/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/brs1f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:17,363 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:17,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:17,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:51:17,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:51:17,420 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:51:17,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:51:17,432 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:51:17,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:51:17,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:51:17,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:51:17,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:51:17,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:17,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:17,450 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:17,453 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:17,458 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:17,459 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:17,467 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:17,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:17,478 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:17,480 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:17,482 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:17,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:17,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:17,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:17,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:17,521 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:17,522 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-23 13:51:17,581 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:17,581 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:17,583 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:17,583 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:17,584 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:17,584 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:17,584 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:17,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:17,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:17,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:17,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:17,586 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:17,586 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:17,586 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:17,586 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:17,587 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:17,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:17,587 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:17,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:17,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:17,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:17,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:17,589 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:17,589 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:17,589 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:17,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:17,590 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:17,590 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:17,590 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:17,943 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:17,967 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:17,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:17,972 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:17,973 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:17,973 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs1f.c [2021-02-23 13:51:18,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2aee714a/bb518b79bee24f7dac5f823185637d35/FLAG917e561b9 [2021-02-23 13:51:18,651 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:18,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs1f.c [2021-02-23 13:51:18,659 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2aee714a/bb518b79bee24f7dac5f823185637d35/FLAG917e561b9 [2021-02-23 13:51:19,030 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a2aee714a/bb518b79bee24f7dac5f823185637d35 [2021-02-23 13:51:19,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:51:19,046 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:51:19,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:19,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:51:19,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:51:19,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:19" (1/1) ... [2021-02-23 13:51:19,054 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e70b812 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:19, skipping insertion in model container [2021-02-23 13:51:19,054 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:19" (1/1) ... [2021-02-23 13:51:19,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:51:19,083 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:51:19,259 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/brs1f.c[588,601] [2021-02-23 13:51:19,285 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:19,297 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:51:19,315 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/brs1f.c[588,601] [2021-02-23 13:51:19,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:19,367 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:51:19,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:19 WrapperNode [2021-02-23 13:51:19,369 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:19,370 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:51:19,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:51:19,373 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:51:19,387 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:19" (1/1) ... [2021-02-23 13:51:19,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:19" (1/1) ... [2021-02-23 13:51:19,409 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:19" (1/1) ... [2021-02-23 13:51:19,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:19" (1/1) ... [2021-02-23 13:51:19,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:19" (1/1) ... [2021-02-23 13:51:19,438 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:19" (1/1) ... [2021-02-23 13:51:19,445 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:19" (1/1) ... [2021-02-23 13:51:19,451 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:51:19,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:51:19,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:51:19,453 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:51:19,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:19" (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 [2021-02-23 13:51:19,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:51:19,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:51:19,578 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:51:19,578 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:51:19,578 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:51:19,579 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:51:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:51:19,579 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:51:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:51:19,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:51:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:51:19,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:51:19,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:51:19,583 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:51:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:51:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:51:19,584 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:51:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:51:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:51:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:51:19,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:51:19,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:51:20,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:51:20,171 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 13:51:20,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:20 BoogieIcfgContainer [2021-02-23 13:51:20,173 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:51:20,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:51:20,175 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:51:20,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:51:20,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:51:19" (1/3) ... [2021-02-23 13:51:20,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17dc0762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:20, skipping insertion in model container [2021-02-23 13:51:20,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:19" (2/3) ... [2021-02-23 13:51:20,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17dc0762 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:20, skipping insertion in model container [2021-02-23 13:51:20,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:20" (3/3) ... [2021-02-23 13:51:20,182 INFO L111 eAbstractionObserver]: Analyzing ICFG brs1f.c [2021-02-23 13:51:20,190 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:51:20,194 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:51:20,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:51:20,242 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:51:20,242 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:51:20,242 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:51:20,242 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:51:20,243 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:51:20,243 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:51:20,243 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:51:20,243 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:51:20,260 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-02-23 13:51:20,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:51:20,266 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:20,267 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] [2021-02-23 13:51:20,268 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:20,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:20,274 INFO L82 PathProgramCache]: Analyzing trace with hash 816154861, now seen corresponding path program 1 times [2021-02-23 13:51:20,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:20,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568909047] [2021-02-23 13:51:20,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:20,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:20,467 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:20,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:20,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:20,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:20,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:20,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:20,564 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:20,565 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:20,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:20,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:20,572 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:20,573 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:20,574 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:20,575 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:20,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:20,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568909047] [2021-02-23 13:51:20,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:20,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:51:20,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160128837] [2021-02-23 13:51:20,588 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:51:20,589 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:20,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:51:20,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:20,606 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2021-02-23 13:51:20,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:20,746 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2021-02-23 13:51:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:51:20,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-02-23 13:51:20,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:20,757 INFO L225 Difference]: With dead ends: 56 [2021-02-23 13:51:20,757 INFO L226 Difference]: Without dead ends: 26 [2021-02-23 13:51:20,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:20,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-02-23 13:51:20,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-02-23 13:51:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-02-23 13:51:20,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-02-23 13:51:20,803 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2021-02-23 13:51:20,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:20,804 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-02-23 13:51:20,804 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:51:20,804 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-02-23 13:51:20,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:51:20,805 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:20,805 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] [2021-02-23 13:51:20,806 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:51:20,806 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:20,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:20,807 INFO L82 PathProgramCache]: Analyzing trace with hash -1231644863, now seen corresponding path program 1 times [2021-02-23 13:51:20,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:20,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736357857] [2021-02-23 13:51:20,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:20,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:20,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:20,868 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:20,869 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:20,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:20,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:20,903 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:20,904 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:20,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:20,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:20,984 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:20,985 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:20,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:20,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:20,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:20,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:51:20,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736357857] [2021-02-23 13:51:20,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:20,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:51:20,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132735742] [2021-02-23 13:51:21,000 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:51:21,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:21,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:51:21,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:51:21,002 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2021-02-23 13:51:21,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:21,236 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2021-02-23 13:51:21,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:51:21,237 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-02-23 13:51:21,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:21,238 INFO L225 Difference]: With dead ends: 42 [2021-02-23 13:51:21,239 INFO L226 Difference]: Without dead ends: 32 [2021-02-23 13:51:21,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-02-23 13:51:21,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-23 13:51:21,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2021-02-23 13:51:21,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-23 13:51:21,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2021-02-23 13:51:21,249 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 21 [2021-02-23 13:51:21,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:21,249 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2021-02-23 13:51:21,250 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:51:21,250 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2021-02-23 13:51:21,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-23 13:51:21,251 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:21,251 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] [2021-02-23 13:51:21,251 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:51:21,252 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:21,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:21,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1305126266, now seen corresponding path program 1 times [2021-02-23 13:51:21,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:21,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100765739] [2021-02-23 13:51:21,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:21,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:21,295 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:21,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:21,329 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:21,360 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:51:21,361 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:51:21,361 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:51:21,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:51:21 BoogieIcfgContainer [2021-02-23 13:51:21,402 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:51:21,404 INFO L168 Benchmark]: Toolchain (without parser) took 2367.25 ms. Allocated memory is still 158.3 MB. Free memory was 134.3 MB in the beginning and 67.7 MB in the end (delta: 66.6 MB). Peak memory consumption was 66.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:21,404 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 158.3 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:51:21,405 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.16 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 122.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:21,406 INFO L168 Benchmark]: Boogie Preprocessor took 81.72 ms. Allocated memory is still 158.3 MB. Free memory was 122.7 MB in the beginning and 121.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:21,407 INFO L168 Benchmark]: RCFGBuilder took 719.95 ms. Allocated memory is still 158.3 MB. Free memory was 121.1 MB in the beginning and 136.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:21,408 INFO L168 Benchmark]: TraceAbstraction took 1228.19 ms. Allocated memory is still 158.3 MB. Free memory was 135.9 MB in the beginning and 67.7 MB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:21,411 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 158.3 MB. Free memory is still 132.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 321.16 ms. Allocated memory is still 158.3 MB. Free memory was 133.1 MB in the beginning and 122.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.72 ms. Allocated memory is still 158.3 MB. Free memory was 122.7 MB in the beginning and 121.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 719.95 ms. Allocated memory is still 158.3 MB. Free memory was 121.1 MB in the beginning and 136.4 MB in the end (delta: -15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1228.19 ms. Allocated memory is still 158.3 MB. Free memory was 135.9 MB in the beginning and 67.7 MB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 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] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={3:0}] [L31] COND TRUE i