/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/trex03-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 23:15:48,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 23:15:48,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 23:15:48,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-05-02 23:15:48,651 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 23:15:48,653 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 23:15:48,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 23:15:48,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 23:15:48,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 23:15:48,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 23:15:48,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 23:15:48,670 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 23:15:48,672 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 23:15:48,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 23:15:48,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 23:15:48,676 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 23:15:48,680 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 23:15:48,687 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 23:15:48,688 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 23:15:48,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 23:15:48,690 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-05-02 23:15:48,717 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 23:15:48,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 23:15:48,722 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 23:15:48,723 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 23:15:48,723 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 23:15:48,723 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 23:15:48,723 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 23:15:48,723 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 23:15:48,723 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 23:15:48,723 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 23:15:48,725 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 23:15:48,726 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 23:15:48,726 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 23:15:48,726 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 23:15:48,726 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 23:15:48,726 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 23:15:48,726 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 23:15:48,727 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 23:15:48,727 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 23:15:48,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 23:15:48,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-05-02 23:15:48,727 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-05-02 23:15:48,727 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-05-02 23:15:48,727 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 23:15:49,149 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 23:15:49,179 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 23:15:49,182 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 23:15:49,185 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 23:15:49,185 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 23:15:49,186 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex03-1.c [2021-05-02 23:15:49,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/524441521/202548eb09c2491bb00d06867b92ff89/FLAGbed472f0f [2021-05-02 23:15:49,716 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 23:15:49,717 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/trex03-1.c [2021-05-02 23:15:49,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/524441521/202548eb09c2491bb00d06867b92ff89/FLAGbed472f0f [2021-05-02 23:15:50,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/524441521/202548eb09c2491bb00d06867b92ff89 [2021-05-02 23:15:50,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 23:15:50,117 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-05-02 23:15:50,137 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 23:15:50,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 23:15:50,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 23:15:50,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:15:50" (1/1) ... [2021-05-02 23:15:50,143 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b187106 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:15:50, skipping insertion in model container [2021-05-02 23:15:50,143 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 11:15:50" (1/1) ... [2021-05-02 23:15:50,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 23:15:50,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 23:15:50,302 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 23:15:50,321 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:15:50,328 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 23:15:50,340 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 23:15:50,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 23:15:50,394 INFO L208 MainTranslator]: Completed translation [2021-05-02 23:15:50,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:15:50 WrapperNode [2021-05-02 23:15:50,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 23:15:50,396 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 23:15:50,396 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 23:15:50,396 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 23:15:50,408 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:15:50" (1/1) ... [2021-05-02 23:15:50,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:15:50" (1/1) ... [2021-05-02 23:15:50,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:15:50" (1/1) ... [2021-05-02 23:15:50,415 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:15:50" (1/1) ... [2021-05-02 23:15:50,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:15:50" (1/1) ... [2021-05-02 23:15:50,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:15:50" (1/1) ... [2021-05-02 23:15:50,431 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:15:50" (1/1) ... [2021-05-02 23:15:50,437 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 23:15:50,440 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 23:15:50,440 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 23:15:50,440 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 23:15:50,442 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:15:50" (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 23:15:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 23:15:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 23:15:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 23:15:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 23:15:50,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 23:15:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 23:15:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 23:15:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 23:15:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 23:15:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 23:15:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-05-02 23:15:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-05-02 23:15:50,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 23:15:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 23:15:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 23:15:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 23:15:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 23:15:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 23:15:50,525 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 23:15:50,829 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 23:15:50,829 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 23:15:50,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:15:50 BoogieIcfgContainer [2021-05-02 23:15:50,830 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 23:15:50,832 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 23:15:50,832 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 23:15:50,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 23:15:50,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 11:15:50" (1/3) ... [2021-05-02 23:15:50,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a11e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:15:50, skipping insertion in model container [2021-05-02 23:15:50,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 11:15:50" (2/3) ... [2021-05-02 23:15:50,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21a11e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 11:15:50, skipping insertion in model container [2021-05-02 23:15:50,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 11:15:50" (3/3) ... [2021-05-02 23:15:50,854 INFO L111 eAbstractionObserver]: Analyzing ICFG trex03-1.c [2021-05-02 23:15:50,860 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-05-02 23:15:50,863 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 23:15:50,895 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 23:15:50,924 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 23:15:50,925 INFO L377 AbstractCegarLoop]: Hoare is true [2021-05-02 23:15:50,925 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-05-02 23:15:50,925 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 23:15:50,925 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 23:15:50,925 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 23:15:50,925 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 23:15:50,925 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 23:15:50,952 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 23:15:50,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:15:50,959 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:15:50,959 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:15:50,959 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:15:50,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:15:50,964 INFO L82 PathProgramCache]: Analyzing trace with hash -1016564801, now seen corresponding path program 1 times [2021-05-02 23:15:50,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:15:50,972 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551247784] [2021-05-02 23:15:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:15:51,041 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:15:51,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:15:51,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 23:15:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 23:15:51,267 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 23:15:51,269 INFO L179 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2021-05-02 23:15:51,272 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551247784] [2021-05-02 23:15:51,274 INFO L200 FreeRefinementEngine]: IpTcStrategyModulePreferences [551247784] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 23:15:51,274 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 23:15:51,275 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 23:15:51,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968892485] [2021-05-02 23:15:51,281 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 23:15:51,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-05-02 23:15:51,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 23:15:51,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:15:51,297 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 23:15:51,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 23:15:51,394 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2021-05-02 23:15:51,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 23:15:51,396 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 23:15:51,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 23:15:51,403 INFO L225 Difference]: With dead ends: 34 [2021-05-02 23:15:51,403 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 23:15:51,407 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.1ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 23:15:51,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 23:15:51,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 23:15:51,452 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 23:15:51,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-05-02 23:15:51,457 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-05-02 23:15:51,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 23:15:51,457 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-05-02 23:15:51,457 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 23:15:51,458 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-05-02 23:15:51,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 23:15:51,458 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 23:15:51,459 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 23:15:51,459 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 23:15:51,459 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 23:15:51,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 23:15:51,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1031341137, now seen corresponding path program 1 times [2021-05-02 23:15:51,462 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-05-02 23:15:51,463 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1398985245] [2021-05-02 23:15:51,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 23:15:51,476 INFO L224 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-05-02 23:15:51,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 23:15:51,535 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 23:15:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-05-02 23:15:51,580 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-05-02 23:15:51,619 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-05-02 23:15:51,619 INFO L624 BasicCegarLoop]: Counterexample might be feasible [2021-05-02 23:15:51,619 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 23:15:51,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 11:15:51 BoogieIcfgContainer [2021-05-02 23:15:51,631 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 23:15:51,632 INFO L168 Benchmark]: Toolchain (without parser) took 1515.27 ms. Allocated memory is still 181.4 MB. Free memory was 146.5 MB in the beginning and 117.4 MB in the end (delta: 29.1 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. [2021-05-02 23:15:51,635 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 181.4 MB. Free memory was 163.1 MB in the beginning and 163.0 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 23:15:51,636 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.95 ms. Allocated memory is still 181.4 MB. Free memory was 146.3 MB in the beginning and 165.3 MB in the end (delta: -19.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 23:15:51,637 INFO L168 Benchmark]: Boogie Preprocessor took 42.10 ms. Allocated memory is still 181.4 MB. Free memory was 165.3 MB in the beginning and 163.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 23:15:51,638 INFO L168 Benchmark]: RCFGBuilder took 390.74 ms. Allocated memory is still 181.4 MB. Free memory was 163.6 MB in the beginning and 149.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-05-02 23:15:51,639 INFO L168 Benchmark]: TraceAbstraction took 799.23 ms. Allocated memory is still 181.4 MB. Free memory was 148.9 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 MB. Max. memory is 8.0 GB. [2021-05-02 23:15:51,641 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 181.4 MB. Free memory was 163.1 MB in the beginning and 163.0 MB in the end (delta: 105.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 257.95 ms. Allocated memory is still 181.4 MB. Free memory was 146.3 MB in the beginning and 165.3 MB in the end (delta: -19.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.10 ms. Allocated memory is still 181.4 MB. Free memory was 165.3 MB in the beginning and 163.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 390.74 ms. Allocated memory is still 181.4 MB. Free memory was 163.6 MB in the beginning and 149.5 MB in the end (delta: 14.0 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 799.23 ms. Allocated memory is still 181.4 MB. Free memory was 148.9 MB in the beginning and 117.4 MB in the end (delta: 31.5 MB). Peak memory consumption was 31.5 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) [L30] CALL __VERIFIER_assert(x1==0 && x2==0 && x3==0) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 697.7ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 24.6ms, AutomataDifference: 124.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 8.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 22 SDtfs, 15 SDslu, 3 SDs, 0 SdLazy, 4 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 28.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 68.1ms 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: 36.1ms AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...