/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/ms3f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:51:47,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:51:47,969 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:51:48,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:51:48,011 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:51:48,012 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:51:48,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:51:48,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:51:48,040 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:51:48,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:51:48,047 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:51:48,049 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:51:48,058 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:51:48,063 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:51:48,065 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:51:48,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:51:48,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:51:48,071 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:51:48,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:51:48,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:51:48,085 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:51:48,086 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:51:48,087 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:51:48,090 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:51:48,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:51:48,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:51:48,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:51:48,114 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:51:48,115 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 13:51:48,166 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:51:48,166 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:51:48,170 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:51:48,171 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:51:48,171 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:51:48,171 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:51:48,171 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:51:48,172 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:51:48,172 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:51:48,172 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:51:48,173 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:51:48,173 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:51:48,173 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:51:48,174 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:51:48,174 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:51:48,174 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:51:48,174 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:51:48,174 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:51:48,175 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:51:48,175 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:51:48,175 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:51:48,175 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:51:48,175 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:51:48,176 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:51:48,176 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:51:48,176 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:51:48,176 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:51:48,176 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:51:48,176 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:51:48,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:51:48,572 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:51:48,575 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:51:48,577 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:51:48,577 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:51:48,578 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms3f.c [2021-02-23 13:51:48,664 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65f07404d/b2f262fc0001435d80348083972ed95d/FLAG56183bfed [2021-02-23 13:51:49,358 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:51:49,359 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-fpi/ms3f.c [2021-02-23 13:51:49,366 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65f07404d/b2f262fc0001435d80348083972ed95d/FLAG56183bfed [2021-02-23 13:51:49,693 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/65f07404d/b2f262fc0001435d80348083972ed95d [2021-02-23 13:51:49,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:51:49,711 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:51:49,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:49,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:51:49,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:51:49,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:49" (1/1) ... [2021-02-23 13:51:49,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a6b6042 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:49, skipping insertion in model container [2021-02-23 13:51:49,719 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:51:49" (1/1) ... [2021-02-23 13:51:49,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:51:49,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:51:49,920 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/ms3f.c[587,600] [2021-02-23 13:51:49,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:49,949 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:51:49,965 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/ms3f.c[587,600] [2021-02-23 13:51:49,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:51:49,990 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:51:49,991 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:49 WrapperNode [2021-02-23 13:51:49,991 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:51:49,992 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:51:49,992 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:51:49,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:51:50,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:49" (1/1) ... [2021-02-23 13:51:50,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:49" (1/1) ... [2021-02-23 13:51:50,015 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:49" (1/1) ... [2021-02-23 13:51:50,015 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:49" (1/1) ... [2021-02-23 13:51:50,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:49" (1/1) ... [2021-02-23 13:51:50,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:49" (1/1) ... [2021-02-23 13:51:50,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:49" (1/1) ... [2021-02-23 13:51:50,034 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:51:50,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:51:50,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:51:50,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:51:50,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:49" (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 13:51:50,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:51:50,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:51:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:51:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:51:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:51:50,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:51:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:51:50,195 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:51:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:51:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:51:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:51:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:51:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:51:50,196 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 13:51:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:51:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 13:51:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:51:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:51:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:51:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:51:50,197 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:51:50,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:51:50,505 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:51:50,506 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 13:51:50,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:50 BoogieIcfgContainer [2021-02-23 13:51:50,512 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:51:50,517 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:51:50,517 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:51:50,520 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:51:50,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:51:49" (1/3) ... [2021-02-23 13:51:50,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380d60ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:50, skipping insertion in model container [2021-02-23 13:51:50,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:51:49" (2/3) ... [2021-02-23 13:51:50,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@380d60ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:51:50, skipping insertion in model container [2021-02-23 13:51:50,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:51:50" (3/3) ... [2021-02-23 13:51:50,532 INFO L111 eAbstractionObserver]: Analyzing ICFG ms3f.c [2021-02-23 13:51:50,545 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:51:50,555 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:51:50,588 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:51:50,657 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:51:50,657 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:51:50,658 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:51:50,658 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:51:50,658 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:51:50,658 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:51:50,658 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:51:50,658 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:51:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2021-02-23 13:51:50,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:51:50,699 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:50,700 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 13:51:50,700 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:50,721 INFO L82 PathProgramCache]: Analyzing trace with hash 863653859, now seen corresponding path program 1 times [2021-02-23 13:51:50,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:50,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236901507] [2021-02-23 13:51:50,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:50,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:51,080 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:51,081 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:51,083 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:51,085 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:51,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:51,204 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:51,204 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:51,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:51,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:51,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:51,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:51,218 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:51,219 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:51,230 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 13:51:51,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236901507] [2021-02-23 13:51:51,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:51,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 13:51:51,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936932764] [2021-02-23 13:51:51,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 13:51:51,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:51,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 13:51:51,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 13:51:51,264 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2021-02-23 13:51:51,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:51,386 INFO L93 Difference]: Finished difference Result 54 states and 67 transitions. [2021-02-23 13:51:51,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 13:51:51,388 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2021-02-23 13:51:51,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:51,398 INFO L225 Difference]: With dead ends: 54 [2021-02-23 13:51:51,398 INFO L226 Difference]: Without dead ends: 25 [2021-02-23 13:51:51,403 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 13:51:51,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-02-23 13:51:51,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-02-23 13:51:51,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-02-23 13:51:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-02-23 13:51:51,459 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2021-02-23 13:51:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:51,460 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-02-23 13:51:51,460 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 13:51:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-02-23 13:51:51,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-02-23 13:51:51,462 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:51,462 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 13:51:51,462 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:51:51,462 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:51,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:51,463 INFO L82 PathProgramCache]: Analyzing trace with hash 1121819297, now seen corresponding path program 1 times [2021-02-23 13:51:51,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:51,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278900677] [2021-02-23 13:51:51,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:51,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:51,552 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:51,569 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:51,571 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:51,572 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:51:51,581 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:51,582 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 13:51:51,590 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:51,591 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:51,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:51:51,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:51,633 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:51,634 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:51,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-02-23 13:51:51,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:51:51,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:51:51,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:51:51,644 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 13:51:51,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278900677] [2021-02-23 13:51:51,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:51:51,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-23 13:51:51,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494559842] [2021-02-23 13:51:51,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-23 13:51:51,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:51:51,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-23 13:51:51,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-23 13:51:51,649 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2021-02-23 13:51:51,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:51:51,768 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2021-02-23 13:51:51,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-23 13:51:51,769 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2021-02-23 13:51:51,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:51:51,770 INFO L225 Difference]: With dead ends: 40 [2021-02-23 13:51:51,771 INFO L226 Difference]: Without dead ends: 30 [2021-02-23 13:51:51,772 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 [2021-02-23 13:51:51,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-02-23 13:51:51,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2021-02-23 13:51:51,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-02-23 13:51:51,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-02-23 13:51:51,781 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2021-02-23 13:51:51,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:51:51,781 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-02-23 13:51:51,781 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-23 13:51:51,781 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-02-23 13:51:51,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 13:51:51,783 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:51:51,783 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:51:51,783 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 13:51:51,783 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:51:51,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:51:51,784 INFO L82 PathProgramCache]: Analyzing trace with hash -667943349, now seen corresponding path program 1 times [2021-02-23 13:51:51,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:51:51,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009714475] [2021-02-23 13:51:51,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:51:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:51,853 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 13:51:51,910 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 13:51:51,941 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-23 13:51:51,941 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 13:51:51,942 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 13:51:51,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:51:51 BoogieIcfgContainer [2021-02-23 13:51:51,982 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:51:51,984 INFO L168 Benchmark]: Toolchain (without parser) took 2283.60 ms. Allocated memory was 167.8 MB in the beginning and 201.3 MB in the end (delta: 33.6 MB). Free memory was 148.4 MB in the beginning and 148.4 MB in the end (delta: -64.3 kB). Peak memory consumption was 32.8 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:51,984 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 167.8 MB. Free memory is still 139.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:51:51,985 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.28 ms. Allocated memory is still 167.8 MB. Free memory was 147.0 MB in the beginning and 136.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:51,986 INFO L168 Benchmark]: Boogie Preprocessor took 42.39 ms. Allocated memory is still 167.8 MB. Free memory was 136.7 MB in the beginning and 135.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:51,987 INFO L168 Benchmark]: RCFGBuilder took 476.29 ms. Allocated memory is still 167.8 MB. Free memory was 135.0 MB in the beginning and 135.8 MB in the end (delta: -738.7 kB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:51,988 INFO L168 Benchmark]: TraceAbstraction took 1465.61 ms. Allocated memory was 167.8 MB in the beginning and 201.3 MB in the end (delta: 33.6 MB). Free memory was 135.4 MB in the beginning and 148.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. [2021-02-23 13:51:51,992 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 167.8 MB. Free memory is still 139.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 279.28 ms. Allocated memory is still 167.8 MB. Free memory was 147.0 MB in the beginning and 136.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.39 ms. Allocated memory is still 167.8 MB. Free memory was 136.7 MB in the beginning and 135.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 476.29 ms. Allocated memory is still 167.8 MB. Free memory was 135.0 MB in the beginning and 135.8 MB in the end (delta: -738.7 kB). Peak memory consumption was 4.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1465.61 ms. Allocated memory was 167.8 MB in the beginning and 201.3 MB in the end (delta: 33.6 MB). Free memory was 135.4 MB in the beginning and 148.4 MB in the end (delta: -13.0 MB). Peak memory consumption was 21.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int N; VAL [\old(N)=118, N=0] [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) VAL [\old(N)=0, N=1] [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(cond)=1, \old(N)=0, N=1] [L13] COND FALSE !(!cond) VAL [\old(cond)=1, \old(N)=0, cond=1, N=1] [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) VAL [\old(N)=0, N=1] [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 VAL [\old(N)=0, a={-1:0}, i=0, malloc(sizeof(int)*N)={-1:0}, N=1, sum={9:0}] [L31] COND TRUE i 2*N) VAL [\old(cond)=0, \old(N)=0, N=1] [L15] COND TRUE !(cond) VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] [L15] reach_error() VAL [\old(cond)=0, \old(N)=0, cond=0, N=1] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.2s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 39 SDslu, 11 SDs, 0 SdLazy, 64 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 2320 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...