/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/array-tiling/skippedu.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:46:08,258 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:46:08,262 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:46:08,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:46:08,355 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:46:08,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:46:08,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:46:08,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:46:08,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:46:08,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:46:08,377 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:46:08,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:46:08,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:46:08,389 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:46:08,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:46:08,402 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:46:08,413 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:46:08,427 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:46:08,428 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:46:08,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:46:08,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:46:08,458 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:46:08,458 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:46:08,462 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:46:08,463 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:46:08,463 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:46:08,463 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:46:08,463 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:46:08,464 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:46:08,464 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:46:08,464 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:46:08,465 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:46:08,465 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:46:08,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:46:08,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:46:08,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:46:08,467 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:46:08,467 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:46:08,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:46:08,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:46:08,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:46:08,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:46:08,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:46:08,475 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:46:08,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:46:08,872 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:46:08,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:46:08,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:46:08,902 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:46:08,903 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:46:08,904 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu.c [2021-02-24 04:46:08,999 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c538d827c/84f0487084054e58b22100046b2e4d48/FLAGf184086cc [2021-02-24 04:46:09,659 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:46:09,660 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skippedu.c [2021-02-24 04:46:09,667 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c538d827c/84f0487084054e58b22100046b2e4d48/FLAGf184086cc [2021-02-24 04:46:10,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c538d827c/84f0487084054e58b22100046b2e4d48 [2021-02-24 04:46:10,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:46:10,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:46:10,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:10,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:46:10,093 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:46:10,094 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40b16353 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10, skipping insertion in model container [2021-02-24 04:46:10,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,106 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:46:10,126 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:46:10,293 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-tiling/skippedu.c[399,412] [2021-02-24 04:46:10,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:10,330 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:46:10,345 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-tiling/skippedu.c[399,412] [2021-02-24 04:46:10,354 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:46:10,372 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:46:10,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10 WrapperNode [2021-02-24 04:46:10,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:46:10,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:46:10,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:46:10,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:46:10,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,408 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (1/1) ... [2021-02-24 04:46:10,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:46:10,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:46:10,423 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:46:10,423 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:46:10,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (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 [2021-02-24 04:46:10,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:46:10,532 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:46:10,532 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:46:10,533 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 04:46:10,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:46:10,533 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:46:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:46:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:46:10,534 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:46:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:46:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 04:46:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:46:10,535 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 04:46:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 04:46:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:46:10,536 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 04:46:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:46:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:46:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:46:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:46:10,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:46:10,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:46:11,092 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:46:11,092 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 04:46:11,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:11 BoogieIcfgContainer [2021-02-24 04:46:11,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:46:11,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:46:11,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:46:11,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:46:11,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:46:10" (1/3) ... [2021-02-24 04:46:11,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c438b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:11, skipping insertion in model container [2021-02-24 04:46:11,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:46:10" (2/3) ... [2021-02-24 04:46:11,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c438b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:46:11, skipping insertion in model container [2021-02-24 04:46:11,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:46:11" (3/3) ... [2021-02-24 04:46:11,104 INFO L111 eAbstractionObserver]: Analyzing ICFG skippedu.c [2021-02-24 04:46:11,112 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:46:11,118 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:46:11,140 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:46:11,166 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:46:11,166 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:46:11,166 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:46:11,167 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:46:11,167 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:46:11,167 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:46:11,167 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:46:11,167 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:46:11,186 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2021-02-24 04:46:11,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 04:46:11,197 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:11,198 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] [2021-02-24 04:46:11,198 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:11,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:11,206 INFO L82 PathProgramCache]: Analyzing trace with hash -658052109, now seen corresponding path program 1 times [2021-02-24 04:46:11,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:11,217 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827147675] [2021-02-24 04:46:11,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:11,299 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:11,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:11,434 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,435 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:11,437 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,438 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:11,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:11,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:11,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:11,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-24 04:46:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:11,556 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,558 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:11,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:11,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827147675] [2021-02-24 04:46:11,569 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:11,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:46:11,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344410082] [2021-02-24 04:46:11,575 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:46:11,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:11,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:46:11,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:46:11,594 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2021-02-24 04:46:11,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:11,795 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2021-02-24 04:46:11,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:46:11,797 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-24 04:46:11,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:11,806 INFO L225 Difference]: With dead ends: 114 [2021-02-24 04:46:11,806 INFO L226 Difference]: Without dead ends: 64 [2021-02-24 04:46:11,810 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 [2021-02-24 04:46:11,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-24 04:46:11,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-24 04:46:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-24 04:46:11,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2021-02-24 04:46:11,869 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 38 [2021-02-24 04:46:11,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:11,870 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2021-02-24 04:46:11,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:46:11,871 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2021-02-24 04:46:11,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 04:46:11,873 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:11,873 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] [2021-02-24 04:46:11,874 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:46:11,874 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:11,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:11,875 INFO L82 PathProgramCache]: Analyzing trace with hash 662856542, now seen corresponding path program 1 times [2021-02-24 04:46:11,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:11,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026967066] [2021-02-24 04:46:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:11,882 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:46:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:11,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:11,959 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,959 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:11,971 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,972 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:46:11,980 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:11,981 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:12,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:12,030 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,031 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:12,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-24 04:46:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:12,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:12,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:12,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026967066] [2021-02-24 04:46:12,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:12,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:46:12,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41393117] [2021-02-24 04:46:12,047 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:46:12,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:12,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:46:12,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:46:12,049 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2021-02-24 04:46:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:12,334 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2021-02-24 04:46:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 04:46:12,334 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-24 04:46:12,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:12,345 INFO L225 Difference]: With dead ends: 111 [2021-02-24 04:46:12,346 INFO L226 Difference]: Without dead ends: 76 [2021-02-24 04:46:12,349 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 [2021-02-24 04:46:12,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-24 04:46:12,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2021-02-24 04:46:12,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-24 04:46:12,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-02-24 04:46:12,406 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 38 [2021-02-24 04:46:12,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:12,407 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-02-24 04:46:12,407 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:46:12,407 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-02-24 04:46:12,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-24 04:46:12,412 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:12,412 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] [2021-02-24 04:46:12,412 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:46:12,413 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:12,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:12,415 INFO L82 PathProgramCache]: Analyzing trace with hash 625907712, now seen corresponding path program 1 times [2021-02-24 04:46:12,415 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:12,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506596316] [2021-02-24 04:46:12,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:12,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:46:12,466 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:46:12,482 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-24 04:46:12,497 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-24 04:46:12,502 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,503 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:12,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,516 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 04:46:12,519 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-24 04:46:12,527 WARN L141 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size [2021-02-24 04:46:12,530 WARN L147 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size 50 [2021-02-24 04:46:12,531 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:12,673 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,674 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:12,679 WARN L141 QuantifierPusher]: treesize reduction 30, result has 56.5 percent of original size [2021-02-24 04:46:12,682 WARN L147 QuantifierPusher]: treesize reduction 30, result has 56.5 percent of original size 39 [2021-02-24 04:46:12,706 WARN L141 QuantifierPusher]: treesize reduction 32, result has 56.8 percent of original size [2021-02-24 04:46:12,708 WARN L147 QuantifierPusher]: treesize reduction 32, result has 56.8 percent of original size 42 [2021-02-24 04:46:12,739 WARN L141 QuantifierPusher]: treesize reduction 33, result has 67.6 percent of original size [2021-02-24 04:46:12,741 WARN L147 QuantifierPusher]: treesize reduction 33, result has 67.6 percent of original size 69 [2021-02-24 04:46:12,781 WARN L141 QuantifierPusher]: treesize reduction 33, result has 68.9 percent of original size [2021-02-24 04:46:12,784 WARN L147 QuantifierPusher]: treesize reduction 33, result has 68.9 percent of original size 73 [2021-02-24 04:46:12,827 WARN L141 QuantifierPusher]: treesize reduction 14, result has 6.7 percent of original size [2021-02-24 04:46:12,827 WARN L147 QuantifierPusher]: treesize reduction 14, result has 6.7 percent of original size 1 [2021-02-24 04:46:12,828 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:12,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:46:12,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:12,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:12,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-24 04:46:12,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:46:12,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:46:12,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:46:12,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,890 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:12,891 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,894 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:12,895 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-24 04:46:12,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:46:12,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-24 04:46:12,929 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,931 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:12,931 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-24 04:46:12,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:46:12,972 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,975 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:12,976 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,978 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:46:12,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-24 04:46:12,983 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 c_~SIZE~0) (exists ((|v_#memory_int_19| (Array Int (Array Int Int))) (|v_main_#t~nondet10_9| Int)) (and (<= 0 (+ |v_main_#t~nondet10_9| 2147483648)) (= |c_#memory_int| (store |v_#memory_int_19| c_main_~a~0.base (store (select |v_#memory_int_19| c_main_~a~0.base) (+ (* c_main_~i~0 4) c_main_~a~0.offset) |v_main_#t~nondet10_9|))) (<= |v_main_#t~nondet10_9| 2147483647)))) is different from true [2021-02-24 04:46:12,989 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,994 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:12,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:12,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:46:12,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-24 04:46:13,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,031 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:13,032 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,033 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-24 04:46:13,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-24 04:46:13,065 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,069 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:13,070 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,070 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-24 04:46:13,071 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-24 04:46:13,078 WARN L860 $PredicateComparison]: unable to prove that (and (< c_main_~i~0 (+ c_~SIZE~0 1)) (exists ((|v_#memory_int_19| (Array Int (Array Int Int))) (|v_main_#t~nondet10_9| Int)) (and (<= 0 (+ |v_main_#t~nondet10_9| 2147483648)) (<= |v_main_#t~nondet10_9| 2147483647) (= |c_#memory_int| (store |v_#memory_int_19| c_main_~a~0.base (store (select |v_#memory_int_19| c_main_~a~0.base) (+ (* c_main_~i~0 4) c_main_~a~0.offset (- 4)) |v_main_#t~nondet10_9|)))))) is different from true [2021-02-24 04:46:13,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-24 04:46:13,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506596316] [2021-02-24 04:46:13,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:46:13,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-24 04:46:13,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078815359] [2021-02-24 04:46:13,086 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-24 04:46:13,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:46:13,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-24 04:46:13,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=104, Unknown=3, NotChecked=42, Total=182 [2021-02-24 04:46:13,087 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 14 states. [2021-02-24 04:46:13,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:46:13,575 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2021-02-24 04:46:13,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-24 04:46:13,575 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2021-02-24 04:46:13,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:46:13,577 INFO L225 Difference]: With dead ends: 93 [2021-02-24 04:46:13,577 INFO L226 Difference]: Without dead ends: 78 [2021-02-24 04:46:13,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=193, Unknown=3, NotChecked=58, Total=306 [2021-02-24 04:46:13,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-24 04:46:13,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 66. [2021-02-24 04:46:13,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-24 04:46:13,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-02-24 04:46:13,596 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 45 [2021-02-24 04:46:13,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:46:13,596 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-02-24 04:46:13,596 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-24 04:46:13,597 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-02-24 04:46:13,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-24 04:46:13,598 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:46:13,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 04:46:13,599 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 04:46:13,599 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:46:13,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:46:13,600 INFO L82 PathProgramCache]: Analyzing trace with hash -494890644, now seen corresponding path program 1 times [2021-02-24 04:46:13,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:46:13,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990194290] [2021-02-24 04:46:13,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:46:13,605 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,607 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:46:13,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,611 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-24 04:46:13,618 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-24 04:46:13,620 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-24 04:46:13,622 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,623 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-24 04:46:13,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:46:13,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-24 04:46:13,630 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-24 04:46:13,633 WARN L141 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size [2021-02-24 04:46:13,636 WARN L147 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size 50 [2021-02-24 04:46:13,637 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-24 04:46:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:13,675 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 04:46:13,708 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 04:46:13,746 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 04:46:13,746 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 04:46:13,747 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-24 04:46:13,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 04:46:13 BoogieIcfgContainer [2021-02-24 04:46:13,770 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 04:46:13,779 INFO L168 Benchmark]: Toolchain (without parser) took 3699.79 ms. Allocated memory was 161.5 MB in the beginning and 198.2 MB in the end (delta: 36.7 MB). Free memory was 137.7 MB in the beginning and 126.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 48.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:13,780 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 161.5 MB. Free memory is still 136.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:46:13,785 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.44 ms. Allocated memory is still 161.5 MB. Free memory was 136.5 MB in the beginning and 126.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:13,786 INFO L168 Benchmark]: Boogie Preprocessor took 47.84 ms. Allocated memory is still 161.5 MB. Free memory was 126.4 MB in the beginning and 124.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:13,787 INFO L168 Benchmark]: RCFGBuilder took 671.54 ms. Allocated memory is still 161.5 MB. Free memory was 124.8 MB in the beginning and 141.2 MB in the end (delta: -16.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:13,788 INFO L168 Benchmark]: TraceAbstraction took 2673.74 ms. Allocated memory was 161.5 MB in the beginning and 198.2 MB in the end (delta: 36.7 MB). Free memory was 140.7 MB in the beginning and 127.0 MB in the end (delta: 13.7 MB). Peak memory consumption was 52.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:46:13,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 161.5 MB. Free memory is still 136.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 285.44 ms. Allocated memory is still 161.5 MB. Free memory was 136.5 MB in the beginning and 126.4 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 47.84 ms. Allocated memory is still 161.5 MB. Free memory was 126.4 MB in the beginning and 124.9 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 671.54 ms. Allocated memory is still 161.5 MB. Free memory was 124.8 MB in the beginning and 141.2 MB in the end (delta: -16.4 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2673.74 ms. Allocated memory was 161.5 MB in the beginning and 198.2 MB in the end (delta: 36.7 MB). Free memory was 140.7 MB in the beginning and 127.0 MB in the end (delta: 13.7 MB). Peak memory consumption was 52.0 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: [L12] int SIZE; [L14] const int MAX = 100000; [L18] SIZE = __VERIFIER_nondet_int() [L19] COND TRUE SIZE > 1 && SIZE < MAX [L21] int i; [L22] int *a = malloc(sizeof(int)*SIZE); [L24] i = 0 [L24] COND TRUE i < SIZE [L26] a[i] = __VERIFIER_nondet_int() [L24] i++ [L24] COND FALSE !(i < SIZE) [L29] COND FALSE !(SIZE % 2 != 0) [L31] CALL assume_abort_if_not(SIZE % 2 == 0) [L6] COND FALSE !(!cond) [L31] RET assume_abort_if_not(SIZE % 2 == 0) [L32] i = 1 [L32] COND TRUE i <= SIZE/2 [L34] EXPR a[2*i-2] [L34] COND FALSE !(a[2*i-2] > i) [L38] EXPR a[2*i-1] [L38] COND FALSE !(a[2*i-1] > i) [L32] i++ [L32] COND FALSE !(i <= SIZE/2) [L44] i = 0 [L44] COND TRUE i < SIZE [L46] EXPR a[i] [L46] CALL __VERIFIER_assert( a[i] <= i ) [L8] COND TRUE !(cond) [L8] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.5s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 180 SDtfs, 175 SDslu, 116 SDs, 0 SdLazy, 402 SolverSat, 21 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 23 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...