/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops/terminator_03-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 20:33:52,939 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 20:33:52,941 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 20:33:52,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-14 20:33:52,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 20:33:52,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 20:33:52,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 20:33:53,001 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 20:33:53,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 20:33:53,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 20:33:53,008 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 20:33:53,010 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 20:33:53,011 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 20:33:53,015 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 20:33:53,016 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 20:33:53,017 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 20:33:53,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 20:33:53,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 20:33:53,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 20:33:53,026 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 20:33:53,032 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 20:33:53,046 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 20:33:53,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 20:33:53,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 20:33:53,048 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 20:33:53,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 20:33:53,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 20:33:53,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 20:33:53,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 20:33:53,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 20:33:53,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 20:33:53,049 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 20:33:53,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 20:33:53,050 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 20:33:53,050 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 20:33:53,050 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 20:33:53,050 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 20:33:53,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 20:33:53,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 20:33:53,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:33:53,053 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 20:33:53,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 20:33:53,054 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 20:33:53,054 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 20:33:53,289 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 20:33:53,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 20:33:53,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 20:33:53,310 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 20:33:53,310 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 20:33:53,311 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/terminator_03-2.i [2022-02-14 20:33:53,368 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c322aeac2/c5aef15326234e52a37f4945fc100e4f/FLAG78744ffdc [2022-02-14 20:33:53,721 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 20:33:53,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-2.i [2022-02-14 20:33:53,738 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c322aeac2/c5aef15326234e52a37f4945fc100e4f/FLAG78744ffdc [2022-02-14 20:33:54,118 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c322aeac2/c5aef15326234e52a37f4945fc100e4f [2022-02-14 20:33:54,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 20:33:54,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 20:33:54,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 20:33:54,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 20:33:54,130 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 20:33:54,131 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:33:54" (1/1) ... [2022-02-14 20:33:54,131 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ac08a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:54, skipping insertion in model container [2022-02-14 20:33:54,132 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:33:54" (1/1) ... [2022-02-14 20:33:54,136 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 20:33:54,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 20:33:54,274 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-2.i[902,915] [2022-02-14 20:33:54,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:33:54,287 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 20:33:54,296 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/terminator_03-2.i[902,915] [2022-02-14 20:33:54,298 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:33:54,308 INFO L208 MainTranslator]: Completed translation [2022-02-14 20:33:54,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:54 WrapperNode [2022-02-14 20:33:54,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 20:33:54,309 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 20:33:54,309 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 20:33:54,309 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 20:33:54,316 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:54" (1/1) ... [2022-02-14 20:33:54,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:54" (1/1) ... [2022-02-14 20:33:54,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:54" (1/1) ... [2022-02-14 20:33:54,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:54" (1/1) ... [2022-02-14 20:33:54,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:54" (1/1) ... [2022-02-14 20:33:54,326 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:54" (1/1) ... [2022-02-14 20:33:54,327 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:54" (1/1) ... [2022-02-14 20:33:54,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 20:33:54,329 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 20:33:54,329 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 20:33:54,329 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 20:33:54,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:54" (1/1) ... [2022-02-14 20:33:54,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:33:54,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:33:54,358 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-02-14 20:33:54,364 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-02-14 20:33:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 20:33:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 20:33:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 20:33:54,394 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-14 20:33:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 20:33:54,395 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 20:33:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 20:33:54,395 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 20:33:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-14 20:33:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-14 20:33:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 20:33:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 20:33:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-14 20:33:54,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 20:33:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-14 20:33:54,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-02-14 20:33:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 20:33:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 20:33:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 20:33:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 20:33:54,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 20:33:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 20:33:54,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 20:33:54,450 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 20:33:54,451 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 20:33:54,524 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 20:33:54,529 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 20:33:54,529 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 20:33:54,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:33:54 BoogieIcfgContainer [2022-02-14 20:33:54,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 20:33:54,531 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 20:33:54,531 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 20:33:54,532 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 20:33:54,535 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:33:54" (1/1) ... [2022-02-14 20:33:54,691 WARN L907 QuantifierPusher]: no eliminatee completely removed, nonetheless the elimination was considered successful [2022-02-14 20:33:54,872 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-02-14 20:33:54,873 INFO L91 elerationTransformer]: Accelerated Formula: (and (< v_main_~x~0_5 100) (= v_main_~x~0_4 (+ v_main_~x~0_5 v_main_~y~0_7))) InVars {main_~x~0=v_main_~x~0_5, main_~y~0=v_main_~y~0_7} OutVars{main_~x~0=v_main_~x~0_4, main_~y~0=v_main_~y~0_7} AuxVars[] AssignedVars[main_~x~0] to Formula: (let ((.cse0 (= v_main_~x~0_5 v_main_~x~0_4))) (or (and (< v_main_~x~0_5 100) (let ((.cse1 (= v_main_~y~0_7 0))) (or (and .cse0 .cse1) (let ((.cse2 (+ v_main_~x~0_4 (* (- 1) v_main_~x~0_5)))) (and (= (mod .cse2 v_main_~y~0_7) 0) (not .cse1) (forall ((v_it_1 Int)) (or (not (<= (+ v_it_1 1) (div (+ v_main_~x~0_4 (* (- 1) v_main_~x~0_5)) v_main_~y~0_7))) (< (+ v_main_~x~0_5 (* v_main_~y~0_7 v_it_1)) 100) (not (<= 1 v_it_1)))) (< 0 (div .cse2 v_main_~y~0_7))))))) (and .cse0 (<= 100 v_main_~x~0_5)))) InVars {main_~x~0=v_main_~x~0_5, main_~y~0=v_main_~y~0_7} OutVars{main_~x~0=v_main_~x~0_4, main_~y~0=v_main_~y~0_7} AuxVars[] AssignedVars[main_~x~0] [2022-02-14 20:33:54,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:33:54 BasicIcfg [2022-02-14 20:33:54,878 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 20:33:54,879 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 20:33:54,879 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 20:33:54,883 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 20:33:54,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 08:33:54" (1/4) ... [2022-02-14 20:33:54,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3365e8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:33:54, skipping insertion in model container [2022-02-14 20:33:54,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:33:54" (2/4) ... [2022-02-14 20:33:54,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3365e8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:33:54, skipping insertion in model container [2022-02-14 20:33:54,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:33:54" (3/4) ... [2022-02-14 20:33:54,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3365e8df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:33:54, skipping insertion in model container [2022-02-14 20:33:54,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:33:54" (4/4) ... [2022-02-14 20:33:54,886 INFO L111 eAbstractionObserver]: Analyzing ICFG terminator_03-2.iJordan [2022-02-14 20:33:54,891 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 20:33:54,891 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 20:33:54,928 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 20:33:54,934 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 20:33:54,934 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 20:33:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-02-14 20:33:54,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 20:33:54,949 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:33:54,950 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:33:54,950 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:33:54,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:33:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash 196075422, now seen corresponding path program 1 times [2022-02-14 20:33:54,961 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:33:54,961 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805972213] [2022-02-14 20:33:54,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:33:54,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:33:55,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:55,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:33:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:33:55,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:33:55,167 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:33:55,168 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805972213] [2022-02-14 20:33:55,168 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805972213] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:33:55,168 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:33:55,169 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-14 20:33:55,170 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475101293] [2022-02-14 20:33:55,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:33:55,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-14 20:33:55,174 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:33:55,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-14 20:33:55,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-14 20:33:55,212 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-02-14 20:33:55,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:33:55,308 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2022-02-14 20:33:55,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-14 20:33:55,310 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2022-02-14 20:33:55,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:33:55,317 INFO L225 Difference]: With dead ends: 21 [2022-02-14 20:33:55,318 INFO L226 Difference]: Without dead ends: 0 [2022-02-14 20:33:55,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-02-14 20:33:55,325 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 19 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 20:33:55,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 41 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 42 Invalid, 0 Unknown, 3 Unchecked, 0.0s Time] [2022-02-14 20:33:55,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-14 20:33:55,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-14 20:33:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-14 20:33:55,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-14 20:33:55,346 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-02-14 20:33:55,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:33:55,347 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-14 20:33:55,347 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-02-14 20:33:55,347 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-14 20:33:55,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-14 20:33:55,350 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-14 20:33:55,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 20:33:55,353 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-02-14 20:33:55,354 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-14 20:33:55,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:33:55 BasicIcfg [2022-02-14 20:33:55,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-14 20:33:55,361 INFO L158 Benchmark]: Toolchain (without parser) took 1239.66ms. Allocated memory is still 201.3MB. Free memory was 149.4MB in the beginning and 128.6MB in the end (delta: 20.7MB). Peak memory consumption was 20.5MB. Max. memory is 8.0GB. [2022-02-14 20:33:55,362 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 165.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-14 20:33:55,362 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.04ms. Allocated memory is still 201.3MB. Free memory was 149.2MB in the beginning and 179.0MB in the end (delta: -29.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-14 20:33:55,365 INFO L158 Benchmark]: Boogie Preprocessor took 18.99ms. Allocated memory is still 201.3MB. Free memory was 179.0MB in the beginning and 177.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-14 20:33:55,366 INFO L158 Benchmark]: RCFGBuilder took 202.06ms. Allocated memory is still 201.3MB. Free memory was 177.5MB in the beginning and 167.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-14 20:33:55,368 INFO L158 Benchmark]: IcfgTransformer took 346.45ms. Allocated memory is still 201.3MB. Free memory was 167.4MB in the beginning and 153.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-02-14 20:33:55,368 INFO L158 Benchmark]: TraceAbstraction took 481.36ms. Allocated memory is still 201.3MB. Free memory was 153.4MB in the beginning and 128.6MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-02-14 20:33:55,373 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 165.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.04ms. Allocated memory is still 201.3MB. Free memory was 149.2MB in the beginning and 179.0MB in the end (delta: -29.8MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.99ms. Allocated memory is still 201.3MB. Free memory was 179.0MB in the beginning and 177.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 202.06ms. Allocated memory is still 201.3MB. Free memory was 177.5MB in the beginning and 167.4MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 346.45ms. Allocated memory is still 201.3MB. Free memory was 167.4MB in the beginning and 153.8MB in the end (delta: 13.6MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 481.36ms. Allocated memory is still 201.3MB. Free memory was 153.4MB in the beginning and 128.6MB in the end (delta: 24.7MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 41 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 3 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 42 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 20 mSDtfsCounter, 42 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 29 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-02-14 20:33:55,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...