/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/array-fpi/s42iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 00:16:14,932 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 00:16:14,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 00:16:15,000 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-24 00:16:15,001 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-24 00:16:15,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-24 00:16:15,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-24 00:16:15,017 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-24 00:16:15,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-24 00:16:15,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-24 00:16:15,029 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-24 00:16:15,031 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-24 00:16:15,031 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 00:16:15,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 00:16:15,037 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 00:16:15,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 00:16:15,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 00:16:15,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 00:16:15,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 00:16:15,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 00:16:15,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 00:16:15,094 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 00:16:15,095 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 00:16:15,096 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 00:16:15,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-24 00:16:15,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-24 00:16:15,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-24 00:16:15,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-24 00:16:15,109 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-24 00:16:15,111 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-24 00:16:15,111 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-24 00:16:15,112 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-24 00:16:15,114 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-24 00:16:15,115 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-24 00:16:15,116 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-24 00:16:15,117 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-24 00:16:15,118 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-24 00:16:15,118 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-24 00:16:15,118 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 00:16:15,119 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 00:16:15,120 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 00:16:15,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-24 00:16:15,149 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 00:16:15,149 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 00:16:15,153 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 00:16:15,153 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 00:16:15,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 00:16:15,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 00:16:15,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 00:16:15,154 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 00:16:15,154 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 00:16:15,155 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 00:16:15,156 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 00:16:15,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 00:16:15,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 00:16:15,157 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 00:16:15,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 00:16:15,157 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 00:16:15,157 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 00:16:15,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 00:16:15,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 00:16:15,158 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 00:16:15,158 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 00:16:15,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 00:16:15,159 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2021-02-24 00:16:15,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 00:16:15,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 00:16:15,579 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 00:16:15,581 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 00:16:15,582 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 00:16:15,583 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s42iff.c [2021-02-24 00:16:15,667 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c97fa39/8a2f0f10725d460e8633721aa4ec9237/FLAG6875ea80d [2021-02-24 00:16:16,255 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 00:16:16,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s42iff.c [2021-02-24 00:16:16,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c97fa39/8a2f0f10725d460e8633721aa4ec9237/FLAG6875ea80d [2021-02-24 00:16:16,577 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/84c97fa39/8a2f0f10725d460e8633721aa4ec9237 [2021-02-24 00:16:16,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 00:16:16,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 00:16:16,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:16,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 00:16:16,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 00:16:16,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:16" (1/1) ... [2021-02-24 00:16:16,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3257fc84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:16, skipping insertion in model container [2021-02-24 00:16:16,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 12:16:16" (1/1) ... [2021-02-24 00:16:16,629 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 00:16:16,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 00:16:16,839 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/s42iff.c[589,602] [2021-02-24 00:16:16,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:16,873 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 00:16:16,887 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/s42iff.c[589,602] [2021-02-24 00:16:16,903 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 00:16:16,924 INFO L208 MainTranslator]: Completed translation [2021-02-24 00:16:16,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:16 WrapperNode [2021-02-24 00:16:16,925 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 00:16:16,926 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 00:16:16,926 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 00:16:16,926 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 00:16:16,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:16" (1/1) ... [2021-02-24 00:16:16,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:16" (1/1) ... [2021-02-24 00:16:16,966 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:16" (1/1) ... [2021-02-24 00:16:16,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:16" (1/1) ... [2021-02-24 00:16:16,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:16" (1/1) ... [2021-02-24 00:16:16,985 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:16" (1/1) ... [2021-02-24 00:16:16,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:16" (1/1) ... [2021-02-24 00:16:16,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 00:16:16,996 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 00:16:16,996 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 00:16:16,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 00:16:16,997 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:16" (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 [2021-02-24 00:16:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 00:16:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 00:16:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 00:16:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-24 00:16:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 00:16:17,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 00:16:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 00:16:17,155 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 00:16:17,155 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 00:16:17,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 00:16:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-24 00:16:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 00:16:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 00:16:17,157 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-24 00:16:17,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 00:16:17,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-24 00:16:17,158 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 00:16:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 00:16:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 00:16:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 00:16:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 00:16:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 00:16:17,594 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 00:16:17,594 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-24 00:16:17,601 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:17 BoogieIcfgContainer [2021-02-24 00:16:17,601 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 00:16:17,603 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 00:16:17,603 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 00:16:17,607 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 00:16:17,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 12:16:16" (1/3) ... [2021-02-24 00:16:17,608 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37750166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:17, skipping insertion in model container [2021-02-24 00:16:17,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 12:16:16" (2/3) ... [2021-02-24 00:16:17,609 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37750166 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 12:16:17, skipping insertion in model container [2021-02-24 00:16:17,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 12:16:17" (3/3) ... [2021-02-24 00:16:17,611 INFO L111 eAbstractionObserver]: Analyzing ICFG s42iff.c [2021-02-24 00:16:17,617 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 00:16:17,622 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 00:16:17,642 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 00:16:17,669 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 00:16:17,669 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 00:16:17,670 INFO L378 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2021-02-24 00:16:17,670 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 00:16:17,670 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 00:16:17,670 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 00:16:17,670 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 00:16:17,670 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 00:16:17,689 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2021-02-24 00:16:17,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:16:17,701 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:17,702 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] [2021-02-24 00:16:17,703 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:17,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:17,710 INFO L82 PathProgramCache]: Analyzing trace with hash -1439408661, now seen corresponding path program 1 times [2021-02-24 00:16:17,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:17,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [250220022] [2021-02-24 00:16:17,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:17,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:17,962 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:17,964 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:17,965 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:18,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:18,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:18,097 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:16:18,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:18,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:18,108 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:18,118 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [250220022] [2021-02-24 00:16:18,121 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:18,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 00:16:18,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832984698] [2021-02-24 00:16:18,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 00:16:18,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:18,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 00:16:18,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 00:16:18,154 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2021-02-24 00:16:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:18,392 INFO L93 Difference]: Finished difference Result 149 states and 168 transitions. [2021-02-24 00:16:18,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 00:16:18,394 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2021-02-24 00:16:18,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:18,404 INFO L225 Difference]: With dead ends: 149 [2021-02-24 00:16:18,404 INFO L226 Difference]: Without dead ends: 73 [2021-02-24 00:16:18,408 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 [2021-02-24 00:16:18,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-02-24 00:16:18,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-02-24 00:16:18,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2021-02-24 00:16:18,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2021-02-24 00:16:18,468 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 38 [2021-02-24 00:16:18,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:18,469 INFO L480 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2021-02-24 00:16:18,470 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 00:16:18,470 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2021-02-24 00:16:18,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-24 00:16:18,472 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:18,472 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] [2021-02-24 00:16:18,472 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 00:16:18,473 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:18,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:18,474 INFO L82 PathProgramCache]: Analyzing trace with hash -415145042, now seen corresponding path program 1 times [2021-02-24 00:16:18,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:18,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853396077] [2021-02-24 00:16:18,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:18,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:18,551 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:18,552 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:18,553 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:18,554 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 00:16:18,565 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:18,566 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 00:16:18,573 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:18,574 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:18,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 00:16:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:18,616 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:18,617 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:18,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-02-24 00:16:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 00:16:18,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 00:16:18,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 00:16:18,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 00:16:18,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853396077] [2021-02-24 00:16:18,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 00:16:18,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 00:16:18,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396989009] [2021-02-24 00:16:18,643 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 00:16:18,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 00:16:18,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 00:16:18,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 00:16:18,645 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 5 states. [2021-02-24 00:16:18,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 00:16:18,912 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2021-02-24 00:16:18,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 00:16:18,913 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2021-02-24 00:16:18,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 00:16:18,916 INFO L225 Difference]: With dead ends: 147 [2021-02-24 00:16:18,916 INFO L226 Difference]: Without dead ends: 107 [2021-02-24 00:16:18,918 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 [2021-02-24 00:16:18,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2021-02-24 00:16:18,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 76. [2021-02-24 00:16:18,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2021-02-24 00:16:18,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2021-02-24 00:16:18,938 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 38 [2021-02-24 00:16:18,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 00:16:18,939 INFO L480 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2021-02-24 00:16:18,939 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 00:16:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2021-02-24 00:16:18,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-02-24 00:16:18,942 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 00:16:18,942 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-24 00:16:18,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 00:16:18,943 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 00:16:18,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 00:16:18,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1781170039, now seen corresponding path program 1 times [2021-02-24 00:16:18,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 00:16:18,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1277506436] [2021-02-24 00:16:18,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 00:16:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:19,036 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:19,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-24 00:16:19,122 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-24 00:16:19,188 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-24 00:16:19,188 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-24 00:16:19,188 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 00:16:19,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 12:16:19 BoogieIcfgContainer [2021-02-24 00:16:19,305 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 00:16:19,308 INFO L168 Benchmark]: Toolchain (without parser) took 2717.37 ms. Allocated memory is still 152.0 MB. Free memory was 135.8 MB in the beginning and 55.5 MB in the end (delta: 80.3 MB). Peak memory consumption was 79.5 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:19,309 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 00:16:19,311 INFO L168 Benchmark]: CACSL2BoogieTranslator took 316.00 ms. Allocated memory is still 152.0 MB. Free memory was 134.8 MB in the beginning and 124.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:19,314 INFO L168 Benchmark]: Boogie Preprocessor took 69.45 ms. Allocated memory is still 152.0 MB. Free memory was 124.6 MB in the beginning and 122.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:19,315 INFO L168 Benchmark]: RCFGBuilder took 604.88 ms. Allocated memory is still 152.0 MB. Free memory was 122.6 MB in the beginning and 114.9 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:19,316 INFO L168 Benchmark]: TraceAbstraction took 1702.62 ms. Allocated memory is still 152.0 MB. Free memory was 114.3 MB in the beginning and 55.5 MB in the end (delta: 58.8 MB). Peak memory consumption was 59.9 MB. Max. memory is 8.0 GB. [2021-02-24 00:16:19,327 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 152.0 MB. Free memory is still 125.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 316.00 ms. Allocated memory is still 152.0 MB. Free memory was 134.8 MB in the beginning and 124.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.45 ms. Allocated memory is still 152.0 MB. Free memory was 124.6 MB in the beginning and 122.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 604.88 ms. Allocated memory is still 152.0 MB. Free memory was 122.6 MB in the beginning and 114.9 MB in the end (delta: 7.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1702.62 ms. Allocated memory is still 152.0 MB. Free memory was 114.3 MB in the beginning and 55.5 MB in the end (delta: 58.8 MB). Peak memory consumption was 59.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() VAL [\old(N)=0, __VERIFIER_nondet_int()=1, N=1] [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; VAL [\old(N)=0, N=1] [L28] long long sum[1]; VAL [\old(N)=0, N=1, sum={3:0}] [L29] int *a = malloc(sizeof(int)*N); VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L31] sum[0] = 1 VAL [\old(N)=0, a={-1:0}, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L32] COND TRUE i