/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/s42iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:25:33,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:25:33,082 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:25:33,143 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:25:33,144 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:25:33,149 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:25:33,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:25:33,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:25:33,162 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:25:33,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:25:33,168 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:25:33,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:25:33,172 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:25:33,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:25:33,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:25:33,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:25:33,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:25:33,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:25:33,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:25:33,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:25:33,206 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:25:33,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:25:33,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:25:33,228 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:25:33,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:25:33,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:25:33,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:25:33,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:25:33,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:25:33,309 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:25:33,310 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:25:33,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:25:33,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:25:33,315 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:25:33,315 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:25:33,315 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:25:33,316 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:25:33,316 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:25:33,316 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:25:33,317 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:25:33,317 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:25:33,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:25:33,318 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:25:33,318 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:25:33,318 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:25:33,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:25:33,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:25:33,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:25:33,319 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:25:33,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:33,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:25:33,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:25:33,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:25:33,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:25:33,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:25:33,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:25:33,321 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:25:33,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:25:33,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:25:33,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:25:33,822 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:25:33,823 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:25:33,824 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:25:33,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s42iff.c [2021-02-21 16:25:33,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80eff2c88/8b484771ea5148c18df9e202c06ab2c8/FLAGa3778af17 [2021-02-21 16:25:34,566 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:25:34,567 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s42iff.c [2021-02-21 16:25:34,576 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80eff2c88/8b484771ea5148c18df9e202c06ab2c8/FLAGa3778af17 [2021-02-21 16:25:34,939 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80eff2c88/8b484771ea5148c18df9e202c06ab2c8 [2021-02-21 16:25:34,943 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:25:34,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:25:34,963 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:34,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:25:34,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:25:34,970 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:34" (1/1) ... [2021-02-21 16:25:34,972 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f0ee4ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:34, skipping insertion in model container [2021-02-21 16:25:34,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:34" (1/1) ... [2021-02-21 16:25:34,983 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:25:35,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:25:35,239 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] [2021-02-21 16:25:35,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:35,294 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:25:35,312 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] [2021-02-21 16:25:35,342 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:35,366 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:25:35,367 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:35 WrapperNode [2021-02-21 16:25:35,367 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:35,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:25:35,369 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:25:35,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:25:35,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:35" (1/1) ... [2021-02-21 16:25:35,384 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:35" (1/1) ... [2021-02-21 16:25:35,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:35" (1/1) ... [2021-02-21 16:25:35,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:35" (1/1) ... [2021-02-21 16:25:35,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:35" (1/1) ... [2021-02-21 16:25:35,409 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:35" (1/1) ... [2021-02-21 16:25:35,411 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:35" (1/1) ... [2021-02-21 16:25:35,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:25:35,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:25:35,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:25:35,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:25:35,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:35" (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 [2021-02-21 16:25:35,513 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:25:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:25:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:25:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:25:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:25:35,514 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:25:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:25:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:25:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:25:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:25:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:25:35,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:25:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:25:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:25:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:25:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:25:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:25:35,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:25:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:25:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:25:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:25:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:25:35,883 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:25:35,884 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 16:25:35,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:35 BoogieIcfgContainer [2021-02-21 16:25:35,886 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:25:35,888 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:25:35,888 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:25:35,893 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:25:35,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:34" (1/3) ... [2021-02-21 16:25:35,894 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a17fe67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:35, skipping insertion in model container [2021-02-21 16:25:35,894 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:35" (2/3) ... [2021-02-21 16:25:35,895 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a17fe67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:35, skipping insertion in model container [2021-02-21 16:25:35,895 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:35" (3/3) ... [2021-02-21 16:25:35,896 INFO L111 eAbstractionObserver]: Analyzing ICFG s42iff.c [2021-02-21 16:25:35,905 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:25:35,911 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:25:35,933 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:25:35,961 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:25:35,962 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:25:35,962 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:25:35,962 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:25:35,962 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:25:35,962 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:25:35,962 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:25:35,963 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:25:35,994 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2021-02-21 16:25:36,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 16:25:36,014 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:36,015 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] [2021-02-21 16:25:36,019 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:36,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:36,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1742232210, now seen corresponding path program 1 times [2021-02-21 16:25:36,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:36,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275431289] [2021-02-21 16:25:36,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:36,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:36,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:36,337 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:36,339 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:36,339 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:36,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:36,440 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:36,440 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:36,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:36,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:36,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:36,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:36,449 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:36,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:36,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:25:36,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275431289] [2021-02-21 16:25:36,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:36,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:25:36,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482007925] [2021-02-21 16:25:36,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:25:36,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:36,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:25:36,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:36,488 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2021-02-21 16:25:36,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:36,598 INFO L93 Difference]: Finished difference Result 62 states and 81 transitions. [2021-02-21 16:25:36,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:25:36,600 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-02-21 16:25:36,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:36,608 INFO L225 Difference]: With dead ends: 62 [2021-02-21 16:25:36,608 INFO L226 Difference]: Without dead ends: 29 [2021-02-21 16:25:36,612 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:36,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-02-21 16:25:36,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-02-21 16:25:36,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-21 16:25:36,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-02-21 16:25:36,654 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 23 [2021-02-21 16:25:36,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:36,654 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-02-21 16:25:36,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:25:36,655 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-02-21 16:25:36,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 16:25:36,656 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:36,656 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] [2021-02-21 16:25:36,656 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:25:36,657 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:36,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:36,658 INFO L82 PathProgramCache]: Analyzing trace with hash 416194299, now seen corresponding path program 1 times [2021-02-21 16:25:36,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:36,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727749814] [2021-02-21 16:25:36,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:36,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:36,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:36,746 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:36,746 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:36,756 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:36,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:25:36,772 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:36,773 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:36,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:36,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:36,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:36,849 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:36,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:36,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:36,871 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:36,871 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:36,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:25:36,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727749814] [2021-02-21 16:25:36,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:36,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:25:36,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853441635] [2021-02-21 16:25:36,880 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:25:36,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:36,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:25:36,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:36,884 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 5 states. [2021-02-21 16:25:37,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:37,099 INFO L93 Difference]: Finished difference Result 51 states and 63 transitions. [2021-02-21 16:25:37,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:25:37,104 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-02-21 16:25:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:37,108 INFO L225 Difference]: With dead ends: 51 [2021-02-21 16:25:37,108 INFO L226 Difference]: Without dead ends: 37 [2021-02-21 16:25:37,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:25:37,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-21 16:25:37,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2021-02-21 16:25:37,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-21 16:25:37,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2021-02-21 16:25:37,134 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 23 [2021-02-21 16:25:37,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:37,137 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2021-02-21 16:25:37,137 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:25:37,138 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2021-02-21 16:25:37,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-21 16:25:37,139 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:37,140 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] [2021-02-21 16:25:37,140 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:25:37,141 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:37,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:37,142 INFO L82 PathProgramCache]: Analyzing trace with hash -708797194, now seen corresponding path program 1 times [2021-02-21 16:25:37,143 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:37,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421647906] [2021-02-21 16:25:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:37,235 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:37,272 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:37,307 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:25:37,307 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:25:37,308 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:25:37,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:37 BoogieIcfgContainer [2021-02-21 16:25:37,358 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:25:37,360 INFO L168 Benchmark]: Toolchain (without parser) took 2413.97 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 54.1 MB in the end (delta: 72.4 MB). Peak memory consumption was 71.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:37,360 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:25:37,361 INFO L168 Benchmark]: CACSL2BoogieTranslator took 403.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 115.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:37,362 INFO L168 Benchmark]: Boogie Preprocessor took 45.33 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:37,363 INFO L168 Benchmark]: RCFGBuilder took 471.54 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 128.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:37,364 INFO L168 Benchmark]: TraceAbstraction took 1470.17 ms. Allocated memory is still 151.0 MB. Free memory was 128.6 MB in the beginning and 54.1 MB in the end (delta: 74.4 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:37,367 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 151.0 MB. Free memory is still 123.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 403.78 ms. Allocated memory is still 151.0 MB. Free memory was 125.4 MB in the beginning and 115.3 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.33 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 471.54 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 128.6 MB in the end (delta: -15.1 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1470.17 ms. Allocated memory is still 151.0 MB. Free memory was 128.6 MB in the beginning and 54.1 MB in the end (delta: 74.4 MB). Peak memory consumption was 74.4 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() [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; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [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