/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/ms4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:58:17,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:58:17,355 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:58:17,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:58:17,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:58:17,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:58:17,423 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:58:17,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:58:17,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:58:17,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:58:17,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:58:17,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:58:17,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:58:17,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:58:17,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:58:17,451 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:58:17,454 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:58:17,455 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:58:17,462 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:58:17,470 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:58:17,471 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:58:17,473 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:58:17,475 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:58:17,477 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:58:17,485 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:58:17,497 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:58:17,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:58:17,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:58:17,499 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 17:58:17,549 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:58:17,550 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:58:17,554 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:58:17,554 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:58:17,555 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:58:17,555 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:58:17,555 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:58:17,555 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:58:17,556 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:58:17,556 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:58:17,557 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:58:17,558 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:58:17,558 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:58:17,558 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:58:17,558 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:58:17,558 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:58:17,559 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:58:17,559 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:58:17,559 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:58:17,559 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:58:17,560 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:58:17,560 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:58:17,560 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:58:17,560 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:58:17,561 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:58:17,561 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:58:17,561 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:58:17,561 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:58:17,561 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:58:17,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:58:18,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:58:18,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:58:18,007 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:58:18,008 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:58:18,009 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms4f.c [2021-02-19 17:58:18,100 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e6f6c9ec/807e1688c8a340969aa8003f479b7d46/FLAGcd3af5996 [2021-02-19 17:58:18,755 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:58:18,756 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms4f.c [2021-02-19 17:58:18,764 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e6f6c9ec/807e1688c8a340969aa8003f479b7d46/FLAGcd3af5996 [2021-02-19 17:58:19,102 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1e6f6c9ec/807e1688c8a340969aa8003f479b7d46 [2021-02-19 17:58:19,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:58:19,119 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:58:19,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:19,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:58:19,126 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:58:19,127 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:19" (1/1) ... [2021-02-19 17:58:19,128 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b2f2681 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:19, skipping insertion in model container [2021-02-19 17:58:19,128 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:58:19" (1/1) ... [2021-02-19 17:58:19,137 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:58:19,153 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:58:19,344 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/ms4f.c[587,600] [2021-02-19 17:58:19,364 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:19,373 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:58:19,389 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/ms4f.c[587,600] [2021-02-19 17:58:19,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:58:19,415 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:58:19,416 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:19 WrapperNode [2021-02-19 17:58:19,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:58:19,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:58:19,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:58:19,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:58:19,431 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:19" (1/1) ... [2021-02-19 17:58:19,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:19" (1/1) ... [2021-02-19 17:58:19,440 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:19" (1/1) ... [2021-02-19 17:58:19,440 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:19" (1/1) ... [2021-02-19 17:58:19,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:19" (1/1) ... [2021-02-19 17:58:19,454 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:19" (1/1) ... [2021-02-19 17:58:19,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:19" (1/1) ... [2021-02-19 17:58:19,458 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:58:19,459 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:58:19,459 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:58:19,459 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:58:19,461 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:19" (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 17:58:19,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:58:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:58:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:58:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-19 17:58:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:58:19,584 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:58:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:58:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:58:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:58:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:58:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-19 17:58:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:58:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-19 17:58:19,587 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-19 17:58:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:58:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-19 17:58:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:58:19,588 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:58:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:58:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:58:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:58:19,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:58:19,887 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:58:19,888 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-19 17:58:19,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:19 BoogieIcfgContainer [2021-02-19 17:58:19,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:58:19,892 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:58:19,893 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:58:19,897 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:58:19,898 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:58:19" (1/3) ... [2021-02-19 17:58:19,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198805c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:19, skipping insertion in model container [2021-02-19 17:58:19,899 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:58:19" (2/3) ... [2021-02-19 17:58:19,899 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@198805c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:58:19, skipping insertion in model container [2021-02-19 17:58:19,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:58:19" (3/3) ... [2021-02-19 17:58:19,901 INFO L111 eAbstractionObserver]: Analyzing ICFG ms4f.c [2021-02-19 17:58:19,909 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:58:19,915 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:58:19,966 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:58:20,021 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:58:20,021 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:58:20,021 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:58:20,022 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:58:20,022 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:58:20,022 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:58:20,022 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:58:20,022 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:58:20,041 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-02-19 17:58:20,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-19 17:58:20,046 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:20,047 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] [2021-02-19 17:58:20,048 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:20,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:20,057 INFO L82 PathProgramCache]: Analyzing trace with hash 863653859, now seen corresponding path program 1 times [2021-02-19 17:58:20,068 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:20,068 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108293483] [2021-02-19 17:58:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:20,329 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:20,330 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:20,331 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:20,332 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:20,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:20,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:20,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:20,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:20,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:20,422 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:20,423 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:20,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:20,430 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 17:58:20,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108293483] [2021-02-19 17:58:20,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:20,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-19 17:58:20,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606794165] [2021-02-19 17:58:20,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-19 17:58:20,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:20,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-19 17:58:20,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-19 17:58:20,459 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2021-02-19 17:58:20,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:20,558 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2021-02-19 17:58:20,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-19 17:58:20,560 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-02-19 17:58:20,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:20,570 INFO L225 Difference]: With dead ends: 54 [2021-02-19 17:58:20,570 INFO L226 Difference]: Without dead ends: 25 [2021-02-19 17:58:20,573 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 17:58:20,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-02-19 17:58:20,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-02-19 17:58:20,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-19 17:58:20,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-02-19 17:58:20,622 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2021-02-19 17:58:20,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:20,623 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-02-19 17:58:20,623 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-19 17:58:20,623 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-02-19 17:58:20,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-19 17:58:20,624 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:20,624 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] [2021-02-19 17:58:20,625 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:58:20,625 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:20,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:20,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1121819297, now seen corresponding path program 1 times [2021-02-19 17:58:20,626 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:20,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626760178] [2021-02-19 17:58:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:20,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:20,688 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:20,689 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:20,690 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:20,691 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:58:20,700 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:20,701 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:58:20,710 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:20,711 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:20,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:58:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:20,755 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:20,756 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:20,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-19 17:58:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:58:20,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:58:20,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:58:20,767 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 17:58:20,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626760178] [2021-02-19 17:58:20,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:58:20,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-19 17:58:20,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996104335] [2021-02-19 17:58:20,770 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-19 17:58:20,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:58:20,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-19 17:58:20,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-19 17:58:20,772 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2021-02-19 17:58:20,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:58:20,894 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-02-19 17:58:20,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:58:20,895 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-02-19 17:58:20,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:58:20,896 INFO L225 Difference]: With dead ends: 40 [2021-02-19 17:58:20,896 INFO L226 Difference]: Without dead ends: 30 [2021-02-19 17:58:20,897 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 17:58:20,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-19 17:58:20,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-02-19 17:58:20,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-19 17:58:20,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-02-19 17:58:20,907 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2021-02-19 17:58:20,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:58:20,907 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-02-19 17:58:20,907 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-19 17:58:20,907 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-02-19 17:58:20,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-19 17:58:20,908 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:58:20,909 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] [2021-02-19 17:58:20,909 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:58:20,909 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:58:20,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:58:20,910 INFO L82 PathProgramCache]: Analyzing trace with hash -667943349, now seen corresponding path program 1 times [2021-02-19 17:58:20,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:58:20,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414940127] [2021-02-19 17:58:20,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:58:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:20,958 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-19 17:58:20,999 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-19 17:58:21,033 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-19 17:58:21,033 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-19 17:58:21,034 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-19 17:58:21,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:58:21 BoogieIcfgContainer [2021-02-19 17:58:21,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:58:21,079 INFO L168 Benchmark]: Toolchain (without parser) took 1970.80 ms. Allocated memory is still 180.4 MB. Free memory was 155.4 MB in the beginning and 94.5 MB in the end (delta: 60.9 MB). Peak memory consumption was 60.7 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:21,079 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 180.4 MB. Free memory is still 158.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:58:21,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.41 ms. Allocated memory is still 180.4 MB. Free memory was 154.3 MB in the beginning and 144.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:21,081 INFO L168 Benchmark]: Boogie Preprocessor took 40.88 ms. Allocated memory is still 180.4 MB. Free memory was 144.3 MB in the beginning and 142.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:21,082 INFO L168 Benchmark]: RCFGBuilder took 431.50 ms. Allocated memory is still 180.4 MB. Free memory was 142.7 MB in the beginning and 126.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:21,083 INFO L168 Benchmark]: TraceAbstraction took 1184.66 ms. Allocated memory is still 180.4 MB. Free memory was 125.6 MB in the beginning and 94.5 MB in the end (delta: 31.1 MB). Peak memory consumption was 30.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:58:21,090 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 180.4 MB. Free memory is still 158.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 295.41 ms. Allocated memory is still 180.4 MB. Free memory was 154.3 MB in the beginning and 144.3 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.88 ms. Allocated memory is still 180.4 MB. Free memory was 144.3 MB in the beginning and 142.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 431.50 ms. Allocated memory is still 180.4 MB. Free memory was 142.7 MB in the beginning and 126.1 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1184.66 ms. Allocated memory is still 180.4 MB. Free memory was 125.6 MB in the beginning and 94.5 MB in the end (delta: 31.1 MB). Peak memory consumption was 30.3 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)=118, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={9:0}] [L31] COND TRUE i 3*N) VAL [\old(cond)=0, \old(N)=0, N=1] [L15] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L15] reach_error() VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 39 SDslu, 11 SDs, 0 SdLazy, 64 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 2320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...