b11c7b7/e0eba6078d3344b6bed7f7440f0a650f [2021-02-21 21:17:53,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 21:17:53,962 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 21:17:53,967 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:53,967 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 21:17:53,971 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 21:17:53,972 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:53" (1/1) ... [2021-02-21 21:17:53,973 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ceee169 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:53, skipping insertion in model container [2021-02-21 21:17:53,974 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 09:17:53" (1/1) ... [2021-02-21 21:17:53,982 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 21:17:54,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 21:17:54,158 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c[363,376] [2021-02-21 21:17:54,180 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:54,190 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 21:17:54,205 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c[363,376] [2021-02-21 21:17:54,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 21:17:54,236 INFO L208 MainTranslator]: Completed translation [2021-02-21 21:17:54,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:54 WrapperNode [2021-02-21 21:17:54,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 21:17:54,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 21:17:54,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 21:17:54,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 21:17:54,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:54" (1/1) ... [2021-02-21 21:17:54,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:54" (1/1) ... [2021-02-21 21:17:54,264 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:54" (1/1) ... [2021-02-21 21:17:54,264 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:54" (1/1) ... [2021-02-21 21:17:54,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:54" (1/1) ... [2021-02-21 21:17:54,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:54" (1/1) ... [2021-02-21 21:17:54,282 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:54" (1/1) ... [2021-02-21 21:17:54,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 21:17:54,286 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 21:17:54,286 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 21:17:54,286 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 21:17:54,287 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:54" (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 [2021-02-21 21:17:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 21:17:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 21:17:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 21:17:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 21:17:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 21:17:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 21:17:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 21:17:54,423 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 21:17:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 21:17:54,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 21:17:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 21:17:54,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-21 21:17:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 21:17:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 21:17:54,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 21:17:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 21:17:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 21:17:54,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 21:17:54,429 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 21:17:54,975 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 21:17:54,975 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-21 21:17:54,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:54 BoogieIcfgContainer [2021-02-21 21:17:54,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 21:17:54,979 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 21:17:54,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 21:17:54,983 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 21:17:54,984 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 09:17:53" (1/3) ... [2021-02-21 21:17:54,985 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5f79bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:54, skipping insertion in model container [2021-02-21 21:17:54,985 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 09:17:54" (2/3) ... [2021-02-21 21:17:54,986 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5f79bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 09:17:54, skipping insertion in model container [2021-02-21 21:17:54,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 09:17:54" (3/3) ... [2021-02-21 21:17:54,987 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2021-02-21 21:17:54,995 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 21:17:55,001 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 21:17:55,021 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 21:17:55,048 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 21:17:55,048 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 21:17:55,049 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 21:17:55,049 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 21:17:55,049 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 21:17:55,049 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 21:17:55,049 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 21:17:55,049 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 21:17:55,069 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2021-02-21 21:17:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-21 21:17:55,081 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:55,082 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] [2021-02-21 21:17:55,082 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:55,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:55,089 INFO L82 PathProgramCache]: Analyzing trace with hash 748821666, now seen corresponding path program 1 times [2021-02-21 21:17:55,100 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:55,100 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064797937] [2021-02-21 21:17:55,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:55,185 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:55,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:55,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:55,345 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:55,346 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:55,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:55,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:55,436 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:55,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:55,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:55,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064797937] [2021-02-21 21:17:55,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:55,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 21:17:55,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965333173] [2021-02-21 21:17:55,458 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 21:17:55,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:55,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 21:17:55,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 21:17:55,478 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2021-02-21 21:17:55,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:55,818 INFO L93 Difference]: Finished difference Result 119 states and 134 transitions. [2021-02-21 21:17:55,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 21:17:55,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2021-02-21 21:17:55,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:55,831 INFO L225 Difference]: With dead ends: 119 [2021-02-21 21:17:55,831 INFO L226 Difference]: Without dead ends: 62 [2021-02-21 21:17:55,835 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 [2021-02-21 21:17:55,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-02-21 21:17:55,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-02-21 21:17:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2021-02-21 21:17:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 65 transitions. [2021-02-21 21:17:55,898 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 65 transitions. Word has length 33 [2021-02-21 21:17:55,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:55,898 INFO L480 AbstractCegarLoop]: Abstraction has 62 states and 65 transitions. [2021-02-21 21:17:55,898 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 21:17:55,899 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 65 transitions. [2021-02-21 21:17:55,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-21 21:17:55,902 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:55,903 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] [2021-02-21 21:17:55,903 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 21:17:55,903 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:55,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:55,904 INFO L82 PathProgramCache]: Analyzing trace with hash 274707514, now seen corresponding path program 1 times [2021-02-21 21:17:55,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:55,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44410876] [2021-02-21 21:17:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:17:55,918 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:17:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:56,101 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:56,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,110 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 21:17:56,122 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 21:17:56,150 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 21:17:56,218 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-21 21:17:56,219 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-21 21:17:56,221 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,222 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:56,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 21:17:56,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 21:17:56,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 21:17:56,313 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 21:17:56,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 21:17:56,320 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44410876] [2021-02-21 21:17:56,321 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 21:17:56,321 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 21:17:56,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186045075] [2021-02-21 21:17:56,326 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 21:17:56,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 21:17:56,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 21:17:56,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:17:56,329 INFO L87 Difference]: Start difference. First operand 62 states and 65 transitions. Second operand 6 states. [2021-02-21 21:17:56,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 21:17:56,614 INFO L93 Difference]: Finished difference Result 133 states and 144 transitions. [2021-02-21 21:17:56,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 21:17:56,615 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2021-02-21 21:17:56,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 21:17:56,618 INFO L225 Difference]: With dead ends: 133 [2021-02-21 21:17:56,618 INFO L226 Difference]: Without dead ends: 92 [2021-02-21 21:17:56,620 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 21:17:56,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-02-21 21:17:56,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 65. [2021-02-21 21:17:56,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-21 21:17:56,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 68 transitions. [2021-02-21 21:17:56,637 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 68 transitions. Word has length 33 [2021-02-21 21:17:56,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 21:17:56,638 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 68 transitions. [2021-02-21 21:17:56,638 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 21:17:56,638 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 68 transitions. [2021-02-21 21:17:56,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-02-21 21:17:56,640 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 21:17:56,640 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] [2021-02-21 21:17:56,640 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 21:17:56,641 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 21:17:56,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 21:17:56,641 INFO L82 PathProgramCache]: Analyzing trace with hash 427652598, now seen corresponding path program 1 times [2021-02-21 21:17:56,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 21:17:56,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [362423514] [2021-02-21 21:17:56,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 21:18:08,407 WARN L202 SmtUtils]: Spent 11.74 s on a formula simplification. DAG size of input: 138 DAG size of output: 138 [2021-02-21 21:18:08,433 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-21 21:18:08,435 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 21:18:08,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:18:08,526 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:18:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 21:18:08,653 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 21:18:08,718 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-21 21:18:08,719 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 21:18:08,720 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 21:18:08,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 09:18:08 BoogieIcfgContainer [2021-02-21 21:18:08,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 21:18:08,750 INFO L168 Benchmark]: Toolchain (without parser) took 14800.69 ms. Allocated memory was 162.5 MB in the beginning and 205.5 MB in the end (delta: 43.0 MB). Free memory was 138.9 MB in the beginning and 163.1 MB in the end (delta: -24.2 MB). Peak memory consumption was 19.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:08,753 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 162.5 MB. Free memory is still 137.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:18:08,754 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.15 ms. Allocated memory is still 162.5 MB. Free memory was 137.8 MB in the beginning and 128.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:08,757 INFO L168 Benchmark]: Boogie Preprocessor took 47.21 ms. Allocated memory is still 162.5 MB. Free memory was 128.0 MB in the beginning and 126.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:08,759 INFO L168 Benchmark]: RCFGBuilder took 691.49 ms. Allocated memory is still 162.5 MB. Free memory was 126.3 MB in the beginning and 105.6 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-21 21:18:08,765 INFO L168 Benchmark]: TraceAbstraction took 13768.47 ms. Allocated memory was 162.5 MB in the beginning and 205.5 MB in the end (delta: 43.0 MB). Free memory was 105.3 MB in the beginning and 163.1 MB in the end (delta: -57.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 21:18:08,777 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 162.5 MB. Free memory is still 137.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 270.15 ms. Allocated memory is still 162.5 MB. Free memory was 137.8 MB in the beginning and 128.0 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.21 ms. Allocated memory is still 162.5 MB. Free memory was 128.0 MB in the beginning and 126.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 691.49 ms. Allocated memory is still 162.5 MB. Free memory was 126.3 MB in the beginning and 105.6 MB in the end (delta: 20.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 13768.47 ms. Allocated memory was 162.5 MB in the beginning and 205.5 MB in the end (delta: 43.0 MB). Free memory was 105.3 MB in the beginning and 163.1 MB in the end (delta: -57.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call to reach_error is reachable a call to reach_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