/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/array-fpi/res1of.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:47:16,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:47:16,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:47:16,250 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 18:47:16,264 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:47:16,265 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:47:16,266 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:47:16,268 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:47:16,289 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:47:16,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:47:16,298 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:47:16,301 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:47:16,303 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:47:16,305 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:47:16,306 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:47:16,308 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:47:16,311 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:47:16,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:47:16,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:47:16,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:47:16,326 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:47:16,341 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:47:16,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:47:16,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:47:16,343 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:47:16,343 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:47:16,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:47:16,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:47:16,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:47:16,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:47:16,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:47:16,345 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:47:16,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:47:16,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:47:16,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:47:16,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:47:16,346 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:47:16,347 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:47:16,347 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:47:16,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:47:16,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:47:16,348 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:47:16,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:47:16,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:47:16,744 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:47:16,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:47:16,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:47:16,791 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:47:16,792 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:47:16,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1of.c [2021-02-23 18:47:16,887 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c5b2ddd/e86142070bb34d89a9394f81de04f85c/FLAG761e922f8 [2021-02-23 18:47:17,658 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:47:17,659 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1of.c [2021-02-23 18:47:17,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c5b2ddd/e86142070bb34d89a9394f81de04f85c/FLAG761e922f8 [2021-02-23 18:47:17,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9c5b2ddd/e86142070bb34d89a9394f81de04f85c [2021-02-23 18:47:18,005 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:47:18,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:47:18,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:18,024 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:47:18,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:47:18,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:18" (1/1) ... [2021-02-23 18:47:18,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@706e1b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18, skipping insertion in model container [2021-02-23 18:47:18,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:47:18" (1/1) ... [2021-02-23 18:47:18,039 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:47:18,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:47:18,207 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1of.c[589,602] [2021-02-23 18:47:18,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:18,236 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:47:18,250 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1of.c[589,602] [2021-02-23 18:47:18,261 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:47:18,281 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:47:18,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18 WrapperNode [2021-02-23 18:47:18,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:47:18,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:47:18,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:47:18,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:47:18,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18" (1/1) ... [2021-02-23 18:47:18,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18" (1/1) ... [2021-02-23 18:47:18,306 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18" (1/1) ... [2021-02-23 18:47:18,307 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18" (1/1) ... [2021-02-23 18:47:18,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18" (1/1) ... [2021-02-23 18:47:18,336 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18" (1/1) ... [2021-02-23 18:47:18,337 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18" (1/1) ... [2021-02-23 18:47:18,340 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:47:18,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:47:18,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:47:18,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:47:18,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18" (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 [2021-02-23 18:47:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:47:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:47:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:47:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:47:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:47:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:47:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:47:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:47:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:47:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:47:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:47:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:47:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:47:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:47:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:47:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:47:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:47:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:47:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:47:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:47:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:47:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:47:18,902 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:47:18,902 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-23 18:47:18,905 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:18 BoogieIcfgContainer [2021-02-23 18:47:18,905 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:47:18,907 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:47:18,908 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:47:18,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:47:18,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:47:18" (1/3) ... [2021-02-23 18:47:18,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2946dbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:18, skipping insertion in model container [2021-02-23 18:47:18,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:47:18" (2/3) ... [2021-02-23 18:47:18,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2946dbc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:47:18, skipping insertion in model container [2021-02-23 18:47:18,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:47:18" (3/3) ... [2021-02-23 18:47:18,923 INFO L111 eAbstractionObserver]: Analyzing ICFG res1of.c [2021-02-23 18:47:18,934 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:47:18,941 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:47:18,961 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:47:18,990 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:47:18,990 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:47:18,991 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:47:18,991 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:47:18,991 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:47:18,991 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:47:18,991 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:47:18,991 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:47:19,011 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2021-02-23 18:47:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 18:47:19,024 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:19,025 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] [2021-02-23 18:47:19,026 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:19,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:19,033 INFO L82 PathProgramCache]: Analyzing trace with hash -631447669, now seen corresponding path program 1 times [2021-02-23 18:47:19,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:19,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011586204] [2021-02-23 18:47:19,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:19,142 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:19,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:19,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:19,420 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:19,421 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:19,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:19,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:19,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:19,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:19,502 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:19,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:19,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:19,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011586204] [2021-02-23 18:47:19,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:19,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:47:19,522 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650533429] [2021-02-23 18:47:19,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:47:19,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:19,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:47:19,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:19,557 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2021-02-23 18:47:19,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:19,894 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2021-02-23 18:47:19,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:47:19,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-23 18:47:19,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:19,911 INFO L225 Difference]: With dead ends: 137 [2021-02-23 18:47:19,911 INFO L226 Difference]: Without dead ends: 67 [2021-02-23 18:47:19,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:47:19,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-02-23 18:47:19,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-02-23 18:47:20,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-23 18:47:20,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-23 18:47:20,010 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 42 [2021-02-23 18:47:20,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:20,011 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-23 18:47:20,011 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:47:20,012 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-23 18:47:20,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-23 18:47:20,016 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:20,016 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] [2021-02-23 18:47:20,017 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:47:20,017 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:20,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:20,018 INFO L82 PathProgramCache]: Analyzing trace with hash 490949537, now seen corresponding path program 1 times [2021-02-23 18:47:20,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:20,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115077656] [2021-02-23 18:47:20,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:20,034 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:20,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:20,141 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:47:20,156 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:47:20,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:47:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:20,223 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,224 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:47:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:47:20,231 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:47:20,232 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:47:20,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:47:20,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115077656] [2021-02-23 18:47:20,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:47:20,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 18:47:20,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223842360] [2021-02-23 18:47:20,240 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 18:47:20,241 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:47:20,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 18:47:20,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 18:47:20,242 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 5 states. [2021-02-23 18:47:20,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:47:20,497 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2021-02-23 18:47:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 18:47:20,498 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-23 18:47:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:47:20,500 INFO L225 Difference]: With dead ends: 123 [2021-02-23 18:47:20,500 INFO L226 Difference]: Without dead ends: 91 [2021-02-23 18:47:20,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 18:47:20,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-23 18:47:20,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2021-02-23 18:47:20,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-23 18:47:20,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-02-23 18:47:20,518 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 42 [2021-02-23 18:47:20,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:47:20,519 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-02-23 18:47:20,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 18:47:20,519 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-02-23 18:47:20,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-02-23 18:47:20,521 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:47:20,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 18:47:20,522 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:47:20,522 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:47:20,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:47:20,522 INFO L82 PathProgramCache]: Analyzing trace with hash -565475877, now seen corresponding path program 1 times [2021-02-23 18:47:20,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:47:20,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313113326] [2021-02-23 18:47:20,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:47:20,549 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:47:20,551 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:47:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:20,625 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:20,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:47:20,723 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:47:20,778 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:47:20,778 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:47:20,779 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:47:20,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:47:20 BoogieIcfgContainer [2021-02-23 18:47:20,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:47:20,803 INFO L168 Benchmark]: Toolchain (without parser) took 2795.72 ms. Allocated memory is still 151.0 MB. Free memory was 128.5 MB in the beginning and 86.8 MB in the end (delta: 41.6 MB). Peak memory consumption was 42.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:20,804 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:47:20,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.24 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 117.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:20,806 INFO L168 Benchmark]: Boogie Preprocessor took 56.85 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:20,807 INFO L168 Benchmark]: RCFGBuilder took 564.22 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 125.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:20,807 INFO L168 Benchmark]: TraceAbstraction took 1893.96 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 86.8 MB in the end (delta: 37.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:47:20,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 151.0 MB. Free memory is still 124.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 258.24 ms. Allocated memory is still 151.0 MB. Free memory was 127.4 MB in the beginning and 117.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.85 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 564.22 ms. Allocated memory is still 151.0 MB. Free memory was 115.6 MB in the beginning and 125.2 MB in the end (delta: -9.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1893.96 ms. Allocated memory is still 151.0 MB. Free memory was 124.7 MB in the beginning and 86.8 MB in the end (delta: 37.9 MB). Peak memory consumption was 38.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 0 [L33] i=0 [L33] COND TRUE i