/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-1a84f73 [2021-05-01 06:53:22,225 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-01 06:53:22,229 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-01 06:53:22,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-01 06:53:22,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-01 06:53:22,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-01 06:53:22,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-01 06:53:22,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-01 06:53:22,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-01 06:53:22,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-01 06:53:22,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-01 06:53:22,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-01 06:53:22,297 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-01 06:53:22,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-01 06:53:22,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-01 06:53:22,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-01 06:53:22,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-01 06:53:22,315 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-01 06:53:22,316 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-01 06:53:22,326 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-01 06:53:22,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-01 06:53:22,364 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-01 06:53:22,365 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-01 06:53:22,366 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-01 06:53:22,367 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-01 06:53:22,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-01 06:53:22,367 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-01 06:53:22,367 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-01 06:53:22,367 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-01 06:53:22,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-01 06:53:22,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-01 06:53:22,368 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-01 06:53:22,368 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-01 06:53:22,368 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-01 06:53:22,368 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-01 06:53:22,368 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-01 06:53:22,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-01 06:53:22,369 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-01 06:53:22,369 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-01 06:53:22,369 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-01 06:53:22,369 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-01 06:53:22,369 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-01 06:53:22,369 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-01 06:53:22,370 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-01 06:53:22,370 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-05-01 06:53:22,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-01 06:53:22,838 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-01 06:53:22,841 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-01 06:53:22,843 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-01 06:53:22,843 INFO L275 PluginConnector]: CDTParser initialized [2021-05-01 06:53:22,846 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2021-05-01 06:53:22,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b9e85b3/e428eaec6d8743988f17e820b4f74776/FLAGe6f4305ec [2021-05-01 06:53:23,496 INFO L306 CDTParser]: Found 1 translation units. [2021-05-01 06:53:23,497 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum_array-1.c [2021-05-01 06:53:23,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b9e85b3/e428eaec6d8743988f17e820b4f74776/FLAGe6f4305ec [2021-05-01 06:53:23,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93b9e85b3/e428eaec6d8743988f17e820b4f74776 [2021-05-01 06:53:23,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-01 06:53:23,886 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-01 06:53:23,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-01 06:53:23,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-01 06:53:23,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-01 06:53:23,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:53:23" (1/1) ... [2021-05-01 06:53:23,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c59d9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:23, skipping insertion in model container [2021-05-01 06:53:23,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.05 06:53:23" (1/1) ... [2021-05-01 06:53:23,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-01 06:53:23,927 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-01 06:53:24,069 WARN L224 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] [2021-05-01 06:53:24,119 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:53:24,133 INFO L203 MainTranslator]: Completed pre-run [2021-05-01 06:53:24,149 WARN L224 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] [2021-05-01 06:53:24,172 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-01 06:53:24,237 INFO L208 MainTranslator]: Completed translation [2021-05-01 06:53:24,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:24 WrapperNode [2021-05-01 06:53:24,238 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-01 06:53:24,239 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-01 06:53:24,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-01 06:53:24,240 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-01 06:53:24,253 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:24" (1/1) ... [2021-05-01 06:53:24,253 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:24" (1/1) ... [2021-05-01 06:53:24,272 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:24" (1/1) ... [2021-05-01 06:53:24,272 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:24" (1/1) ... [2021-05-01 06:53:24,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:24" (1/1) ... [2021-05-01 06:53:24,296 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:24" (1/1) ... [2021-05-01 06:53:24,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:24" (1/1) ... [2021-05-01 06:53:24,300 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-01 06:53:24,301 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-01 06:53:24,301 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-01 06:53:24,302 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-01 06:53:24,303 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:24" (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 [2021-05-01 06:53:24,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-01 06:53:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-01 06:53:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-01 06:53:24,383 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-01 06:53:24,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-01 06:53:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-01 06:53:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-01 06:53:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-01 06:53:24,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-01 06:53:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-01 06:53:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-01 06:53:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-01 06:53:24,385 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-01 06:53:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-01 06:53:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-01 06:53:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-01 06:53:24,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-01 06:53:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-01 06:53:24,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-01 06:53:24,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-01 06:53:24,846 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-05-01 06:53:24,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:53:24 BoogieIcfgContainer [2021-05-01 06:53:24,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-01 06:53:24,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-01 06:53:24,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-01 06:53:24,854 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-01 06:53:24,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.05 06:53:23" (1/3) ... [2021-05-01 06:53:24,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ff51bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:53:24, skipping insertion in model container [2021-05-01 06:53:24,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.05 06:53:24" (2/3) ... [2021-05-01 06:53:24,856 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24ff51bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.05 06:53:24, skipping insertion in model container [2021-05-01 06:53:24,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.05 06:53:24" (3/3) ... [2021-05-01 06:53:24,858 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2021-05-01 06:53:24,865 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-01 06:53:24,869 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-01 06:53:24,890 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-01 06:53:24,914 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-01 06:53:24,914 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-01 06:53:24,914 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-01 06:53:24,915 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-01 06:53:24,915 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-01 06:53:24,915 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-01 06:53:24,915 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-01 06:53:24,915 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-01 06:53:24,951 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-01 06:53:24,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-05-01 06:53:24,964 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:53:24,965 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-01 06:53:24,966 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:53:24,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:53:24,977 INFO L82 PathProgramCache]: Analyzing trace with hash 955945954, now seen corresponding path program 1 times [2021-05-01 06:53:24,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:53:24,988 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1938408988] [2021-05-01 06:53:24,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:53:25,071 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:53:25,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:53:25,383 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:25,387 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:25,389 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:25,390 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-05-01 06:53:25,411 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:25,413 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-05-01 06:53:25,440 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:25,443 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:25,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-01 06:53:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-01 06:53:25,586 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-05-01 06:53:25,590 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-05-01 06:53:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-01 06:53:25,596 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-01 06:53:25,597 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1938408988] [2021-05-01 06:53:25,600 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [1938408988] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-01 06:53:25,600 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-01 06:53:25,601 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-01 06:53:25,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263360028] [2021-05-01 06:53:25,611 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-01 06:53:25,611 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-01 06:53:25,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-01 06:53:25,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-01 06:53:25,626 INFO L87 Difference]: Start difference. First operand has 30 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 23 states have internal predecessors, (32), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:53:25,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-01 06:53:25,890 INFO L93 Difference]: Finished difference Result 71 states and 102 transitions. [2021-05-01 06:53:25,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-01 06:53:25,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2021-05-01 06:53:25,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-01 06:53:25,902 INFO L225 Difference]: With dead ends: 71 [2021-05-01 06:53:25,902 INFO L226 Difference]: Without dead ends: 35 [2021-05-01 06:53:25,909 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 146.2ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-01 06:53:25,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-05-01 06:53:25,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2021-05-01 06:53:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-01 06:53:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-05-01 06:53:25,965 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 17 [2021-05-01 06:53:25,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-01 06:53:25,966 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-05-01 06:53:25,966 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-01 06:53:25,967 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-05-01 06:53:25,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-05-01 06:53:25,967 INFO L511 BasicCegarLoop]: Found error trace [2021-05-01 06:53:25,968 INFO L519 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] [2021-05-01 06:53:25,968 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-01 06:53:25,968 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-01 06:53:25,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-01 06:53:25,969 INFO L82 PathProgramCache]: Analyzing trace with hash -1073067556, now seen corresponding path program 1 times [2021-05-01 06:53:25,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-01 06:53:25,970 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1449238038] [2021-05-01 06:53:25,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-01 06:53:25,994 WARN L74 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2021-05-01 06:53:25,997 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-01 06:53:26,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 06:53:26,057 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 06:53:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-01 06:53:26,134 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-01 06:53:26,175 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-05-01 06:53:26,176 INFO L620 BasicCegarLoop]: Counterexample might be feasible [2021-05-01 06:53:26,177 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-01 06:53:26,206 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.05 06:53:26 BoogieIcfgContainer [2021-05-01 06:53:26,207 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-01 06:53:26,212 INFO L168 Benchmark]: Toolchain (without parser) took 2324.18 ms. Allocated memory is still 188.7 MB. Free memory was 154.3 MB in the beginning and 142.9 MB in the end (delta: 11.5 MB). Peak memory consumption was 12.0 MB. Max. memory is 8.0 GB. [2021-05-01 06:53:26,213 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 188.7 MB. Free memory is still 170.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-01 06:53:26,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 347.89 ms. Allocated memory is still 188.7 MB. Free memory was 154.1 MB in the beginning and 172.6 MB in the end (delta: -18.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-01 06:53:26,216 INFO L168 Benchmark]: Boogie Preprocessor took 61.07 ms. Allocated memory is still 188.7 MB. Free memory was 172.6 MB in the beginning and 171.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-01 06:53:26,217 INFO L168 Benchmark]: RCFGBuilder took 547.21 ms. Allocated memory is still 188.7 MB. Free memory was 171.0 MB in the beginning and 153.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-05-01 06:53:26,217 INFO L168 Benchmark]: TraceAbstraction took 1358.17 ms. Allocated memory is still 188.7 MB. Free memory was 153.2 MB in the beginning and 142.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 11.4 MB. Max. memory is 8.0 GB. [2021-05-01 06:53:26,225 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 188.7 MB. Free memory is still 170.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 347.89 ms. Allocated memory is still 188.7 MB. Free memory was 154.1 MB in the beginning and 172.6 MB in the end (delta: -18.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 61.07 ms. Allocated memory is still 188.7 MB. Free memory was 172.6 MB in the beginning and 171.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 547.21 ms. Allocated memory is still 188.7 MB. Free memory was 171.0 MB in the beginning and 153.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1358.17 ms. Allocated memory is still 188.7 MB. Free memory was 153.2 MB in the beginning and 142.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 11.4 MB. 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