/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/s1liff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:25:27,388 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:25:27,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:25:27,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:25:27,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:25:27,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:25:27,430 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:25:27,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:25:27,442 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:25:27,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:25:27,444 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:25:27,446 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:25:27,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:25:27,448 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:25:27,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:25:27,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:25:27,451 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:25:27,452 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:25:27,454 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:25:27,456 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:25:27,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:25:27,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:25:27,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:25:27,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:25:27,468 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:25:27,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:25:27,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:25:27,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:25:27,485 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:25:27,532 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:25:27,533 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:25:27,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:25:27,536 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:25:27,537 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:25:27,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:25:27,539 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:25:27,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:25:27,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:25:27,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:25:27,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:25:27,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:25:27,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:25:27,541 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:25:27,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:25:27,541 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:25:27,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:25:27,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:25:27,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:25:27,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:25:27,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:27,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:25:27,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:25:27,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:25:27,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:25:27,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:25:27,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:25:27,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:25:27,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:25:27,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:25:28,003 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:25:28,006 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:25:28,008 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:25:28,010 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:25:28,011 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s1liff.c [2021-02-21 16:25:28,106 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c33e9db/bee3adf8f9c54386ad0a172e0f5c5230/FLAGaf9986b33 [2021-02-21 16:25:28,718 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:25:28,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/s1liff.c [2021-02-21 16:25:28,727 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c33e9db/bee3adf8f9c54386ad0a172e0f5c5230/FLAGaf9986b33 [2021-02-21 16:25:29,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11c33e9db/bee3adf8f9c54386ad0a172e0f5c5230 [2021-02-21 16:25:29,089 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:25:29,101 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:25:29,103 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:29,103 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:25:29,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:25:29,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:29" (1/1) ... [2021-02-21 16:25:29,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55010aaa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:29, skipping insertion in model container [2021-02-21 16:25:29,110 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:25:29" (1/1) ... [2021-02-21 16:25:29,118 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:25:29,134 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:25:29,296 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/s1liff.c[589,602] [2021-02-21 16:25:29,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:29,328 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:25:29,340 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/s1liff.c[589,602] [2021-02-21 16:25:29,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:25:29,367 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:25:29,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:29 WrapperNode [2021-02-21 16:25:29,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:25:29,369 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:25:29,370 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:25:29,370 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:25:29,384 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:29" (1/1) ... [2021-02-21 16:25:29,385 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:29" (1/1) ... [2021-02-21 16:25:29,406 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:29" (1/1) ... [2021-02-21 16:25:29,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:29" (1/1) ... [2021-02-21 16:25:29,430 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:29" (1/1) ... [2021-02-21 16:25:29,440 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:29" (1/1) ... [2021-02-21 16:25:29,444 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:29" (1/1) ... [2021-02-21 16:25:29,455 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:25:29,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:25:29,457 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:25:29,457 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:25:29,459 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:29" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:25:29,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:25:29,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:25:29,574 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:25:29,574 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:25:29,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:25:29,575 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:25:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:25:29,576 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:25:29,577 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:25:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:25:29,578 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:25:29,579 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:25:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:25:29,580 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:25:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:25:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:25:29,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:25:29,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:25:29,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:25:29,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:25:29,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:25:29,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:25:30,215 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:25:30,216 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-02-21 16:25:30,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:30 BoogieIcfgContainer [2021-02-21 16:25:30,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:25:30,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:25:30,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:25:30,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:25:30,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:25:29" (1/3) ... [2021-02-21 16:25:30,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6840aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:30, skipping insertion in model container [2021-02-21 16:25:30,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:25:29" (2/3) ... [2021-02-21 16:25:30,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e6840aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:25:30, skipping insertion in model container [2021-02-21 16:25:30,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:25:30" (3/3) ... [2021-02-21 16:25:30,234 INFO L111 eAbstractionObserver]: Analyzing ICFG s1liff.c [2021-02-21 16:25:30,243 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:25:30,248 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:25:30,271 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:25:30,299 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:25:30,300 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:25:30,300 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:25:30,300 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:25:30,300 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:25:30,300 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:25:30,300 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:25:30,301 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:25:30,319 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2021-02-21 16:25:30,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 16:25:30,326 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:30,326 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:25:30,327 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:30,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:30,334 INFO L82 PathProgramCache]: Analyzing trace with hash -378919619, now seen corresponding path program 1 times [2021-02-21 16:25:30,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:30,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790326672] [2021-02-21 16:25:30,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:30,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:30,539 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:30,541 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:30,543 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:30,544 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:30,687 WARN L202 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-21 16:25:30,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:30,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:30,745 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:30,747 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:30,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:30,760 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:30,762 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:30,764 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:30,765 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:30,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:25:30,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790326672] [2021-02-21 16:25:30,779 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:30,779 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:25:30,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10043992] [2021-02-21 16:25:30,786 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:25:30,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:30,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:25:30,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:25:30,810 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 3 states. [2021-02-21 16:25:31,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:31,029 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2021-02-21 16:25:31,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:25:31,031 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2021-02-21 16:25:31,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:31,039 INFO L225 Difference]: With dead ends: 60 [2021-02-21 16:25:31,039 INFO L226 Difference]: Without dead ends: 28 [2021-02-21 16:25:31,043 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 [2021-02-21 16:25:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-02-21 16:25:31,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2021-02-21 16:25:31,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-21 16:25:31,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2021-02-21 16:25:31,099 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 23 [2021-02-21 16:25:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:31,100 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2021-02-21 16:25:31,100 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:25:31,100 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2021-02-21 16:25:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-02-21 16:25:31,102 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:31,102 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:25:31,103 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:25:31,103 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:31,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:31,104 INFO L82 PathProgramCache]: Analyzing trace with hash -1390036869, now seen corresponding path program 1 times [2021-02-21 16:25:31,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:31,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141513809] [2021-02-21 16:25:31,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:31,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:31,176 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:31,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:31,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:25:31,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:31,196 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:25:31,207 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:31,208 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:31,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:25:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:31,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:31,252 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:31,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:25:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:25:31,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:25:31,261 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:25:31,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:25:31,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141513809] [2021-02-21 16:25:31,265 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:25:31,265 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:25:31,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447437513] [2021-02-21 16:25:31,267 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:25:31,267 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:25:31,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:25:31,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:25:31,269 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 5 states. [2021-02-21 16:25:31,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:25:31,403 INFO L93 Difference]: Finished difference Result 48 states and 57 transitions. [2021-02-21 16:25:31,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:25:31,404 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2021-02-21 16:25:31,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:25:31,405 INFO L225 Difference]: With dead ends: 48 [2021-02-21 16:25:31,405 INFO L226 Difference]: Without dead ends: 35 [2021-02-21 16:25:31,407 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 [2021-02-21 16:25:31,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-02-21 16:25:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2021-02-21 16:25:31,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-21 16:25:31,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2021-02-21 16:25:31,417 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 23 [2021-02-21 16:25:31,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:25:31,417 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2021-02-21 16:25:31,417 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:25:31,418 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2021-02-21 16:25:31,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-21 16:25:31,419 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:25:31,419 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] [2021-02-21 16:25:31,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:25:31,420 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:25:31,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:25:31,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1506162525, now seen corresponding path program 1 times [2021-02-21 16:25:31,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:25:31,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81439044] [2021-02-21 16:25:31,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:25:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:31,483 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:31,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:25:31,536 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:25:31,596 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:25:31,597 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:25:31,597 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:25:31,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:25:31 BoogieIcfgContainer [2021-02-21 16:25:31,673 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:25:31,674 INFO L168 Benchmark]: Toolchain (without parser) took 2582.98 ms. Allocated memory is still 177.2 MB. Free memory was 152.0 MB in the beginning and 85.1 MB in the end (delta: 66.9 MB). Peak memory consumption was 67.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:31,675 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 177.2 MB. Free memory is still 148.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:25:31,676 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.70 ms. Allocated memory is still 177.2 MB. Free memory was 150.8 MB in the beginning and 140.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:31,677 INFO L168 Benchmark]: Boogie Preprocessor took 85.45 ms. Allocated memory is still 177.2 MB. Free memory was 140.8 MB in the beginning and 139.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:31,677 INFO L168 Benchmark]: RCFGBuilder took 762.00 ms. Allocated memory is still 177.2 MB. Free memory was 139.2 MB in the beginning and 157.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:31,678 INFO L168 Benchmark]: TraceAbstraction took 1450.40 ms. Allocated memory is still 177.2 MB. Free memory was 157.4 MB in the beginning and 85.1 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:25:31,682 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 177.2 MB. Free memory is still 148.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 265.70 ms. Allocated memory is still 177.2 MB. Free memory was 150.8 MB in the beginning and 140.8 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 85.45 ms. Allocated memory is still 177.2 MB. Free memory was 140.8 MB in the beginning and 139.2 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 762.00 ms. Allocated memory is still 177.2 MB. Free memory was 139.2 MB in the beginning and 157.9 MB in the end (delta: -18.8 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1450.40 ms. Allocated memory is still 177.2 MB. Free memory was 157.4 MB in the beginning and 85.1 MB in the end (delta: 72.4 MB). Peak memory consumption was 72.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=51, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = N [L32] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={11:0}] [L32] COND TRUE i