/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/ssinaf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:52:19,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:52:19,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:52:19,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:52:19,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:52:19,202 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:52:19,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:52:19,215 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:52:19,217 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:52:19,224 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:52:19,226 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:52:19,227 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:52:19,228 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:52:19,231 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:52:19,232 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:52:19,233 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:52:19,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:52:19,252 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:52:19,254 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:52:19,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:52:19,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:52:19,268 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:52:19,269 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:52:19,270 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:52:19,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:52:19,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:52:19,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:52:19,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:52:19,294 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 [2021-02-23 13:52:19,322 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:52:19,322 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:52:19,323 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:52:19,323 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:52:19,324 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:52:19,324 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:52:19,324 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:52:19,324 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:52:19,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:52:19,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:52:19,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:52:19,325 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:52:19,325 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:52:19,326 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:52:19,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:52:19,326 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:52:19,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:52:19,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:52:19,327 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:52:19,327 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:52:19,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:52:19,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:52:19,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:52:19,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:52:19,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:52:19,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:52:19,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:52:19,328 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:52:19,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:52:19,682 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:52:19,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:52:19,714 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:52:19,715 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:52:19,716 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:52:19,717 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ssinaf.c [2021-02-23 13:52:19,794 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/578f54e80/e70458a301694086a6d08767878b1a9e/FLAG233e1c29d [2021-02-23 13:52:20,453 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:52:20,454 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ssinaf.c [2021-02-23 13:52:20,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/578f54e80/e70458a301694086a6d08767878b1a9e/FLAG233e1c29d [2021-02-23 13:52:20,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/578f54e80/e70458a301694086a6d08767878b1a9e [2021-02-23 13:52:20,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:52:20,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:52:20,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:20,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:52:20,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:52:20,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:20" (1/1) ... [2021-02-23 13:52:20,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76730321 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:20, skipping insertion in model container [2021-02-23 13:52:20,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:52:20" (1/1) ... [2021-02-23 13:52:20,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:52:20,845 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:52:21,004 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/ssinaf.c[589,602] [2021-02-23 13:52:21,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:21,042 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:52:21,057 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/ssinaf.c[589,602] [2021-02-23 13:52:21,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:52:21,095 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:52:21,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:21 WrapperNode [2021-02-23 13:52:21,096 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:52:21,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:52:21,097 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:52:21,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:52:21,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:21" (1/1) ... [2021-02-23 13:52:21,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:21" (1/1) ... [2021-02-23 13:52:21,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:21" (1/1) ... [2021-02-23 13:52:21,123 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:21" (1/1) ... [2021-02-23 13:52:21,133 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:21" (1/1) ... [2021-02-23 13:52:21,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:21" (1/1) ... [2021-02-23 13:52:21,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:21" (1/1) ... [2021-02-23 13:52:21,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:52:21,147 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:52:21,147 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:52:21,147 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:52:21,148 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:21" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:52:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:52:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:52:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:52:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:52:21,247 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:52:21,248 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:52:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:52:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:52:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:52:21,248 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:52:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:52:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:52:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:52:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:52:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:52:21,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:52:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:52:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:52:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:52:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:52:21,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:52:21,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:52:21,842 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:52:21,847 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2021-02-23 13:52:21,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:21 BoogieIcfgContainer [2021-02-23 13:52:21,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:52:21,852 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:52:21,853 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:52:21,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:52:21,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:52:20" (1/3) ... [2021-02-23 13:52:21,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a62ad9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:21, skipping insertion in model container [2021-02-23 13:52:21,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:52:21" (2/3) ... [2021-02-23 13:52:21,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a62ad9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:52:21, skipping insertion in model container [2021-02-23 13:52:21,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:52:21" (3/3) ... [2021-02-23 13:52:21,863 INFO L111 eAbstractionObserver]: Analyzing ICFG ssinaf.c [2021-02-23 13:52:21,872 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:52:21,878 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:52:21,899 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:52:21,941 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:52:21,942 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:52:21,942 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:52:21,942 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:52:21,942 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:52:21,942 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:52:21,943 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:52:21,943 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:52:21,968 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2021-02-23 13:52:21,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 13:52:21,977 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:21,979 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] [2021-02-23 13:52:21,979 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:21,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:21,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1145952651, now seen corresponding path program 1 times [2021-02-23 13:52:22,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:22,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700955298] [2021-02-23 13:52:22,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:22,293 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:22,295 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:22,296 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:22,297 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:22,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:22,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:22,410 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:22,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:52:22,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:22,421 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:22,423 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:22,425 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:22,426 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:22,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700955298] [2021-02-23 13:52:22,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:22,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:52:22,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387084259] [2021-02-23 13:52:22,453 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:52:22,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:22,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:52:22,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:52:22,471 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2021-02-23 13:52:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:22,602 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2021-02-23 13:52:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:52:22,604 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2021-02-23 13:52:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:22,613 INFO L225 Difference]: With dead ends: 76 [2021-02-23 13:52:22,614 INFO L226 Difference]: Without dead ends: 38 [2021-02-23 13:52:22,617 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 [2021-02-23 13:52:22,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-02-23 13:52:22,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2021-02-23 13:52:22,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-23 13:52:22,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2021-02-23 13:52:22,665 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2021-02-23 13:52:22,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:22,666 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2021-02-23 13:52:22,666 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:52:22,666 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2021-02-23 13:52:22,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 13:52:22,667 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:22,667 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] [2021-02-23 13:52:22,668 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:52:22,668 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:22,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:22,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1573045881, now seen corresponding path program 1 times [2021-02-23 13:52:22,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:22,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597225647] [2021-02-23 13:52:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:22,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:22,733 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:22,733 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:22,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:22,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:52:22,743 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:22,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:52:22,752 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:22,753 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:22,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:52:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:22,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:22,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:22,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:52:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:52:22,802 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:52:22,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:52:22,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:52:22,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597225647] [2021-02-23 13:52:22,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:52:22,807 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:52:22,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692088631] [2021-02-23 13:52:22,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:52:22,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:52:22,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:52:22,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:52:22,811 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2021-02-23 13:52:23,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:52:23,019 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2021-02-23 13:52:23,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:52:23,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2021-02-23 13:52:23,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:52:23,023 INFO L225 Difference]: With dead ends: 75 [2021-02-23 13:52:23,023 INFO L226 Difference]: Without dead ends: 52 [2021-02-23 13:52:23,025 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 [2021-02-23 13:52:23,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-23 13:52:23,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2021-02-23 13:52:23,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-02-23 13:52:23,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2021-02-23 13:52:23,041 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2021-02-23 13:52:23,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:52:23,042 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2021-02-23 13:52:23,042 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:52:23,042 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2021-02-23 13:52:23,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-02-23 13:52:23,044 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:52:23,044 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:52:23,044 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:52:23,045 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:52:23,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:52:23,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1009849533, now seen corresponding path program 1 times [2021-02-23 13:52:23,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:52:23,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499454376] [2021-02-23 13:52:23,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:52:23,081 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-23 13:52:23,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [130069852] [2021-02-23 13:52:23,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-23 13:52:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:23,202 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:52:23,238 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:52:23,317 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:52:23,318 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:52:23,518 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-23 13:52:23,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:52:23 BoogieIcfgContainer [2021-02-23 13:52:23,618 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:52:23,622 INFO L168 Benchmark]: Toolchain (without parser) took 2821.05 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 139.9 MB in the beginning and 173.7 MB in the end (delta: -33.8 MB). Peak memory consumption was 5.6 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:23,624 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 163.6 MB. Free memory is still 135.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:52:23,625 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.98 ms. Allocated memory is still 163.6 MB. Free memory was 138.7 MB in the beginning and 128.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:23,628 INFO L168 Benchmark]: Boogie Preprocessor took 48.56 ms. Allocated memory is still 163.6 MB. Free memory was 128.5 MB in the beginning and 126.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:23,629 INFO L168 Benchmark]: RCFGBuilder took 704.00 ms. Allocated memory is still 163.6 MB. Free memory was 126.6 MB in the beginning and 142.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:23,631 INFO L168 Benchmark]: TraceAbstraction took 1765.45 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 142.4 MB in the beginning and 173.7 MB in the end (delta: -31.4 MB). Peak memory consumption was 8.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:52:23,636 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 163.6 MB. Free memory is still 135.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 283.98 ms. Allocated memory is still 163.6 MB. Free memory was 138.7 MB in the beginning and 128.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.56 ms. Allocated memory is still 163.6 MB. Free memory was 128.5 MB in the beginning and 126.6 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 704.00 ms. Allocated memory is still 163.6 MB. Free memory was 126.6 MB in the beginning and 142.9 MB in the end (delta: -16.2 MB). Peak memory consumption was 18.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1765.45 ms. Allocated memory was 163.6 MB in the beginning and 202.4 MB in the end (delta: 38.8 MB). Free memory was 142.4 MB in the beginning and 173.7 MB in the end (delta: -31.4 MB). Peak memory consumption was 8.5 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)=15, 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] long long *a = malloc(sizeof(long long)*N); [L31] sum[0] = 0 [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1, sum={2:0}] [L32] COND TRUE i