/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/condnf.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:57:56,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:57:56,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:57:56,844 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:57:56,845 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:57:56,848 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:57:56,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:57:56,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:57:56,862 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:57:56,870 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:57:56,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:57:56,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:57:56,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:57:56,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:57:56,882 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:57:56,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:57:56,884 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:57:56,885 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:57:56,886 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:57:56,888 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:57:56,890 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:57:56,891 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:57:56,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:57:56,893 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:57:56,896 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:57:56,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:57:56,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:57:56,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:57:56,908 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 17:57:56,936 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:57:56,936 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:57:56,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:57:56,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:57:56,938 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:57:56,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:57:56,938 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:57:56,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:57:56,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:57:56,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:57:56,939 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:57:56,939 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:57:56,939 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:57:56,940 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:57:56,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:57:56,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:57:56,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:57:56,941 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:57:56,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:57:56,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:57:56,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:57:56,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:57:56,942 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:57:56,942 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:57:56,942 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:57:56,942 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:57:56,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:57:56,943 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:57:56,943 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:57:57,314 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:57:57,340 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:57:57,343 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:57:57,344 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:57:57,345 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:57:57,346 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condnf.c [2021-02-19 17:57:57,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d360cc4/69c6e3cbeab6465ba6ee30b9b33f3387/FLAG0298c9663 [2021-02-19 17:57:57,976 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:57:57,978 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/condnf.c [2021-02-19 17:57:57,986 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d360cc4/69c6e3cbeab6465ba6ee30b9b33f3387/FLAG0298c9663 [2021-02-19 17:57:58,323 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45d360cc4/69c6e3cbeab6465ba6ee30b9b33f3387 [2021-02-19 17:57:58,331 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:57:58,342 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:57:58,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:57:58,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:57:58,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:57:58,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:57:58" (1/1) ... [2021-02-19 17:57:58,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@185e122 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:58, skipping insertion in model container [2021-02-19 17:57:58,351 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:57:58" (1/1) ... [2021-02-19 17:57:58,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:57:58,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:57:58,524 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/condnf.c[589,602] [2021-02-19 17:57:58,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:57:58,550 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:57:58,564 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/condnf.c[589,602] [2021-02-19 17:57:58,571 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:57:58,586 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:57:58,587 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:58 WrapperNode [2021-02-19 17:57:58,587 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:57:58,588 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:57:58,589 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:57:58,589 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:57:58,602 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:58" (1/1) ... [2021-02-19 17:57:58,602 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:58" (1/1) ... [2021-02-19 17:57:58,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:58" (1/1) ... [2021-02-19 17:57:58,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:58" (1/1) ... [2021-02-19 17:57:58,620 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:58" (1/1) ... [2021-02-19 17:57:58,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:58" (1/1) ... [2021-02-19 17:57:58,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:58" (1/1) ... [2021-02-19 17:57:58,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:57:58,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:57:58,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:57:58,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:57:58,632 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:58" (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 17:57:58,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:57:58,758 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:57:58,759 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:57:58,759 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:57:58,759 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:57:58,760 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:57:58,760 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:57:58,760 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:57:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:57:58,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:57:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:57:58,762 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:57:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:57:58,763 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:57:58,765 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:57:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:57:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:57:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:57:58,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:57:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:57:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:57:58,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:57:59,352 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:57:59,353 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-19 17:57:59,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:57:59 BoogieIcfgContainer [2021-02-19 17:57:59,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:57:59,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:57:59,362 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:57:59,371 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:57:59,371 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:57:58" (1/3) ... [2021-02-19 17:57:59,372 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7761f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:57:59, skipping insertion in model container [2021-02-19 17:57:59,373 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:57:58" (2/3) ... [2021-02-19 17:57:59,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d7761f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:57:59, skipping insertion in model container [2021-02-19 17:57:59,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:57:59" (3/3) ... [2021-02-19 17:57:59,382 INFO L111 eAbstractionObserver]: Analyzing ICFG condnf.c [2021-02-19 17:57:59,393 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:57:59,400 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:57:59,422 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:57:59,468 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:57:59,469 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:57:59,469 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:57:59,469 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:57:59,469 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:57:59,469 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:57:59,470 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:57:59,470 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:57:59,495 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-02-19 17:57:59,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 17:57:59,502 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:57:59,503 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] [2021-02-19 17:57:59,503 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:57:59,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:57:59,515 INFO L82 PathProgramCache]: Analyzing trace with hash -9733170, now seen corresponding path program 1 times [2021-02-19 17:57:59,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:57:59,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882764442] [2021-02-19 17:57:59,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:57:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:57:59,799 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:59,801 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:59,803 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:59,804 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:57:59,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:57:59,926 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:59,928 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:59,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:57:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:57:59,938 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:59,939 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:59,941 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:57:59,943 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:57:59,953 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 17:57:59,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882764442] [2021-02-19 17:57:59,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:57:59,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:57:59,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029131393] [2021-02-19 17:57:59,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:57:59,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:57:59,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:57:59,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:57:59,983 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2021-02-19 17:58:00,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:00,116 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-02-19 17:58:00,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:58:00,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2021-02-19 17:58:00,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:00,132 INFO L225 Difference]: With dead ends: 60 [2021-02-19 17:58:00,132 INFO L226 Difference]: Without dead ends: 30 [2021-02-19 17:58:00,141 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:00,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-19 17:58:00,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2021-02-19 17:58:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-19 17:58:00,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-02-19 17:58:00,180 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2021-02-19 17:58:00,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:00,181 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-02-19 17:58:00,181 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:58:00,181 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-02-19 17:58:00,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-19 17:58:00,182 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:00,182 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] [2021-02-19 17:58:00,183 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:58:00,183 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:00,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:00,184 INFO L82 PathProgramCache]: Analyzing trace with hash -596539184, now seen corresponding path program 1 times [2021-02-19 17:58:00,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:00,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426678389] [2021-02-19 17:58:00,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:00,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:00,241 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:00,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:00,242 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:00,243 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:00,257 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:00,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:00,267 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:00,268 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:00,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:00,310 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:00,311 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:00,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:00,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:00,319 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:00,320 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:00,322 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 17:58:00,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426678389] [2021-02-19 17:58:00,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:00,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 17:58:00,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393050736] [2021-02-19 17:58:00,325 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 17:58:00,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:00,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 17:58:00,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:58:00,327 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2021-02-19 17:58:00,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:00,494 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2021-02-19 17:58:00,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:58:00,495 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-02-19 17:58:00,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:00,498 INFO L225 Difference]: With dead ends: 54 [2021-02-19 17:58:00,498 INFO L226 Difference]: Without dead ends: 39 [2021-02-19 17:58:00,499 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 17:58:00,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-02-19 17:58:00,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2021-02-19 17:58:00,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2021-02-19 17:58:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2021-02-19 17:58:00,513 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 22 [2021-02-19 17:58:00,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:00,514 INFO L480 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2021-02-19 17:58:00,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 17:58:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2021-02-19 17:58:00,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-19 17:58:00,515 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:00,516 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] [2021-02-19 17:58:00,516 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:58:00,516 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:00,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:00,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2074913930, now seen corresponding path program 1 times [2021-02-19 17:58:00,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:00,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122866917] [2021-02-19 17:58:00,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:00,597 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:00,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:00,640 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:00,671 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:58:00,671 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:58:00,671 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:58:00,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:58:00 BoogieIcfgContainer [2021-02-19 17:58:00,724 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:58:00,726 INFO L168 Benchmark]: Toolchain (without parser) took 2392.87 ms. Allocated memory is still 152.0 MB. Free memory was 126.5 MB in the beginning and 58.5 MB in the end (delta: 67.9 MB). Peak memory consumption was 69.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:00,726 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 152.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:00,727 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.68 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 115.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:00,728 INFO L168 Benchmark]: Boogie Preprocessor took 41.34 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 113.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:00,729 INFO L168 Benchmark]: RCFGBuilder took 726.62 ms. Allocated memory is still 152.0 MB. Free memory was 113.7 MB in the beginning and 133.0 MB in the end (delta: -19.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:00,730 INFO L168 Benchmark]: TraceAbstraction took 1362.51 ms. Allocated memory is still 152.0 MB. Free memory was 132.4 MB in the beginning and 58.5 MB in the end (delta: 73.9 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:00,733 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 152.0 MB. Free memory is still 123.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 243.68 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 115.6 MB in the end (delta: 9.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.34 ms. Allocated memory is still 152.0 MB. Free memory was 115.6 MB in the beginning and 113.7 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 726.62 ms. Allocated memory is still 152.0 MB. Free memory was 113.7 MB in the beginning and 133.0 MB in the end (delta: -19.2 MB). Peak memory consumption was 20.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1362.51 ms. Allocated memory is still 152.0 MB. Free memory was 132.4 MB in the beginning and 58.5 MB in the end (delta: 73.9 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] int *a = malloc(sizeof(int)*N); [L30] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1] [L30] COND TRUE i N [L38] EXPR a[i] [L38] a[i] = a[i] [L35] i++ VAL [\old(N)=0, a={-1:0}, i=1, malloc(sizeof(int)*N)={-1:0}, N=1] [L35] COND FALSE !(i