/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/brs4f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:24:51,378 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:24:51,380 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:24:51,414 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:24:51,414 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:24:51,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:24:51,417 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:24:51,431 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:24:51,435 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:24:51,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:24:51,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:24:51,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:24:51,445 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:24:51,447 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:24:51,449 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:24:51,450 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:24:51,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:24:51,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:24:51,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:24:51,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:24:51,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:24:51,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:24:51,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:24:51,475 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:24:51,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:24:51,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:24:51,498 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:24:51,499 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:24:51,500 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 16:24:51,553 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:24:51,553 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:24:51,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:24:51,558 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:24:51,558 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:24:51,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:24:51,559 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:24:51,559 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:24:51,559 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:24:51,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:24:51,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:24:51,561 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:24:51,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:24:51,561 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:24:51,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:24:51,561 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:24:51,562 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:24:51,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:24:51,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:24:51,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:24:51,562 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:24:51,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:24:51,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:24:51,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:24:51,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:24:51,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:24:51,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:24:51,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:24:51,564 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:24:51,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:24:51,947 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:24:51,951 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:24:51,953 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:24:51,954 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:24:51,955 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/brs4f.c [2021-02-21 16:24:52,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313e9ed27/6843dcf53847493f951d0859b2221354/FLAG606a21dc6 [2021-02-21 16:24:52,734 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:24:52,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/brs4f.c [2021-02-21 16:24:52,745 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313e9ed27/6843dcf53847493f951d0859b2221354/FLAG606a21dc6 [2021-02-21 16:24:53,090 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/313e9ed27/6843dcf53847493f951d0859b2221354 [2021-02-21 16:24:53,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:24:53,115 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:24:53,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:24:53,117 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:24:53,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:24:53,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:24:53" (1/1) ... [2021-02-21 16:24:53,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779b2473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:24:53, skipping insertion in model container [2021-02-21 16:24:53,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:24:53" (1/1) ... [2021-02-21 16:24:53,131 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:24:53,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:24:53,295 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/brs4f.c[588,601] [2021-02-21 16:24:53,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:24:53,321 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:24:53,335 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/brs4f.c[588,601] [2021-02-21 16:24:53,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:24:53,361 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:24:53,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:24:53 WrapperNode [2021-02-21 16:24:53,361 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:24:53,363 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:24:53,363 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:24:53,363 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:24:53,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:24:53" (1/1) ... [2021-02-21 16:24:53,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:24:53" (1/1) ... [2021-02-21 16:24:53,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:24:53" (1/1) ... [2021-02-21 16:24:53,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:24:53" (1/1) ... [2021-02-21 16:24:53,393 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:24:53" (1/1) ... [2021-02-21 16:24:53,398 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:24:53" (1/1) ... [2021-02-21 16:24:53,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:24:53" (1/1) ... [2021-02-21 16:24:53,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:24:53,404 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:24:53,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:24:53,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:24:53,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:24:53" (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 16:24:53,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:24:53,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:24:53,506 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:24:53,506 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:24:53,506 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-21 16:24:53,507 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:24:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:24:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:24:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:24:53,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:24:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:24:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-21 16:24:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:24:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:24:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:24:53,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:24:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:24:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:24:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:24:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:24:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:24:53,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:24:53,930 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:24:53,931 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-21 16:24:53,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:24:53 BoogieIcfgContainer [2021-02-21 16:24:53,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:24:53,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:24:53,952 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:24:53,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:24:53,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:24:53" (1/3) ... [2021-02-21 16:24:53,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231ee416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:24:53, skipping insertion in model container [2021-02-21 16:24:53,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:24:53" (2/3) ... [2021-02-21 16:24:53,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@231ee416 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:24:53, skipping insertion in model container [2021-02-21 16:24:53,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:24:53" (3/3) ... [2021-02-21 16:24:53,961 INFO L111 eAbstractionObserver]: Analyzing ICFG brs4f.c [2021-02-21 16:24:53,971 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:24:53,975 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:24:53,994 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:24:54,021 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:24:54,021 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:24:54,021 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:24:54,021 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:24:54,022 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:24:54,022 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:24:54,022 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:24:54,022 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:24:54,040 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2021-02-21 16:24:54,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-21 16:24:54,046 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:24:54,046 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] [2021-02-21 16:24:54,047 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:24:54,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:24:54,053 INFO L82 PathProgramCache]: Analyzing trace with hash 816154861, now seen corresponding path program 1 times [2021-02-21 16:24:54,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:24:54,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997832737] [2021-02-21 16:24:54,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:24:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:24:54,254 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:24:54,255 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:24:54,261 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:24:54,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:24:54,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:24:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:24:54,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:24:54,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:24:54,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:24:54,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:24:54,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:24:54,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:24:54,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:24:54,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:24:54,389 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 16:24:54,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997832737] [2021-02-21 16:24:54,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:24:54,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:24:54,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951010123] [2021-02-21 16:24:54,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:24:54,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:24:54,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:24:54,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:24:54,419 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 3 states. [2021-02-21 16:24:54,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:24:54,516 INFO L93 Difference]: Finished difference Result 56 states and 71 transitions. [2021-02-21 16:24:54,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:24:54,518 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-02-21 16:24:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:24:54,527 INFO L225 Difference]: With dead ends: 56 [2021-02-21 16:24:54,527 INFO L226 Difference]: Without dead ends: 26 [2021-02-21 16:24:54,530 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 [2021-02-21 16:24:54,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-02-21 16:24:54,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-02-21 16:24:54,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-02-21 16:24:54,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 29 transitions. [2021-02-21 16:24:54,574 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 29 transitions. Word has length 21 [2021-02-21 16:24:54,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:24:54,575 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 29 transitions. [2021-02-21 16:24:54,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:24:54,575 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 29 transitions. [2021-02-21 16:24:54,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-21 16:24:54,576 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:24:54,577 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] [2021-02-21 16:24:54,577 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:24:54,577 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:24:54,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:24:54,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1231644863, now seen corresponding path program 1 times [2021-02-21 16:24:54,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:24:54,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275420144] [2021-02-21 16:24:54,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:24:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:24:54,639 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:24:54,640 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:24:54,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:24:54,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:24:54,653 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:24:54,656 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:24:54,668 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:24:54,668 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:24:54,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:24:54,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:24:54,742 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:24:54,744 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:24:54,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-21 16:24:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:24:54,766 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:24:54,767 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:24:54,772 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 16:24:54,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275420144] [2021-02-21 16:24:54,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:24:54,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:24:54,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536918150] [2021-02-21 16:24:54,774 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:24:54,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:24:54,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:24:54,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:24:54,778 INFO L87 Difference]: Start difference. First operand 26 states and 29 transitions. Second operand 5 states. [2021-02-21 16:24:54,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:24:54,931 INFO L93 Difference]: Finished difference Result 45 states and 55 transitions. [2021-02-21 16:24:54,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 16:24:54,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-02-21 16:24:54,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:24:54,933 INFO L225 Difference]: With dead ends: 45 [2021-02-21 16:24:54,933 INFO L226 Difference]: Without dead ends: 32 [2021-02-21 16:24:54,934 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 16:24:54,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-02-21 16:24:54,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2021-02-21 16:24:54,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-02-21 16:24:54,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-02-21 16:24:54,944 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 21 [2021-02-21 16:24:54,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:24:54,945 INFO L480 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-02-21 16:24:54,945 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:24:54,945 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-02-21 16:24:54,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-02-21 16:24:54,946 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:24:54,947 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] [2021-02-21 16:24:54,947 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:24:54,947 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:24:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:24:54,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1305126266, now seen corresponding path program 1 times [2021-02-21 16:24:54,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:24:54,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964259580] [2021-02-21 16:24:54,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:24:54,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:24:54,994 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:24:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:24:55,070 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:24:55,114 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:24:55,115 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:24:55,116 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:24:55,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:24:55 BoogieIcfgContainer [2021-02-21 16:24:55,192 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:24:55,193 INFO L168 Benchmark]: Toolchain (without parser) took 2089.70 ms. Allocated memory is still 162.5 MB. Free memory was 138.1 MB in the beginning and 75.1 MB in the end (delta: 63.0 MB). Peak memory consumption was 64.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:24:55,194 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 162.5 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:24:55,195 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.18 ms. Allocated memory is still 162.5 MB. Free memory was 137.0 MB in the beginning and 127.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-21 16:24:55,196 INFO L168 Benchmark]: Boogie Preprocessor took 40.17 ms. Allocated memory is still 162.5 MB. Free memory was 127.1 MB in the beginning and 125.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:24:55,197 INFO L168 Benchmark]: RCFGBuilder took 529.16 ms. Allocated memory is still 162.5 MB. Free memory was 125.5 MB in the beginning and 109.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-21 16:24:55,198 INFO L168 Benchmark]: TraceAbstraction took 1240.64 ms. Allocated memory is still 162.5 MB. Free memory was 145.0 MB in the beginning and 75.1 MB in the end (delta: 69.9 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. [2021-02-21 16:24:55,201 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 162.5 MB. Free memory is still 133.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 245.18 ms. Allocated memory is still 162.5 MB. Free memory was 137.0 MB in the beginning and 127.1 MB in the end (delta: 9.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 40.17 ms. Allocated memory is still 162.5 MB. Free memory was 127.1 MB in the beginning and 125.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 529.16 ms. Allocated memory is still 162.5 MB. Free memory was 125.5 MB in the beginning and 109.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1240.64 ms. Allocated memory is still 162.5 MB. Free memory was 145.0 MB in the beginning and 75.1 MB in the end (delta: 69.9 MB). Peak memory consumption was 70.3 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)=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