/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 11:56:11,805 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 11:56:11,808 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 11:56:11,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 11:56:11,861 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 11:56:11,863 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 11:56:11,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 11:56:11,865 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 11:56:11,867 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 11:56:11,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 11:56:11,870 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 11:56:11,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 11:56:11,896 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 11:56:11,898 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 11:56:11,898 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 11:56:11,900 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 11:56:11,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 11:56:11,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 11:56:11,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 11:56:11,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 11:56:11,917 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 [2021-05-02 11:56:11,948 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 11:56:11,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 11:56:11,951 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-05-02 11:56:11,951 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-05-02 11:56:11,951 INFO L138 SettingsManager]: * Use SBE=true [2021-05-02 11:56:11,951 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 11:56:11,951 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 11:56:11,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 11:56:11,952 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 11:56:11,952 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 11:56:11,952 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 11:56:11,953 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 11:56:11,953 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 11:56:11,953 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 11:56:11,953 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 11:56:11,953 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 11:56:11,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 11:56:11,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 11:56:11,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 11:56:11,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 11:56:11,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 11:56:11,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 11:56:11,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-05-02 11:56:11,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-05-02 11:56:11,954 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 11:56:11,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-05-02 11:56:11,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 11:56:11,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-05-02 11:56:11,955 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 11:56:12,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 11:56:12,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 11:56:12,290 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 11:56:12,291 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 11:56:12,292 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 11:56:12,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c [2021-05-02 11:56:12,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d69007d/0629901c5d4948b993d7768f31558e09/FLAG97df53d69 [2021-05-02 11:56:12,697 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 11:56:12,697 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c [2021-05-02 11:56:12,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d69007d/0629901c5d4948b993d7768f31558e09/FLAG97df53d69 [2021-05-02 11:56:12,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d69007d/0629901c5d4948b993d7768f31558e09 [2021-05-02 11:56:12,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 11:56:12,729 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 11:56:12,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 11:56:12,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 11:56:12,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 11:56:12,736 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:56:12" (1/1) ... [2021-05-02 11:56:12,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dd3365c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:56:12, skipping insertion in model container [2021-05-02 11:56:12,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:56:12" (1/1) ... [2021-05-02 11:56:12,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 11:56:12,753 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 11:56:12,867 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c[320,333] [2021-05-02 11:56:12,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 11:56:12,886 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 11:56:12,904 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c[320,333] [2021-05-02 11:56:12,927 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 11:56:12,941 INFO L208 MainTranslator]: Completed translation [2021-05-02 11:56:12,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:56:12 WrapperNode [2021-05-02 11:56:12,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 11:56:12,943 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 11:56:12,943 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 11:56:12,944 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 11:56:12,951 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:56:12" (1/1) ... [2021-05-02 11:56:12,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:56:12" (1/1) ... [2021-05-02 11:56:12,957 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:56:12" (1/1) ... [2021-05-02 11:56:12,957 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:56:12" (1/1) ... [2021-05-02 11:56:12,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:56:12" (1/1) ... [2021-05-02 11:56:12,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:56:12" (1/1) ... [2021-05-02 11:56:12,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:56:12" (1/1) ... [2021-05-02 11:56:12,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 11:56:12,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 11:56:12,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 11:56:12,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 11:56:12,979 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:56:12" (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 [2021-05-02 11:56:13,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 11:56:13,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 11:56:13,046 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 11:56:13,047 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 11:56:13,047 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 11:56:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 11:56:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 11:56:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 11:56:13,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 11:56:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 11:56:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 11:56:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-02 11:56:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 11:56:13,048 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 11:56:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 11:56:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 11:56:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 11:56:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 11:56:13,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 11:56:13,263 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 11:56:13,272 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 11:56:13,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:56:13 BoogieIcfgContainer [2021-05-02 11:56:13,274 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 11:56:13,275 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 11:56:13,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 11:56:13,280 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 11:56:13,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:56:12" (1/3) ... [2021-05-02 11:56:13,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c25c14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:56:13, skipping insertion in model container [2021-05-02 11:56:13,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:56:12" (2/3) ... [2021-05-02 11:56:13,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c25c14d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:56:13, skipping insertion in model container [2021-05-02 11:56:13,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:56:13" (3/3) ... [2021-05-02 11:56:13,284 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2021-05-02 11:56:13,288 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-05-02 11:56:13,290 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 11:56:13,311 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 11:56:13,336 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 11:56:13,336 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 11:56:13,336 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-05-02 11:56:13,336 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 11:56:13,337 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 11:56:13,337 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 11:56:13,337 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 11:56:13,337 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 11:56:13,348 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 11:56:13,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 11:56:13,351 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:56:13,351 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:56:13,351 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:56:13,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:56:13,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1016564801, now seen corresponding path program 1 times [2021-05-02 11:56:13,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:56:13,360 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406074593] [2021-05-02 11:56:13,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:56:13,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:56:13,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 11:56:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 11:56:13,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 11:56:13,543 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 11:56:13,543 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406074593] [2021-05-02 11:56:13,543 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406074593] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 11:56:13,544 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 11:56:13,544 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 11:56:13,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816457412] [2021-05-02 11:56:13,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 11:56:13,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 11:56:13,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 11:56:13,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 11:56:13,557 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.4285714285714286) internal successors, (20), 15 states have internal predecessors, (20), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:56:13,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 11:56:13,590 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-05-02 11:56:13,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 11:56:13,592 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-05-02 11:56:13,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 11:56:13,595 INFO L225 Difference]: With dead ends: 34 [2021-05-02 11:56:13,596 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 11:56:13,597 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 11:56:13,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 11:56:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 11:56:13,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:56:13,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-05-02 11:56:13,619 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-05-02 11:56:13,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 11:56:13,619 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-05-02 11:56:13,619 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 11:56:13,619 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-05-02 11:56:13,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 11:56:13,620 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 11:56:13,620 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 11:56:13,620 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 11:56:13,620 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 11:56:13,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 11:56:13,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1031341137, now seen corresponding path program 1 times [2021-05-02 11:56:13,621 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 11:56:13,621 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100419714] [2021-05-02 11:56:13,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 11:56:13,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 11:56:13,663 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 11:56:13,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 11:56:13,684 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 11:56:13,711 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-05-02 11:56:13,712 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 11:56:13,712 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 11:56:13,728 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:56:13 BoogieIcfgContainer [2021-05-02 11:56:13,728 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 11:56:13,729 INFO L168 Benchmark]: Toolchain (without parser) took 999.84 ms. Allocated memory is still 209.7 MB. Free memory was 173.4 MB in the beginning and 145.5 MB in the end (delta: 27.9 MB). Peak memory consumption was 27.7 MB. Max. memory is 8.0 GB. [2021-05-02 11:56:13,730 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 209.7 MB. Free memory is still 190.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 11:56:13,730 INFO L168 Benchmark]: CACSL2BoogieTranslator took 209.34 ms. Allocated memory is still 209.7 MB. Free memory was 173.2 MB in the beginning and 192.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. [2021-05-02 11:56:13,730 INFO L168 Benchmark]: Boogie Preprocessor took 34.60 ms. Allocated memory is still 209.7 MB. Free memory was 192.6 MB in the beginning and 191.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 11:56:13,731 INFO L168 Benchmark]: RCFGBuilder took 295.11 ms. Allocated memory is still 209.7 MB. Free memory was 191.2 MB in the beginning and 176.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 11:56:13,731 INFO L168 Benchmark]: TraceAbstraction took 452.82 ms. Allocated memory is still 209.7 MB. Free memory was 176.2 MB in the beginning and 145.5 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2021-05-02 11:56:13,733 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 209.7 MB. Free memory is still 190.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 209.34 ms. Allocated memory is still 209.7 MB. Free memory was 173.2 MB in the beginning and 192.6 MB in the end (delta: -19.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.60 ms. Allocated memory is still 209.7 MB. Free memory was 192.6 MB in the beginning and 191.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 295.11 ms. Allocated memory is still 209.7 MB. Free memory was 191.2 MB in the beginning and 176.5 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 452.82 ms. Allocated memory is still 209.7 MB. Free memory was 176.2 MB in the beginning and 145.5 MB in the end (delta: 30.8 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L17] unsigned int x1=__VERIFIER_nondet_uint(), x2=__VERIFIER_nondet_uint(), x3=__VERIFIER_nondet_uint(); [L18] unsigned int d1=1, d2=1, d3=1; [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L19] _Bool c1=__VERIFIER_nondet_bool(), c2=__VERIFIER_nondet_bool(); [L21] COND FALSE !(x1>0 && x2>0 && x3>0) VAL [c1=4294967299, c2=4294967301, d1=1, d2=1, d3=1, x1=4294967297, x2=0, x3=0] [L30] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==0) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 386.8ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 5.4ms, AutomataDifference: 49.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 22 SDtfs, 15 SDslu, 3 SDs, 0 SdLazy, 4 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 15.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 12.2ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 21.9ms SsaConstructionTime, 50.5ms SatisfiabilityAnalysisTime, 106.1ms InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...