/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-b7b32d2 [2021-02-22 02:19:42,309 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:19:42,313 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:19:42,368 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:19:42,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:19:42,398 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:19:42,399 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:19:42,401 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:19:42,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:19:42,407 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:19:42,415 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:19:42,422 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:19:42,423 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:19:42,427 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:19:42,428 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:19:42,430 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:19:42,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:19:42,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:19:42,460 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:19:42,461 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:19:42,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:19:42,489 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:19:42,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:19:42,495 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:19:42,495 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:19:42,495 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:19:42,496 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:19:42,496 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:19:42,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:19:42,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:19:42,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:19:42,497 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:19:42,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:19:42,498 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:19:42,498 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:19:42,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:19:42,499 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:19:42,499 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:19:42,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:19:42,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:19:42,500 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:19:42,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:19:42,500 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:19:42,500 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:19:42,500 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:19:42,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:19:42,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:19:42,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:19:42,920 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:19:42,921 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:19:42,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/skippedu.c [2021-02-22 02:19:43,002 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89d349960/c4882af36c7f493d9baedd351471b8c3/FLAGdc75d653e [2021-02-22 02:19:43,732 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:19:43,733 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-tiling/skippedu.c [2021-02-22 02:19:43,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89d349960/c4882af36c7f493d9baedd351471b8c3/FLAGdc75d653e [2021-02-22 02:19:43,764 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/89d349960/c4882af36c7f493d9baedd351471b8c3 [2021-02-22 02:19:43,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:19:43,786 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:19:43,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:19:43,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:19:43,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:19:43,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:19:43" (1/1) ... [2021-02-22 02:19:43,797 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a668941 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:43, skipping insertion in model container [2021-02-22 02:19:43,797 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:19:43" (1/1) ... [2021-02-22 02:19:43,806 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:19:43,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:19:43,969 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] [2021-02-22 02:19:44,001 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:19:44,018 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:19:44,037 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] [2021-02-22 02:19:44,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:19:44,090 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:19:44,091 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:44 WrapperNode [2021-02-22 02:19:44,091 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:19:44,092 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:19:44,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:19:44,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:19:44,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:44" (1/1) ... [2021-02-22 02:19:44,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:44" (1/1) ... [2021-02-22 02:19:44,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:44" (1/1) ... [2021-02-22 02:19:44,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:44" (1/1) ... [2021-02-22 02:19:44,155 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:44" (1/1) ... [2021-02-22 02:19:44,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:44" (1/1) ... [2021-02-22 02:19:44,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:44" (1/1) ... [2021-02-22 02:19:44,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:19:44,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:19:44,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:19:44,183 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:19:44,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:44" (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 [2021-02-22 02:19:44,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:19:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:19:44,310 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:19:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:19:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:19:44,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:19:44,312 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:19:44,313 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:19:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:19:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:19:44,314 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:19:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:19:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:19:44,315 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:19:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:19:44,316 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:19:44,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:19:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:19:44,318 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:19:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:19:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:19:44,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:19:44,920 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:19:44,920 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-22 02:19:44,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:19:44 BoogieIcfgContainer [2021-02-22 02:19:44,923 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:19:44,926 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:19:44,926 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:19:44,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:19:44,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:19:43" (1/3) ... [2021-02-22 02:19:44,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2b2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:19:44, skipping insertion in model container [2021-02-22 02:19:44,932 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:19:44" (2/3) ... [2021-02-22 02:19:44,933 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2b2b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:19:44, skipping insertion in model container [2021-02-22 02:19:44,933 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:19:44" (3/3) ... [2021-02-22 02:19:44,935 INFO L111 eAbstractionObserver]: Analyzing ICFG skippedu.c [2021-02-22 02:19:44,943 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:19:44,949 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:19:44,972 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:19:45,007 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:19:45,008 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:19:45,008 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:19:45,008 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:19:45,008 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:19:45,008 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:19:45,009 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:19:45,009 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:19:45,031 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states. [2021-02-22 02:19:45,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-22 02:19:45,044 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:45,045 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] [2021-02-22 02:19:45,046 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:45,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:45,055 INFO L82 PathProgramCache]: Analyzing trace with hash -658052109, now seen corresponding path program 1 times [2021-02-22 02:19:45,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:45,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286121293] [2021-02-22 02:19:45,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:45,155 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:19:45,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:45,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:45,321 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:45,322 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:45,323 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:45,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:19:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:45,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:45,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:45,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-22 02:19:45,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:45,428 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:45,429 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:45,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:19:45,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286121293] [2021-02-22 02:19:45,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:19:45,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:19:45,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397194810] [2021-02-22 02:19:45,452 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:19:45,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:19:45,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:19:45,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:19:45,472 INFO L87 Difference]: Start difference. First operand 72 states. Second operand 3 states. [2021-02-22 02:19:45,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:19:45,786 INFO L93 Difference]: Finished difference Result 114 states and 135 transitions. [2021-02-22 02:19:45,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:19:45,789 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-22 02:19:45,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:19:45,811 INFO L225 Difference]: With dead ends: 114 [2021-02-22 02:19:45,811 INFO L226 Difference]: Without dead ends: 64 [2021-02-22 02:19:45,817 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 [2021-02-22 02:19:45,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-02-22 02:19:45,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2021-02-22 02:19:45,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-02-22 02:19:45,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2021-02-22 02:19:45,896 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 38 [2021-02-22 02:19:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:19:45,897 INFO L480 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2021-02-22 02:19:45,897 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:19:45,897 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2021-02-22 02:19:45,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-22 02:19:45,899 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:45,899 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] [2021-02-22 02:19:45,900 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:19:45,900 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:45,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:45,901 INFO L82 PathProgramCache]: Analyzing trace with hash 662856542, now seen corresponding path program 1 times [2021-02-22 02:19:45,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:45,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [348468895] [2021-02-22 02:19:45,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:45,905 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:19:45,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:45,967 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:45,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:45,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:45,970 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:19:45,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:45,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:19:45,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:45,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:46,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:19:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:46,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:46,072 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:46,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-02-22 02:19:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:46,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:46,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:19:46,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [348468895] [2021-02-22 02:19:46,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:19:46,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:19:46,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455989138] [2021-02-22 02:19:46,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:19:46,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:19:46,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:19:46,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:19:46,095 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2021-02-22 02:19:46,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:19:46,518 INFO L93 Difference]: Finished difference Result 111 states and 120 transitions. [2021-02-22 02:19:46,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:19:46,519 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-22 02:19:46,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:19:46,523 INFO L225 Difference]: With dead ends: 111 [2021-02-22 02:19:46,523 INFO L226 Difference]: Without dead ends: 76 [2021-02-22 02:19:46,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:19:46,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-02-22 02:19:46,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2021-02-22 02:19:46,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-02-22 02:19:46,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2021-02-22 02:19:46,545 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 38 [2021-02-22 02:19:46,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:19:46,546 INFO L480 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2021-02-22 02:19:46,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:19:46,546 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2021-02-22 02:19:46,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-02-22 02:19:46,548 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:46,548 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] [2021-02-22 02:19:46,548 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:19:46,549 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:46,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:46,549 INFO L82 PathProgramCache]: Analyzing trace with hash 625907712, now seen corresponding path program 1 times [2021-02-22 02:19:46,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:46,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43375796] [2021-02-22 02:19:46,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:46,578 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:46,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:19:46,601 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:46,606 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:19:46,623 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:19:46,639 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:19:46,650 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:46,651 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:46,654 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:46,662 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:19:46,665 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:19:46,677 WARN L141 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size [2021-02-22 02:19:46,681 WARN L147 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size 50 [2021-02-22 02:19:46,682 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:19:46,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:46,798 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:46,799 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:46,804 WARN L141 QuantifierPusher]: treesize reduction 30, result has 56.5 percent of original size [2021-02-22 02:19:46,806 WARN L147 QuantifierPusher]: treesize reduction 30, result has 56.5 percent of original size 39 [2021-02-22 02:19:46,841 WARN L141 QuantifierPusher]: treesize reduction 32, result has 56.8 percent of original size [2021-02-22 02:19:46,844 WARN L147 QuantifierPusher]: treesize reduction 32, result has 56.8 percent of original size 42 [2021-02-22 02:19:46,893 WARN L141 QuantifierPusher]: treesize reduction 33, result has 67.6 percent of original size [2021-02-22 02:19:46,896 WARN L147 QuantifierPusher]: treesize reduction 33, result has 67.6 percent of original size 69 [2021-02-22 02:19:46,957 WARN L141 QuantifierPusher]: treesize reduction 33, result has 68.9 percent of original size [2021-02-22 02:19:46,960 WARN L147 QuantifierPusher]: treesize reduction 33, result has 68.9 percent of original size 73 [2021-02-22 02:19:47,032 WARN L141 QuantifierPusher]: treesize reduction 14, result has 6.7 percent of original size [2021-02-22 02:19:47,033 WARN L147 QuantifierPusher]: treesize reduction 14, result has 6.7 percent of original size 1 [2021-02-22 02:19:47,034 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,034 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:47,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:19:47,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:47,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:47,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-02-22 02:19:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:19:47,115 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,116 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:19:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:19:47,124 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,128 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:47,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:19:47,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 43 [2021-02-22 02:19:47,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:19:47,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-22 02:19:47,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,181 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:47,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-22 02:19:47,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-22 02:19:47,230 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,232 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:47,233 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,234 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-22 02:19:47,236 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-02-22 02:19:47,240 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 [2021-02-22 02:19:47,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,244 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:47,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-22 02:19:47,249 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 32 [2021-02-22 02:19:47,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,285 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:47,286 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,287 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 24 [2021-02-22 02:19:47,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 38 [2021-02-22 02:19:47,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,328 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:47,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:19:47,331 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 35 [2021-02-22 02:19:47,335 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 [2021-02-22 02:19:47,337 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-22 02:19:47,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43375796] [2021-02-22 02:19:47,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:19:47,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-02-22 02:19:47,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212967453] [2021-02-22 02:19:47,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-22 02:19:47,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:19:47,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-22 02:19:47,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=104, Unknown=3, NotChecked=42, Total=182 [2021-02-22 02:19:47,355 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 14 states. [2021-02-22 02:19:47,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:19:47,808 INFO L93 Difference]: Finished difference Result 93 states and 100 transitions. [2021-02-22 02:19:47,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-02-22 02:19:47,809 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 45 [2021-02-22 02:19:47,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:19:47,811 INFO L225 Difference]: With dead ends: 93 [2021-02-22 02:19:47,811 INFO L226 Difference]: Without dead ends: 78 [2021-02-22 02:19:47,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=193, Unknown=3, NotChecked=58, Total=306 [2021-02-22 02:19:47,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-02-22 02:19:47,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 66. [2021-02-22 02:19:47,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2021-02-22 02:19:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2021-02-22 02:19:47,830 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 45 [2021-02-22 02:19:47,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:19:47,831 INFO L480 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2021-02-22 02:19:47,831 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-22 02:19:47,831 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2021-02-22 02:19:47,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-02-22 02:19:47,833 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:19:47,833 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] [2021-02-22 02:19:47,833 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-22 02:19:47,833 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:19:47,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:19:47,834 INFO L82 PathProgramCache]: Analyzing trace with hash -494890644, now seen corresponding path program 1 times [2021-02-22 02:19:47,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:19:47,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415266675] [2021-02-22 02:19:47,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:19:47,840 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,842 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:19:47,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 33 [2021-02-22 02:19:47,854 WARN L141 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size [2021-02-22 02:19:47,856 INFO L723 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2021-02-22 02:19:47,858 INFO L730 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,858 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:19:47,860 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:19:47,863 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 36 [2021-02-22 02:19:47,865 WARN L147 QuantifierPusher]: treesize reduction 4, result has 83.3 percent of original size 20 [2021-02-22 02:19:47,868 WARN L141 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size [2021-02-22 02:19:47,871 WARN L147 QuantifierPusher]: treesize reduction 14, result has 78.1 percent of original size 50 [2021-02-22 02:19:47,872 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:19:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:19:47,914 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:19:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:19:47,947 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:19:47,981 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:19:47,981 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:19:47,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-22 02:19:48,003 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:19:48 BoogieIcfgContainer [2021-02-22 02:19:48,003 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:19:48,008 INFO L168 Benchmark]: Toolchain (without parser) took 4229.84 ms. Allocated memory was 160.4 MB in the beginning and 210.8 MB in the end (delta: 50.3 MB). Free memory was 136.0 MB in the beginning and 116.0 MB in the end (delta: 20.0 MB). Peak memory consumption was 71.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:48,009 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 160.4 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:19:48,012 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.46 ms. Allocated memory is still 160.4 MB. Free memory was 135.0 MB in the beginning and 124.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:48,013 INFO L168 Benchmark]: Boogie Preprocessor took 88.98 ms. Allocated memory is still 160.4 MB. Free memory was 124.4 MB in the beginning and 122.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:48,018 INFO L168 Benchmark]: RCFGBuilder took 740.64 ms. Allocated memory is still 160.4 MB. Free memory was 122.7 MB in the beginning and 135.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:48,020 INFO L168 Benchmark]: TraceAbstraction took 3077.48 ms. Allocated memory was 160.4 MB in the beginning and 210.8 MB in the end (delta: 50.3 MB). Free memory was 135.1 MB in the beginning and 116.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 70.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:19:48,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 160.4 MB. Free memory is still 135.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 301.46 ms. Allocated memory is still 160.4 MB. Free memory was 135.0 MB in the beginning and 124.4 MB in the end (delta: 10.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.98 ms. Allocated memory is still 160.4 MB. Free memory was 124.4 MB in the beginning and 122.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 740.64 ms. Allocated memory is still 160.4 MB. Free memory was 122.7 MB in the beginning and 135.6 MB in the end (delta: -12.9 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3077.48 ms. Allocated memory was 160.4 MB in the beginning and 210.8 MB in the end (delta: 50.3 MB). Free memory was 135.1 MB in the beginning and 116.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 70.9 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: 2.9s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.2s, 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, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s 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: 0.0s 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...