/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/s12iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-07 01:56:35,738 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-07 01:56:35,742 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-07 01:56:35,800 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-07 01:56:35,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-07 01:56:35,806 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-07 01:56:35,810 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-07 01:56:35,818 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-07 01:56:35,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-07 01:56:35,827 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-07 01:56:35,828 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-07 01:56:35,830 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-07 01:56:35,830 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-07 01:56:35,833 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-07 01:56:35,835 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-07 01:56:35,837 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-07 01:56:35,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-07 01:56:35,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-07 01:56:35,848 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-07 01:56:35,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-07 01:56:35,858 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-07 01:56:35,859 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-07 01:56:35,861 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-07 01:56:35,863 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-07 01:56:35,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-07 01:56:35,876 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-07 01:56:35,877 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-07 01:56:35,879 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-07 01:56:35,880 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-07 01:56:35,881 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-07 01:56:35,881 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-07 01:56:35,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-07 01:56:35,882 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-07 01:56:35,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-07 01:56:35,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-07 01:56:35,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-07 01:56:35,886 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-11-07 01:56:35,921 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-07 01:56:35,921 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-07 01:56:35,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-07 01:56:35,926 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-07 01:56:35,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-07 01:56:35,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-07 01:56:35,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-07 01:56:35,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-07 01:56:35,927 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-07 01:56:35,927 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-07 01:56:35,928 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-07 01:56:35,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-07 01:56:35,928 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-07 01:56:35,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-07 01:56:35,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-07 01:56:35,929 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-11-07 01:56:35,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-07 01:56:35,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-07 01:56:35,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-07 01:56:35,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-07 01:56:35,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-11-07 01:56:35,930 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-07 01:56:35,931 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-07 01:56:36,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-07 01:56:36,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-07 01:56:36,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-07 01:56:36,401 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-07 01:56:36,401 INFO L275 PluginConnector]: CDTParser initialized [2020-11-07 01:56:36,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s12iff.c [2020-11-07 01:56:36,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69dda4d64/8a67a95d30cd4ec18a8b56081a83e542/FLAG8f2ad6111 [2020-11-07 01:56:37,160 INFO L306 CDTParser]: Found 1 translation units. [2020-11-07 01:56:37,161 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s12iff.c [2020-11-07 01:56:37,169 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69dda4d64/8a67a95d30cd4ec18a8b56081a83e542/FLAG8f2ad6111 [2020-11-07 01:56:37,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69dda4d64/8a67a95d30cd4ec18a8b56081a83e542 [2020-11-07 01:56:37,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-07 01:56:37,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-07 01:56:37,523 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:37,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-07 01:56:37,527 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-07 01:56:37,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d039238 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37, skipping insertion in model container [2020-11-07 01:56:37,531 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,539 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-07 01:56:37,555 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-07 01:56:37,734 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:37,744 INFO L203 MainTranslator]: Completed pre-run [2020-11-07 01:56:37,775 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-07 01:56:37,797 INFO L208 MainTranslator]: Completed translation [2020-11-07 01:56:37,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37 WrapperNode [2020-11-07 01:56:37,798 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-07 01:56:37,800 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-07 01:56:37,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-07 01:56:37,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-07 01:56:37,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,867 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (1/1) ... [2020-11-07 01:56:37,869 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-07 01:56:37,870 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-07 01:56:37,871 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-07 01:56:37,871 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-07 01:56:37,872 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (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 [2020-11-07 01:56:37,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-07 01:56:37,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-07 01:56:37,944 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-07 01:56:37,944 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-11-07 01:56:37,945 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-11-07 01:56:37,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-07 01:56:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-07 01:56:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-07 01:56:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-07 01:56:37,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-07 01:56:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-11-07 01:56:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-11-07 01:56:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-07 01:56:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-07 01:56:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-07 01:56:37,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-07 01:56:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-07 01:56:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-07 01:56:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-07 01:56:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-07 01:56:37,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-07 01:56:37,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-07 01:56:38,633 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-07 01:56:38,633 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-11-07 01:56:38,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:38 BoogieIcfgContainer [2020-11-07 01:56:38,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-07 01:56:38,642 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-07 01:56:38,642 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-07 01:56:38,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-07 01:56:38,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:56:37" (1/3) ... [2020-11-07 01:56:38,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edee929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:38, skipping insertion in model container [2020-11-07 01:56:38,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:56:37" (2/3) ... [2020-11-07 01:56:38,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6edee929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:56:38, skipping insertion in model container [2020-11-07 01:56:38,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:56:38" (3/3) ... [2020-11-07 01:56:38,651 INFO L111 eAbstractionObserver]: Analyzing ICFG s12iff.c [2020-11-07 01:56:38,671 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-07 01:56:38,675 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-07 01:56:38,690 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-07 01:56:38,731 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-07 01:56:38,731 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-07 01:56:38,732 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-11-07 01:56:38,732 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-07 01:56:38,732 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-07 01:56:38,732 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-07 01:56:38,732 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-07 01:56:38,732 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-07 01:56:38,758 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states. [2020-11-07 01:56:38,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 01:56:38,771 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:38,772 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] [2020-11-07 01:56:38,772 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:38,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:38,783 INFO L82 PathProgramCache]: Analyzing trace with hash -525896098, now seen corresponding path program 1 times [2020-11-07 01:56:38,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:38,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253600115] [2020-11-07 01:56:38,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:38,872 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:39,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:39,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:39,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:39,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:56:39,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253600115] [2020-11-07 01:56:39,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:39,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-07 01:56:39,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397378550] [2020-11-07 01:56:39,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-07 01:56:39,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:39,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-07 01:56:39,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-07 01:56:39,260 INFO L87 Difference]: Start difference. First operand 89 states. Second operand 3 states. [2020-11-07 01:56:39,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:39,562 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2020-11-07 01:56:39,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-07 01:56:39,564 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2020-11-07 01:56:39,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:39,579 INFO L225 Difference]: With dead ends: 153 [2020-11-07 01:56:39,580 INFO L226 Difference]: Without dead ends: 74 [2020-11-07 01:56:39,588 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 [2020-11-07 01:56:39,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-11-07 01:56:39,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-11-07 01:56:39,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-11-07 01:56:39,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2020-11-07 01:56:39,690 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 39 [2020-11-07 01:56:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:39,692 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2020-11-07 01:56:39,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-07 01:56:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2020-11-07 01:56:39,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-07 01:56:39,697 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:39,697 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] [2020-11-07 01:56:39,699 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-07 01:56:39,699 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:39,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:39,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2126155324, now seen corresponding path program 1 times [2020-11-07 01:56:39,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:39,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028704983] [2020-11-07 01:56:39,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:39,717 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:39,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-07 01:56:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:39,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-11-07 01:56:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-07 01:56:39,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-07 01:56:39,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028704983] [2020-11-07 01:56:39,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-07 01:56:39,886 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-07 01:56:39,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096204531] [2020-11-07 01:56:39,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-07 01:56:39,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-11-07 01:56:39,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-07 01:56:39,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-07 01:56:39,888 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 5 states. [2020-11-07 01:56:40,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-07 01:56:40,164 INFO L93 Difference]: Finished difference Result 149 states and 161 transitions. [2020-11-07 01:56:40,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-07 01:56:40,165 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-07 01:56:40,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-07 01:56:40,167 INFO L225 Difference]: With dead ends: 149 [2020-11-07 01:56:40,168 INFO L226 Difference]: Without dead ends: 108 [2020-11-07 01:56:40,169 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 [2020-11-07 01:56:40,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-07 01:56:40,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 77. [2020-11-07 01:56:40,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-07 01:56:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-11-07 01:56:40,187 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 39 [2020-11-07 01:56:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-07 01:56:40,187 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-11-07 01:56:40,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-07 01:56:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-11-07 01:56:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-07 01:56:40,190 INFO L414 BasicCegarLoop]: Found error trace [2020-11-07 01:56:40,190 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] [2020-11-07 01:56:40,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-07 01:56:40,191 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-07 01:56:40,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-07 01:56:40,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1592075576, now seen corresponding path program 1 times [2020-11-07 01:56:40,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-11-07 01:56:40,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093280118] [2020-11-07 01:56:40,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-07 01:56:40,256 INFO L120 Accelerator]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2020-11-07 01:56:40,258 INFO L328 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-11-07 01:56:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:40,307 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-07 01:56:40,362 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-07 01:56:40,403 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-11-07 01:56:40,403 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-07 01:56:40,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-07 01:56:40,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:56:40 BoogieIcfgContainer [2020-11-07 01:56:40,424 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-07 01:56:40,426 INFO L168 Benchmark]: Toolchain (without parser) took 2909.48 ms. Allocated memory is still 166.7 MB. Free memory was 143.6 MB in the beginning and 78.9 MB in the end (delta: 64.6 MB). Peak memory consumption was 65.6 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:40,428 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 103.0 MB in the beginning and 102.9 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-07 01:56:40,429 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.98 ms. Allocated memory is still 166.7 MB. Free memory was 142.8 MB in the beginning and 132.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:40,430 INFO L168 Benchmark]: Boogie Preprocessor took 70.01 ms. Allocated memory is still 166.7 MB. Free memory was 132.9 MB in the beginning and 131.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:40,431 INFO L168 Benchmark]: RCFGBuilder took 767.72 ms. Allocated memory is still 166.7 MB. Free memory was 131.0 MB in the beginning and 143.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:40,432 INFO L168 Benchmark]: TraceAbstraction took 1781.75 ms. Allocated memory is still 166.7 MB. Free memory was 143.0 MB in the beginning and 78.9 MB in the end (delta: 64.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 8.0 GB. [2020-11-07 01:56:40,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory was 103.0 MB in the beginning and 102.9 MB in the end (delta: 131.1 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 275.98 ms. Allocated memory is still 166.7 MB. Free memory was 142.8 MB in the beginning and 132.9 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 70.01 ms. Allocated memory is still 166.7 MB. Free memory was 132.9 MB in the beginning and 131.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 767.72 ms. Allocated memory is still 166.7 MB. Free memory was 131.0 MB in the beginning and 143.6 MB in the end (delta: -12.6 MB). Peak memory consumption was 17.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1781.75 ms. Allocated memory is still 166.7 MB. Free memory was 143.0 MB in the beginning and 78.9 MB in the end (delta: 64.1 MB). Peak memory consumption was 65.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i