/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-fpi/s52iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:29,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:29,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:29,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:20:29,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:29,864 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:29,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:29,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:29,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:29,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:29,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:29,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:29,891 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:29,897 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:29,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:29,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:29,939 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:20:29,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:29,960 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:29,961 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:29,962 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 02:20:29,974 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:29,975 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:29,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:29,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:29,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:29,977 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:29,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:29,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:29,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:29,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:29,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:29,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:29,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:29,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:29,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:29,980 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:29,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:29,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:29,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:29,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:29,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:29,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:29,982 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:29,983 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:30,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:30,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:30,413 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:30,415 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:30,416 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:30,417 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s52iff.c [2021-02-22 02:20:30,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d5dc0e4/0ac56cf7023e473b99bcdf01f3089d56/FLAG9ab1c0c64 [2021-02-22 02:20:31,102 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:31,103 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s52iff.c [2021-02-22 02:20:31,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d5dc0e4/0ac56cf7023e473b99bcdf01f3089d56/FLAG9ab1c0c64 [2021-02-22 02:20:31,473 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5d5dc0e4/0ac56cf7023e473b99bcdf01f3089d56 [2021-02-22 02:20:31,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:31,498 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:31,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:31,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:31,505 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:31,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:31" (1/1) ... [2021-02-22 02:20:31,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66795333 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:31, skipping insertion in model container [2021-02-22 02:20:31,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:31" (1/1) ... [2021-02-22 02:20:31,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:31,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:31,688 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s52iff.c[589,602] [2021-02-22 02:20:31,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:31,724 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:31,740 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s52iff.c[589,602] [2021-02-22 02:20:31,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:31,771 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:31,772 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:31 WrapperNode [2021-02-22 02:20:31,772 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:31,773 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:31,773 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:31,774 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:31,789 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:31" (1/1) ... [2021-02-22 02:20:31,789 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:31" (1/1) ... [2021-02-22 02:20:31,799 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:31" (1/1) ... [2021-02-22 02:20:31,799 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:31" (1/1) ... [2021-02-22 02:20:31,810 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:31" (1/1) ... [2021-02-22 02:20:31,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:31" (1/1) ... [2021-02-22 02:20:31,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:31" (1/1) ... [2021-02-22 02:20:31,821 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:31,822 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:31,823 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:31,823 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:31,824 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:31" (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 02:20:31,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:31,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:31,957 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:31,958 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:20:31,958 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:20:31,958 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:31,959 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:31,959 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:31,959 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:31,960 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:31,960 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:20:31,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:20:31,960 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:31,961 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:31,961 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:31,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:31,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:31,963 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:31,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:31,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:31,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:31,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:32,554 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:32,554 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-22 02:20:32,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:32 BoogieIcfgContainer [2021-02-22 02:20:32,557 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:32,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:32,559 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:32,562 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:32,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:31" (1/3) ... [2021-02-22 02:20:32,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38de8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:32, skipping insertion in model container [2021-02-22 02:20:32,564 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:31" (2/3) ... [2021-02-22 02:20:32,564 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38de8d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:32, skipping insertion in model container [2021-02-22 02:20:32,565 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:32" (3/3) ... [2021-02-22 02:20:32,566 INFO L111 eAbstractionObserver]: Analyzing ICFG s52iff.c [2021-02-22 02:20:32,575 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:32,581 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:32,604 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:32,631 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:32,632 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:32,632 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:32,632 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:32,632 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:32,632 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:32,633 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:32,633 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:32,650 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-02-22 02:20:32,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-22 02:20:32,662 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:32,663 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 02:20:32,663 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:32,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:32,670 INFO L82 PathProgramCache]: Analyzing trace with hash -1439408661, now seen corresponding path program 1 times [2021-02-22 02:20:32,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:32,680 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843770484] [2021-02-22 02:20:32,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:32,765 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:32,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:32,907 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:32,908 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:32,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:32,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:32,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:33,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:33,015 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:33,016 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:33,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:33,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:33,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:33,025 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:33,034 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 02:20:33,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843770484] [2021-02-22 02:20:33,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:33,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:20:33,039 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085605830] [2021-02-22 02:20:33,044 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:20:33,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:33,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:20:33,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:33,064 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2021-02-22 02:20:33,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:33,425 INFO L93 Difference]: Finished difference Result 149 states and 168 transitions. [2021-02-22 02:20:33,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:20:33,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-22 02:20:33,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:33,437 INFO L225 Difference]: With dead ends: 149 [2021-02-22 02:20:33,438 INFO L226 Difference]: Without dead ends: 73 [2021-02-22 02:20:33,442 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 02:20:33,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-22 02:20:33,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-22 02:20:33,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-22 02:20:33,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-22 02:20:33,504 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 38 [2021-02-22 02:20:33,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:33,505 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-22 02:20:33,505 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:20:33,505 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-22 02:20:33,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-22 02:20:33,507 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:33,507 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 02:20:33,508 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:33,508 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:33,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:33,509 INFO L82 PathProgramCache]: Analyzing trace with hash -415145042, now seen corresponding path program 1 times [2021-02-22 02:20:33,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:33,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408770835] [2021-02-22 02:20:33,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:33,517 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:33,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:33,609 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:33,610 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:33,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:33,628 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:20:33,652 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:33,654 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:20:33,665 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:33,666 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:33,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:33,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:33,739 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:33,740 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:33,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:33,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:33,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:33,752 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 02:20:33,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408770835] [2021-02-22 02:20:33,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:33,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:20:33,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398162848] [2021-02-22 02:20:33,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:20:33,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:33,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:20:33,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:20:33,756 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 5 states. [2021-02-22 02:20:33,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:33,986 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2021-02-22 02:20:33,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:20:33,986 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-22 02:20:33,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:33,989 INFO L225 Difference]: With dead ends: 147 [2021-02-22 02:20:33,989 INFO L226 Difference]: Without dead ends: 107 [2021-02-22 02:20:33,991 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 [2021-02-22 02:20:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-22 02:20:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 76. [2021-02-22 02:20:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-22 02:20:34,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-02-22 02:20:34,008 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 38 [2021-02-22 02:20:34,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:34,009 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-02-22 02:20:34,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:20:34,009 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-02-22 02:20:34,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-22 02:20:34,015 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:34,015 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:20:34,015 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:34,015 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:34,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:34,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1781170039, now seen corresponding path program 1 times [2021-02-22 02:20:34,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:34,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76596270] [2021-02-22 02:20:34,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:34,047 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:34,062 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:34,071 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:34,074 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:34,082 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-22 02:20:34,096 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-22 02:20:34,101 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-22 02:20:34,103 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-22 02:20:34,104 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:20:34,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:34,176 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:34,218 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:34,258 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:20:34,258 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:34,259 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:20:34,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:34 BoogieIcfgContainer [2021-02-22 02:20:34,280 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:34,282 INFO L168 Benchmark]: Toolchain (without parser) took 2795.30 ms. Allocated memory is still 151.0 MB. Free memory was 127.3 MB in the beginning and 74.4 MB in the end (delta: 52.9 MB). Peak memory consumption was 53.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:34,283 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 125.7 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:34,283 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.34 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 115.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:34,284 INFO L168 Benchmark]: Boogie Preprocessor took 48.44 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:34,285 INFO L168 Benchmark]: RCFGBuilder took 734.38 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 123.8 MB in the end (delta: -10.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:34,286 INFO L168 Benchmark]: TraceAbstraction took 1721.74 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 74.4 MB in the end (delta: 48.9 MB). Peak memory consumption was 49.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:34,289 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory was 125.8 MB in the beginning and 125.7 MB in the end (delta: 77.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 272.34 ms. Allocated memory is still 151.0 MB. Free memory was 126.2 MB in the beginning and 115.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.44 ms. Allocated memory is still 151.0 MB. Free memory was 115.5 MB in the beginning and 113.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 734.38 ms. Allocated memory is still 151.0 MB. Free memory was 113.8 MB in the beginning and 123.8 MB in the end (delta: -10.0 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1721.74 ms. Allocated memory is still 151.0 MB. Free memory was 123.3 MB in the beginning and 74.4 MB in the end (delta: 48.9 MB). Peak memory consumption was 49.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i