/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/indp2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:58:08,817 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:58:08,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:58:08,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:58:08,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:58:08,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:58:08,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:58:08,861 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:58:08,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:58:08,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:58:08,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:58:08,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:58:08,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:58:08,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:58:08,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:58:08,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:58:08,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:58:08,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:58:08,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:58:08,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:58:08,886 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:58:08,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:58:08,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:58:08,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:58:08,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:58:08,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-19 17:58:08,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-19 17:58:08,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-19 17:58:08,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-19 17:58:08,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-19 17:58:08,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-19 17:58:08,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-19 17:58:08,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-19 17:58:08,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:58:08,905 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:58:08,906 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:58:08,910 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 [2021-02-19 17:58:08,949 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:58:08,949 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:58:08,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:58:08,952 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:58:08,952 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:58:08,952 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:58:08,952 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:58:08,952 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:58:08,953 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:58:08,953 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:58:08,953 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:58:08,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:58:08,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:58:08,954 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:58:08,954 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:58:08,955 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:58:08,955 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:58:08,956 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:58:08,956 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:58:08,956 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:58:08,956 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:58:08,956 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:58:08,957 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:58:08,957 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:58:08,957 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:58:08,957 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:58:08,957 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:58:08,958 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:58:08,958 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:58:09,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:58:09,366 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:58:09,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:58:09,370 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:58:09,371 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:58:09,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp2f.c [2021-02-19 17:58:09,450 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3a7768d7/c1fe19850e4e4e93b5254501f9aa8028/FLAG61799db35 [2021-02-19 17:58:09,994 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:58:09,995 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/indp2f.c [2021-02-19 17:58:10,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3a7768d7/c1fe19850e4e4e93b5254501f9aa8028/FLAG61799db35 [2021-02-19 17:58:10,356 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a3a7768d7/c1fe19850e4e4e93b5254501f9aa8028 [2021-02-19 17:58:10,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:58:10,372 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:58:10,374 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:10,374 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:58:10,378 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:58:10,379 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:10" (1/1) ... [2021-02-19 17:58:10,380 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61f5e61 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:10, skipping insertion in model container [2021-02-19 17:58:10,381 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:10" (1/1) ... [2021-02-19 17:58:10,394 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:58:10,410 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:58:10,552 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/indp2f.c[589,602] [2021-02-19 17:58:10,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:10,590 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:58:10,604 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/indp2f.c[589,602] [2021-02-19 17:58:10,612 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:10,629 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:58:10,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:10 WrapperNode [2021-02-19 17:58:10,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:10,631 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:58:10,631 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:58:10,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:58:10,645 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:10" (1/1) ... [2021-02-19 17:58:10,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:10" (1/1) ... [2021-02-19 17:58:10,676 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:10" (1/1) ... [2021-02-19 17:58:10,677 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:10" (1/1) ... [2021-02-19 17:58:10,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:10" (1/1) ... [2021-02-19 17:58:10,707 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:10" (1/1) ... [2021-02-19 17:58:10,710 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:10" (1/1) ... [2021-02-19 17:58:10,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:58:10,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:58:10,721 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:58:10,721 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:58:10,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:10" (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 [2021-02-19 17:58:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:58:10,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:58:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:58:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:58:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:58:10,841 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:58:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:58:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:58:10,842 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:58:10,843 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:58:10,843 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:58:10,843 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:58:10,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:58:10,844 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:58:10,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:58:10,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:58:10,847 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:58:10,848 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:58:10,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:58:10,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:58:10,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:58:10,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:58:11,282 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:58:11,283 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-02-19 17:58:11,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:11 BoogieIcfgContainer [2021-02-19 17:58:11,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:58:11,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:58:11,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:58:11,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:58:11,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:58:10" (1/3) ... [2021-02-19 17:58:11,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77eed0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:11, skipping insertion in model container [2021-02-19 17:58:11,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:10" (2/3) ... [2021-02-19 17:58:11,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77eed0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:11, skipping insertion in model container [2021-02-19 17:58:11,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:11" (3/3) ... [2021-02-19 17:58:11,301 INFO L111 eAbstractionObserver]: Analyzing ICFG indp2f.c [2021-02-19 17:58:11,309 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:58:11,314 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:58:11,335 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:58:11,365 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:58:11,365 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:58:11,366 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:58:11,366 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:58:11,366 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:58:11,366 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:58:11,366 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:58:11,366 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:58:11,389 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-19 17:58:11,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 17:58:11,397 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:11,398 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] [2021-02-19 17:58:11,398 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:11,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:11,405 INFO L82 PathProgramCache]: Analyzing trace with hash 730907677, now seen corresponding path program 1 times [2021-02-19 17:58:11,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:11,417 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646190313] [2021-02-19 17:58:11,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:11,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:11,619 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:11,621 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:11,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:11,624 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:11,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:11,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:11,747 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:11,748 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:11,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:11,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:11,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:11,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:11,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:11,761 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:58:11,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646190313] [2021-02-19 17:58:11,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:11,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:58:11,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068334481] [2021-02-19 17:58:11,775 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:58:11,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:11,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:58:11,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:11,798 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2021-02-19 17:58:11,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:11,950 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2021-02-19 17:58:11,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:58:11,953 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-02-19 17:58:11,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:11,965 INFO L225 Difference]: With dead ends: 64 [2021-02-19 17:58:11,965 INFO L226 Difference]: Without dead ends: 32 [2021-02-19 17:58:11,970 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 [2021-02-19 17:58:11,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-19 17:58:12,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-02-19 17:58:12,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-19 17:58:12,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-02-19 17:58:12,032 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2021-02-19 17:58:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:12,033 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-02-19 17:58:12,033 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:58:12,033 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-02-19 17:58:12,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-19 17:58:12,035 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:12,035 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] [2021-02-19 17:58:12,035 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:58:12,036 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:12,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:12,039 INFO L82 PathProgramCache]: Analyzing trace with hash -548956001, now seen corresponding path program 1 times [2021-02-19 17:58:12,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:12,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863132911] [2021-02-19 17:58:12,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:12,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:12,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:12,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:12,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:12,151 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:12,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:12,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:12,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:12,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:12,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:12,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:12,213 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:12,214 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:12,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:12,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:12,222 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:12,223 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:12,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:58:12,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863132911] [2021-02-19 17:58:12,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:12,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 17:58:12,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571336327] [2021-02-19 17:58:12,230 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 17:58:12,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:12,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 17:58:12,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:58:12,231 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 5 states. [2021-02-19 17:58:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:12,443 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2021-02-19 17:58:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:58:12,444 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2021-02-19 17:58:12,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:12,447 INFO L225 Difference]: With dead ends: 59 [2021-02-19 17:58:12,447 INFO L226 Difference]: Without dead ends: 42 [2021-02-19 17:58:12,448 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 [2021-02-19 17:58:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-19 17:58:12,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 35. [2021-02-19 17:58:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-02-19 17:58:12,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 38 transitions. [2021-02-19 17:58:12,463 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 38 transitions. Word has length 24 [2021-02-19 17:58:12,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:12,463 INFO L480 AbstractCegarLoop]: Abstraction has 35 states and 38 transitions. [2021-02-19 17:58:12,463 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 17:58:12,463 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 38 transitions. [2021-02-19 17:58:12,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-19 17:58:12,465 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:12,465 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] [2021-02-19 17:58:12,465 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:58:12,465 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:12,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:12,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1885615975, now seen corresponding path program 1 times [2021-02-19 17:58:12,467 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:12,467 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273111470] [2021-02-19 17:58:12,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:12,485 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-02-19 17:58:12,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [425033294] [2021-02-19 17:58:12,486 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 [2021-02-19 17:58:12,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:12,568 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:12,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:12,594 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:12,681 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:58:12,683 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:58:12,884 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-02-19 17:58:12,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:58:12 BoogieIcfgContainer [2021-02-19 17:58:12,942 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:58:12,944 INFO L168 Benchmark]: Toolchain (without parser) took 2581.97 ms. Allocated memory was 153.1 MB in the beginning and 204.5 MB in the end (delta: 51.4 MB). Free memory was 128.0 MB in the beginning and 181.3 MB in the end (delta: -53.3 MB). Peak memory consumption was 81.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:12,944 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:12,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.27 ms. Allocated memory is still 153.1 MB. Free memory was 127.0 MB in the beginning and 116.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:12,946 INFO L168 Benchmark]: Boogie Preprocessor took 85.37 ms. Allocated memory is still 153.1 MB. Free memory was 116.9 MB in the beginning and 115.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:12,947 INFO L168 Benchmark]: RCFGBuilder took 564.65 ms. Allocated memory is still 153.1 MB. Free memory was 115.2 MB in the beginning and 133.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:12,948 INFO L168 Benchmark]: TraceAbstraction took 1651.96 ms. Allocated memory was 153.1 MB in the beginning and 204.5 MB in the end (delta: 51.4 MB). Free memory was 133.1 MB in the beginning and 181.3 MB in the end (delta: -48.2 MB). Peak memory consumption was 87.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:12,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 153.1 MB. Free memory is still 126.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 256.27 ms. Allocated memory is still 153.1 MB. Free memory was 127.0 MB in the beginning and 116.9 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.37 ms. Allocated memory is still 153.1 MB. Free memory was 116.9 MB in the beginning and 115.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 564.65 ms. Allocated memory is still 153.1 MB. Free memory was 115.2 MB in the beginning and 133.6 MB in the end (delta: -18.4 MB). Peak memory consumption was 17.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1651.96 ms. Allocated memory was 153.1 MB in the beginning and 204.5 MB in the end (delta: 51.4 MB). Free memory was 133.1 MB in the beginning and 181.3 MB in the end (delta: -48.2 MB). Peak memory consumption was 87.1 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)=11, 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 *a = malloc(sizeof(long long)*N); [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(long long)*N)={-1:0}, N=1] [L30] COND TRUE i