/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/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:46:54,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:46:54,792 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:46:54,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:46:54,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:46:54,852 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:46:54,856 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:46:54,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:46:54,875 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:46:54,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:46:54,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:46:54,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:46:54,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:46:54,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:46:54,889 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:46:54,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:46:54,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:46:54,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:46:54,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:46:54,910 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:46:54,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:46:54,915 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:46:54,916 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:46:54,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:46:54,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 18:46:54,939 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:46:54,940 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:46:54,941 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:46:54,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:46:54,969 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:46:54,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:46:54,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:46:54,975 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:46:54,975 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:46:54,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:46:54,975 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:46:54,976 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:46:54,976 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:46:54,976 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:46:54,977 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:46:54,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:46:54,978 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:46:54,978 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:46:54,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:46:54,979 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:46:54,979 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:46:54,979 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:46:54,979 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:46:54,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:46:54,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:46:54,980 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:46:54,980 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:46:55,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:46:55,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:46:55,454 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:46:55,456 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:46:55,457 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:46:55,458 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c [2021-02-23 18:46:55,530 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30dea89a1/252e2970a9dc45bdab78aca0f2fd2584/FLAG5f70e6d00 [2021-02-23 18:46:56,189 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:46:56,190 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ifeqn2f.c [2021-02-23 18:46:56,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30dea89a1/252e2970a9dc45bdab78aca0f2fd2584/FLAG5f70e6d00 [2021-02-23 18:46:56,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/30dea89a1/252e2970a9dc45bdab78aca0f2fd2584 [2021-02-23 18:46:56,521 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:46:56,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:46:56,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:56,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:46:56,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:46:56,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:56" (1/1) ... [2021-02-23 18:46:56,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@115cd866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:56, skipping insertion in model container [2021-02-23 18:46:56,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:46:56" (1/1) ... [2021-02-23 18:46:56,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:46:56,578 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:46:56,785 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/ifeqn2f.c[590,603] [2021-02-23 18:46:56,805 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:56,817 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:46:56,835 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/ifeqn2f.c[590,603] [2021-02-23 18:46:56,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:46:56,866 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:46:56,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:56 WrapperNode [2021-02-23 18:46:56,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:46:56,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:46:56,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:46:56,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:46:56,884 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:56" (1/1) ... [2021-02-23 18:46:56,884 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:56" (1/1) ... [2021-02-23 18:46:56,895 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:56" (1/1) ... [2021-02-23 18:46:56,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:56" (1/1) ... [2021-02-23 18:46:56,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:56" (1/1) ... [2021-02-23 18:46:56,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:56" (1/1) ... [2021-02-23 18:46:56,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:56" (1/1) ... [2021-02-23 18:46:56,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:46:56,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:46:56,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:46:56,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:46:56,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:56" (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 [2021-02-23 18:46:57,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:46:57,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:46:57,056 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:46:57,056 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 18:46:57,056 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 18:46:57,056 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:46:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:46:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:46:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:46:57,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:46:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 18:46:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 18:46:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:46:57,058 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:46:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:46:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:46:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:46:57,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:46:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:46:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:46:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:46:57,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:46:57,726 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:46:57,727 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-23 18:46:57,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:57 BoogieIcfgContainer [2021-02-23 18:46:57,729 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:46:57,731 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:46:57,732 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:46:57,736 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:46:57,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:46:56" (1/3) ... [2021-02-23 18:46:57,737 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f81383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:57, skipping insertion in model container [2021-02-23 18:46:57,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:46:56" (2/3) ... [2021-02-23 18:46:57,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71f81383 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:46:57, skipping insertion in model container [2021-02-23 18:46:57,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:46:57" (3/3) ... [2021-02-23 18:46:57,740 INFO L111 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2021-02-23 18:46:57,748 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:46:57,754 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:46:57,775 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:46:57,804 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:46:57,804 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:46:57,804 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:46:57,804 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:46:57,805 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:46:57,805 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:46:57,805 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:46:57,805 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:46:57,824 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2021-02-23 18:46:57,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:46:57,836 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:57,837 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] [2021-02-23 18:46:57,837 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:57,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:57,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1172258344, now seen corresponding path program 1 times [2021-02-23 18:46:57,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:57,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1119514695] [2021-02-23 18:46:57,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:57,942 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:58,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:58,084 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:58,086 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:58,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:58,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:46:58,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:58,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:58,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:58,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-23 18:46:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:46:58,193 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:46:58,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:46:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:46:58,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1119514695] [2021-02-23 18:46:58,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:46:58,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:46:58,210 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823820082] [2021-02-23 18:46:58,219 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:46:58,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:46:58,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:46:58,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:46:58,240 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 3 states. [2021-02-23 18:46:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:46:58,530 INFO L93 Difference]: Finished difference Result 119 states and 138 transitions. [2021-02-23 18:46:58,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:46:58,532 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-23 18:46:58,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:46:58,542 INFO L225 Difference]: With dead ends: 119 [2021-02-23 18:46:58,542 INFO L226 Difference]: Without dead ends: 63 [2021-02-23 18:46:58,546 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 [2021-02-23 18:46:58,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-02-23 18:46:58,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2021-02-23 18:46:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2021-02-23 18:46:58,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2021-02-23 18:46:58,609 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 38 [2021-02-23 18:46:58,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:46:58,610 INFO L480 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2021-02-23 18:46:58,610 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:46:58,611 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2021-02-23 18:46:58,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 18:46:58,614 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:46:58,614 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] [2021-02-23 18:46:58,615 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:46:58,615 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:46:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:46:58,616 INFO L82 PathProgramCache]: Analyzing trace with hash -2126496055, now seen corresponding path program 1 times [2021-02-23 18:46:58,616 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:46:58,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1914736134] [2021-02-23 18:46:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:46:58,632 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:46:58,694 WARN L167 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2021-02-23 18:46:58,694 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:46:58,699 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:46:58,723 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2021-02-23 18:46:58,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:46:58 BoogieIcfgContainer [2021-02-23 18:46:58,723 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:46:58,726 INFO L168 Benchmark]: Toolchain (without parser) took 2201.42 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 82.8 MB in the end (delta: 44.3 MB). Peak memory consumption was 43.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:58,727 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory was 124.2 MB in the beginning and 124.1 MB in the end (delta: 101.5 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:46:58,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:58,729 INFO L168 Benchmark]: Boogie Preprocessor took 57.27 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:58,730 INFO L168 Benchmark]: RCFGBuilder took 802.90 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 131.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:58,731 INFO L168 Benchmark]: TraceAbstraction took 992.21 ms. Allocated memory is still 151.0 MB. Free memory was 130.5 MB in the beginning and 82.8 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.2 MB. Max. memory is 8.0 GB. [2021-02-23 18:46:58,735 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 151.0 MB. Free memory was 124.2 MB in the beginning and 124.1 MB in the end (delta: 101.5 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 321.42 ms. Allocated memory is still 151.0 MB. Free memory was 125.9 MB in the beginning and 115.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.27 ms. Allocated memory is still 151.0 MB. Free memory was 115.9 MB in the beginning and 114.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 802.90 ms. Allocated memory is still 151.0 MB. Free memory was 114.2 MB in the beginning and 131.0 MB in the end (delta: -16.8 MB). Peak memory consumption was 20.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 992.21 ms. Allocated memory is still 151.0 MB. Free memory was 130.5 MB in the beginning and 82.8 MB in the end (delta: 47.7 MB). Peak memory consumption was 47.2 MB. 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 *b = malloc(sizeof(long long)*N); [L31] i=0 [L31] COND FALSE !(i