/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/indp5f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:05,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:05,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:05,859 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:20:05,874 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:05,875 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:05,876 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:05,878 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:05,879 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:05,880 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:05,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:05,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:05,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:05,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:05,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:05,903 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:05,907 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:20:05,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:05,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:05,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:05,921 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 02:20:05,933 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:05,933 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:05,935 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:05,936 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:05,936 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:05,936 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:05,936 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:05,937 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:05,937 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:05,937 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:05,937 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:05,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:05,938 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:05,938 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:05,938 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:05,939 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:05,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:05,939 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:05,939 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:05,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:05,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:05,940 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:05,940 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:05,941 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:06,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:06,375 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:06,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:06,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:06,380 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:06,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp5f.c [2021-02-22 02:20:06,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/654f2d2b9/ef914bd087a940c88613c5ea871b197d/FLAG834bceda6 [2021-02-22 02:20:07,130 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:07,131 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp5f.c [2021-02-22 02:20:07,140 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/654f2d2b9/ef914bd087a940c88613c5ea871b197d/FLAG834bceda6 [2021-02-22 02:20:07,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/654f2d2b9/ef914bd087a940c88613c5ea871b197d [2021-02-22 02:20:07,525 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:07,542 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:07,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:07,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:07,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:07,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:07" (1/1) ... [2021-02-22 02:20:07,554 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67ca887a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:07, skipping insertion in model container [2021-02-22 02:20:07,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:07" (1/1) ... [2021-02-22 02:20:07,563 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:07,582 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:07,812 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/indp5f.c[589,602] [2021-02-22 02:20:07,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:07,872 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:07,891 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/indp5f.c[589,602] [2021-02-22 02:20:07,926 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:07,951 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:07,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:07 WrapperNode [2021-02-22 02:20:07,952 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:07,953 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:07,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:07,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:07,969 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:07" (1/1) ... [2021-02-22 02:20:07,970 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:07" (1/1) ... [2021-02-22 02:20:07,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:07" (1/1) ... [2021-02-22 02:20:07,980 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:07" (1/1) ... [2021-02-22 02:20:07,990 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:07" (1/1) ... [2021-02-22 02:20:07,997 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:07" (1/1) ... [2021-02-22 02:20:07,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:07" (1/1) ... [2021-02-22 02:20:08,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:08,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:08,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:08,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:08,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:07" (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 02:20:08,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:20:08,116 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:20:08,117 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:08,117 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:08,118 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:20:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:20:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:08,119 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:08,120 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:08,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:08,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:08,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:08,640 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-22 02:20:08,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:08 BoogieIcfgContainer [2021-02-22 02:20:08,644 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:08,646 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:08,646 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:08,651 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:08,651 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:07" (1/3) ... [2021-02-22 02:20:08,657 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ca88cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:08, skipping insertion in model container [2021-02-22 02:20:08,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:07" (2/3) ... [2021-02-22 02:20:08,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67ca88cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:08, skipping insertion in model container [2021-02-22 02:20:08,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:08" (3/3) ... [2021-02-22 02:20:08,660 INFO L111 eAbstractionObserver]: Analyzing ICFG indp5f.c [2021-02-22 02:20:08,667 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:08,672 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:08,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:08,732 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:08,733 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:08,733 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:08,733 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:08,733 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:08,733 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:08,734 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:08,734 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:08,762 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-02-22 02:20:08,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 02:20:08,780 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:08,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:20:08,781 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:08,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:08,788 INFO L82 PathProgramCache]: Analyzing trace with hash -1100068675, now seen corresponding path program 1 times [2021-02-22 02:20:08,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:08,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [715168737] [2021-02-22 02:20:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:08,891 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:09,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:09,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:09,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:09,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:09,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:09,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:09,290 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:09,291 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:09,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:09,306 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:09,309 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:09,325 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 02:20:09,327 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [715168737] [2021-02-22 02:20:09,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:09,330 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:20:09,330 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993637167] [2021-02-22 02:20:09,337 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:20:09,337 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:09,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:20:09,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:09,358 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2021-02-22 02:20:09,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:09,731 INFO L93 Difference]: Finished difference Result 149 states and 172 transitions. [2021-02-22 02:20:09,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:20:09,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-22 02:20:09,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:09,743 INFO L225 Difference]: With dead ends: 149 [2021-02-22 02:20:09,743 INFO L226 Difference]: Without dead ends: 73 [2021-02-22 02:20:09,747 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 02:20:09,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-22 02:20:09,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-22 02:20:09,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-22 02:20:09,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-22 02:20:09,800 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 42 [2021-02-22 02:20:09,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:09,801 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-22 02:20:09,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:20:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-22 02:20:09,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 02:20:09,803 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:09,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:20:09,804 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:09,804 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:09,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:09,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1086735486, now seen corresponding path program 1 times [2021-02-22 02:20:09,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:09,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853441635] [2021-02-22 02:20:09,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:09,809 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:09,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:09,892 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:09,893 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:09,897 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:09,898 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:20:09,913 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:09,914 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:20:09,925 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:09,926 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:09,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:10,016 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:10,017 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:10,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:10,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:10,025 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:10,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:10,030 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 02:20:10,030 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853441635] [2021-02-22 02:20:10,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:10,031 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:20:10,031 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947362379] [2021-02-22 02:20:10,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:20:10,032 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:10,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:20:10,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:20:10,034 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 5 states. [2021-02-22 02:20:10,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:10,399 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2021-02-22 02:20:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:20:10,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-22 02:20:10,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:10,402 INFO L225 Difference]: With dead ends: 143 [2021-02-22 02:20:10,403 INFO L226 Difference]: Without dead ends: 103 [2021-02-22 02:20:10,404 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 02:20:10,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-02-22 02:20:10,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 78. [2021-02-22 02:20:10,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2021-02-22 02:20:10,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 82 transitions. [2021-02-22 02:20:10,423 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 82 transitions. Word has length 42 [2021-02-22 02:20:10,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:10,423 INFO L480 AbstractCegarLoop]: Abstraction has 78 states and 82 transitions. [2021-02-22 02:20:10,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:20:10,424 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 82 transitions. [2021-02-22 02:20:10,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-02-22 02:20:10,458 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:10,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:20:10,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:10,463 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:10,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:10,463 INFO L82 PathProgramCache]: Analyzing trace with hash -405046525, now seen corresponding path program 1 times [2021-02-22 02:20:10,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:10,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415580636] [2021-02-22 02:20:10,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:10,488 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:10,503 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:20:10,509 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:10,513 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 31 [2021-02-22 02:20:10,520 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-22 02:20:10,535 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-22 02:20:10,544 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-22 02:20:10,546 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-22 02:20:10,548 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:20:10,572 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-22 02:20:10,573 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:10,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:20:10,603 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-22 02:20:10,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:10 BoogieIcfgContainer [2021-02-22 02:20:10,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:10,609 INFO L168 Benchmark]: Toolchain (without parser) took 3076.34 ms. Allocated memory was 152.0 MB in the beginning and 187.7 MB in the end (delta: 35.7 MB). Free memory was 127.1 MB in the beginning and 161.4 MB in the end (delta: -34.4 MB). Peak memory consumption was 2.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:10,610 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:10,613 INFO L168 Benchmark]: CACSL2BoogieTranslator took 405.63 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 115.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:10,616 INFO L168 Benchmark]: Boogie Preprocessor took 48.42 ms. Allocated memory is still 152.0 MB. Free memory was 115.9 MB in the beginning and 114.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:10,617 INFO L168 Benchmark]: RCFGBuilder took 641.43 ms. Allocated memory is still 152.0 MB. Free memory was 114.1 MB in the beginning and 92.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:10,623 INFO L168 Benchmark]: TraceAbstraction took 1958.12 ms. Allocated memory was 152.0 MB in the beginning and 187.7 MB in the end (delta: 35.7 MB). Free memory was 91.7 MB in the beginning and 161.4 MB in the end (delta: -69.8 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:10,629 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 405.63 ms. Allocated memory is still 152.0 MB. Free memory was 126.0 MB in the beginning and 115.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.42 ms. Allocated memory is still 152.0 MB. Free memory was 115.9 MB in the beginning and 114.1 MB in the end (delta: 1.8 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 641.43 ms. Allocated memory is still 152.0 MB. Free memory was 114.1 MB in the beginning and 92.1 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1958.12 ms. Allocated memory was 152.0 MB in the beginning and 187.7 MB in the end (delta: 35.7 MB). Free memory was 91.7 MB in the beginning and 161.4 MB in the end (delta: -69.8 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 15]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible 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 *a = malloc(sizeof(long long)*N); [L29] long long sum[1]; [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i