/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/res1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:20:14,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:20:14,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:20:15,011 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:20:15,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-22 02:20:15,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-22 02:20:15,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-22 02:20:15,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-22 02:20:15,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-22 02:20:15,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-22 02:20:15,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-22 02:20:15,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-22 02:20:15,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-22 02:20:15,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-22 02:20:15,052 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-22 02:20:15,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-22 02:20:15,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-22 02:20:15,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:20:15,084 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:20:15,085 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:20:15,086 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 02:20:15,102 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:20:15,103 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:20:15,108 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:20:15,108 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:20:15,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:20:15,109 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:20:15,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:20:15,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:20:15,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:20:15,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:20:15,111 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:20:15,111 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:20:15,111 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:20:15,111 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:20:15,112 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:20:15,112 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:20:15,112 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:20:15,112 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:20:15,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:20:15,113 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:20:15,113 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:20:15,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:20:15,114 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:20:15,114 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:20:15,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:20:15,583 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:20:15,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:20:15,588 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:20:15,589 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:20:15,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res1f.c [2021-02-22 02:20:15,685 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9803aaf69/d303a2d295a94c13a8c55f1dd7a47b7a/FLAG277fb05fb [2021-02-22 02:20:16,314 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:20:16,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/res1f.c [2021-02-22 02:20:16,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9803aaf69/d303a2d295a94c13a8c55f1dd7a47b7a/FLAG277fb05fb [2021-02-22 02:20:16,631 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9803aaf69/d303a2d295a94c13a8c55f1dd7a47b7a [2021-02-22 02:20:16,636 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:20:16,652 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:20:16,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:16,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:20:16,662 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:20:16,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:16" (1/1) ... [2021-02-22 02:20:16,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c53f738 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:16, skipping insertion in model container [2021-02-22 02:20:16,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:20:16" (1/1) ... [2021-02-22 02:20:16,675 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:20:16,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:20:16,898 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/res1f.c[588,601] [2021-02-22 02:20:16,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:16,952 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:20:16,971 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/res1f.c[588,601] [2021-02-22 02:20:17,006 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:20:17,028 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:20:17,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:17 WrapperNode [2021-02-22 02:20:17,029 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:20:17,030 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:20:17,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:20:17,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:20:17,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:17" (1/1) ... [2021-02-22 02:20:17,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:17" (1/1) ... [2021-02-22 02:20:17,071 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:17" (1/1) ... [2021-02-22 02:20:17,071 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:17" (1/1) ... [2021-02-22 02:20:17,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:17" (1/1) ... [2021-02-22 02:20:17,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:17" (1/1) ... [2021-02-22 02:20:17,110 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:17" (1/1) ... [2021-02-22 02:20:17,118 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:20:17,119 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:20:17,120 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:20:17,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:20:17,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:17" (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 02:20:17,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:20:17,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:20:17,257 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:20:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-22 02:20:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:20:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:20:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:20:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:20:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:20:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:20:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-22 02:20:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:20:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:20:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-22 02:20:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:20:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-22 02:20:17,262 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:20:17,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:20:17,264 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:20:17,266 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:20:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:20:17,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:20:17,825 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:20:17,825 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-22 02:20:17,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:17 BoogieIcfgContainer [2021-02-22 02:20:17,827 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:20:17,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:20:17,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:20:17,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:20:17,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:20:16" (1/3) ... [2021-02-22 02:20:17,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db6970a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:17, skipping insertion in model container [2021-02-22 02:20:17,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:20:17" (2/3) ... [2021-02-22 02:20:17,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db6970a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:20:17, skipping insertion in model container [2021-02-22 02:20:17,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:20:17" (3/3) ... [2021-02-22 02:20:17,837 INFO L111 eAbstractionObserver]: Analyzing ICFG res1f.c [2021-02-22 02:20:17,844 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:20:17,850 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:20:17,871 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:20:17,897 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:20:17,897 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:20:17,897 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:20:17,897 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:20:17,898 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:20:17,898 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:20:17,898 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:20:17,898 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:20:17,915 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2021-02-22 02:20:17,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 02:20:17,926 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:17,927 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 02:20:17,927 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:17,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:17,934 INFO L82 PathProgramCache]: Analyzing trace with hash -1991564409, now seen corresponding path program 1 times [2021-02-22 02:20:17,943 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:17,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1260703456] [2021-02-22 02:20:17,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:18,033 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:18,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:18,245 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:18,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:18,248 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:18,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:18,375 WARN L202 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-22 02:20:18,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:18,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:18,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:18,432 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:18,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:18,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:18,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:18,441 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:18,486 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 02:20:18,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1260703456] [2021-02-22 02:20:18,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:18,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:20:18,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719431436] [2021-02-22 02:20:18,496 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:20:18,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:18,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:20:18,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:18,518 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 3 states. [2021-02-22 02:20:18,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:18,798 INFO L93 Difference]: Finished difference Result 137 states and 156 transitions. [2021-02-22 02:20:18,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:20:18,800 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 42 [2021-02-22 02:20:18,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:18,809 INFO L225 Difference]: With dead ends: 137 [2021-02-22 02:20:18,810 INFO L226 Difference]: Without dead ends: 67 [2021-02-22 02:20:18,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:20:18,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-02-22 02:20:18,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2021-02-22 02:20:18,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2021-02-22 02:20:18,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2021-02-22 02:20:18,867 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 42 [2021-02-22 02:20:18,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:18,868 INFO L480 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2021-02-22 02:20:18,868 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:20:18,869 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2021-02-22 02:20:18,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-22 02:20:18,870 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:18,871 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 02:20:18,871 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:20:18,871 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:18,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:18,872 INFO L82 PathProgramCache]: Analyzing trace with hash 749526049, now seen corresponding path program 1 times [2021-02-22 02:20:18,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:18,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1122488212] [2021-02-22 02:20:18,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:18,876 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:20:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:18,940 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:18,941 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:18,942 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:18,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:20:18,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:18,958 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-22 02:20:18,970 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:18,971 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:19,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:20:19,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:19,039 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,040 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:19,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-22 02:20:19,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:20:19,063 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,064 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:20:19,069 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 02:20:19,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1122488212] [2021-02-22 02:20:19,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:20:19,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-22 02:20:19,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420899651] [2021-02-22 02:20:19,074 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-22 02:20:19,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:20:19,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-22 02:20:19,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-22 02:20:19,077 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 5 states. [2021-02-22 02:20:19,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:20:19,393 INFO L93 Difference]: Finished difference Result 123 states and 132 transitions. [2021-02-22 02:20:19,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:20:19,393 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2021-02-22 02:20:19,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:20:19,395 INFO L225 Difference]: With dead ends: 123 [2021-02-22 02:20:19,396 INFO L226 Difference]: Without dead ends: 91 [2021-02-22 02:20:19,397 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 02:20:19,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-02-22 02:20:19,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 71. [2021-02-22 02:20:19,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2021-02-22 02:20:19,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 74 transitions. [2021-02-22 02:20:19,418 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 74 transitions. Word has length 42 [2021-02-22 02:20:19,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:20:19,419 INFO L480 AbstractCegarLoop]: Abstraction has 71 states and 74 transitions. [2021-02-22 02:20:19,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-22 02:20:19,419 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 74 transitions. [2021-02-22 02:20:19,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-02-22 02:20:19,422 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:20:19,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:20:19,423 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:20:19,423 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:20:19,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:20:19,424 INFO L82 PathProgramCache]: Analyzing trace with hash 558292563, now seen corresponding path program 1 times [2021-02-22 02:20:19,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:20:19,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080911381] [2021-02-22 02:20:19,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:20:19,451 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:19,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:20:19,494 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-02-22 02:20:19,510 WARN L141 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size [2021-02-22 02:20:19,527 WARN L147 QuantifierPusher]: treesize reduction 4, result has 76.5 percent of original size 13 [2021-02-22 02:20:19,533 WARN L141 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size [2021-02-22 02:20:19,536 WARN L147 QuantifierPusher]: treesize reduction 14, result has 68.2 percent of original size 30 [2021-02-22 02:20:19,537 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-02-22 02:20:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:19,614 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:19,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-22 02:20:19,665 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-22 02:20:19,741 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-22 02:20:19,742 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-22 02:20:19,744 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:20:19,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:20:19 BoogieIcfgContainer [2021-02-22 02:20:19,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:20:19,774 INFO L168 Benchmark]: Toolchain (without parser) took 3132.55 ms. Allocated memory is still 154.1 MB. Free memory was 129.4 MB in the beginning and 124.2 MB in the end (delta: 5.2 MB). Peak memory consumption was 7.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:19,775 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:19,777 INFO L168 Benchmark]: CACSL2BoogieTranslator took 372.65 ms. Allocated memory is still 154.1 MB. Free memory was 128.3 MB in the beginning and 118.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:19,778 INFO L168 Benchmark]: Boogie Preprocessor took 88.14 ms. Allocated memory is still 154.1 MB. Free memory was 118.3 MB in the beginning and 116.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:19,780 INFO L168 Benchmark]: RCFGBuilder took 708.02 ms. Allocated memory is still 154.1 MB. Free memory was 116.5 MB in the beginning and 95.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2021-02-22 02:20:19,785 INFO L168 Benchmark]: TraceAbstraction took 1941.60 ms. Allocated memory is still 154.1 MB. Free memory was 94.7 MB in the beginning and 124.2 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:20:19,795 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 154.1 MB. Free memory is still 128.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 372.65 ms. Allocated memory is still 154.1 MB. Free memory was 128.3 MB in the beginning and 118.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 88.14 ms. Allocated memory is still 154.1 MB. Free memory was 118.3 MB in the beginning and 116.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 708.02 ms. Allocated memory is still 154.1 MB. Free memory was 116.5 MB in the beginning and 95.0 MB in the end (delta: 21.5 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1941.60 ms. Allocated memory is still 154.1 MB. Free memory was 94.7 MB in the beginning and 124.2 MB in the end (delta: -29.5 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L30] int *b = malloc(sizeof(int)*N); [L32] sum[0] = 1 [L33] i=0 [L33] COND TRUE i