/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/loop-invgen/down.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:07:16,827 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:07:16,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:07:16,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:07:16,877 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:07:16,881 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:07:16,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:07:16,890 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:07:16,892 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:07:16,898 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:07:16,899 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:07:16,900 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:07:16,900 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:07:16,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:07:16,904 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:07:16,905 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:07:16,908 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:07:16,909 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:07:16,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:07:16,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:07:16,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:07:16,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:07:16,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:07:16,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:07:16,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:07:16,935 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:07:16,936 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:07:16,938 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:07:16,939 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:07:16,958 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:07:16,958 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:07:16,959 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:07:16,960 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:07:16,960 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:07:16,960 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:07:16,960 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:07:16,960 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:07:16,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:07:16,961 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:07:16,961 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:07:16,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:07:16,961 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:07:16,961 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:07:16,961 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:07:16,961 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:07:16,962 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:07:16,962 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:07:16,962 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:07:16,962 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:07:16,962 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:07:16,963 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:07:16,963 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:07:17,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:07:17,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:07:17,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:07:17,270 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:07:17,270 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:07:17,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/down.i [2021-05-02 18:07:17,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd6f316ab/d389759ee51e450b8439e99a43b7e286/FLAG2cabff33f [2021-05-02 18:07:17,967 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:07:17,968 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i [2021-05-02 18:07:17,973 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd6f316ab/d389759ee51e450b8439e99a43b7e286/FLAG2cabff33f [2021-05-02 18:07:18,335 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd6f316ab/d389759ee51e450b8439e99a43b7e286 [2021-05-02 18:07:18,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:07:18,338 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:07:18,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:07:18,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:07:18,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:07:18,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:07:18" (1/1) ... [2021-05-02 18:07:18,355 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@414781ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:07:18, skipping insertion in model container [2021-05-02 18:07:18,355 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:07:18" (1/1) ... [2021-05-02 18:07:18,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:07:18,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:07:18,476 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i[893,906] [2021-05-02 18:07:18,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:07:18,495 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:07:18,536 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/down.i[893,906] [2021-05-02 18:07:18,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:07:18,573 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:07:18,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:07:18 WrapperNode [2021-05-02 18:07:18,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:07:18,574 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:07:18,574 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:07:18,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:07:18,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:07:18" (1/1) ... [2021-05-02 18:07:18,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:07:18" (1/1) ... [2021-05-02 18:07:18,590 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:07:18" (1/1) ... [2021-05-02 18:07:18,590 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:07:18" (1/1) ... [2021-05-02 18:07:18,603 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:07:18" (1/1) ... [2021-05-02 18:07:18,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:07:18" (1/1) ... [2021-05-02 18:07:18,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:07:18" (1/1) ... [2021-05-02 18:07:18,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:07:18,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:07:18,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:07:18,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:07:18,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:07:18" (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 18:07:18,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:07:18,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:07:18,690 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:07:18,691 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:07:18,691 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:07:18,691 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:07:18,691 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:07:18,691 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:07:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 18:07:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 18:07:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:07:18,692 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:07:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:07:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:07:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:07:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:07:18,693 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:07:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:07:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:07:18,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:07:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:07:18,696 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:07:18,983 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:07:18,983 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-05-02 18:07:18,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:07:18 BoogieIcfgContainer [2021-05-02 18:07:18,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:07:18,985 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:07:18,985 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:07:18,985 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:07:18,987 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:07:18" (1/1) ... [2021-05-02 18:07:19,029 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~i~0_3 v_main_~n~0_2) InVars {main_~i~0=v_main_~i~0_3, main_~n~0=v_main_~n~0_2} OutVars{main_~i~0=v_main_~i~0_3, main_~n~0=v_main_~n~0_2} AuxVars[] AssignedVars[] [2021-05-02 18:07:19,050 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 89.1 percent of original size [2021-05-02 18:07:19,126 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 89.1 percent of original size 57 [2021-05-02 18:07:19,153 INFO L1112 elerationTransformer]: Accelerated Formula: (and (= v_main_~i~0_2 (+ v_main_~i~0_3 1)) (= (+ v_main_~k~0_5 1) v_main_~k~0_4) (< v_main_~i~0_3 v_main_~n~0_2)) InVars {main_~k~0=v_main_~k~0_5, main_~i~0=v_main_~i~0_3, main_~n~0=v_main_~n~0_2} OutVars{main_~k~0=v_main_~k~0_4, main_#t~post4=|v_main_#t~post4_1|, main_~i~0=v_main_~i~0_2, main_#t~post5=|v_main_#t~post5_1|, main_~n~0=v_main_~n~0_2} AuxVars[] AssignedVars[main_~k~0, main_#t~post4, main_~i~0, main_#t~post5] with Formula: (or (let ((.cse0 (+ v_itFin_1 v_main_~i~0_3))) (and (<= v_main_~n~0_2 .cse0) (= v_main_~i~0_2 .cse0) (= v_main_~k~0_4 (+ v_itFin_1 v_main_~k~0_5)) (< v_main_~i~0_3 v_main_~n~0_2) (< .cse0 (+ v_main_~n~0_2 1)))) (and (= v_main_~k~0_5 v_main_~k~0_4) (<= v_main_~n~0_2 v_main_~i~0_3) (= v_itFin_1 0) (= v_main_~i~0_3 v_main_~i~0_2) (= |v_main_#t~post4_3| |v_main_#t~post4_1|) (= |v_main_#t~post5_3| |v_main_#t~post5_1|))) InVars {main_~i~0=v_main_~i~0_3, main_#t~post4=|v_main_#t~post4_3|, main_#t~post5=|v_main_#t~post5_3|, main_~n~0=v_main_~n~0_2, main_~k~0=v_main_~k~0_5} OutVars{main_#t~post4=|v_main_#t~post4_1|, main_~i~0=v_main_~i~0_2, main_#t~post5=|v_main_#t~post5_1|, main_~n~0=v_main_~n~0_2, main_~k~0=v_main_~k~0_4} AuxVars[v_itFin_1] AssignedVars[main_~k~0, main_#t~post4, main_~i~0, main_#t~post5] [2021-05-02 18:07:19,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:07:19 BasicIcfg [2021-05-02 18:07:19,171 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:07:19,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:07:19,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:07:19,175 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:07:19,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:07:18" (1/4) ... [2021-05-02 18:07:19,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76eba18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:07:19, skipping insertion in model container [2021-05-02 18:07:19,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:07:18" (2/4) ... [2021-05-02 18:07:19,176 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76eba18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:07:19, skipping insertion in model container [2021-05-02 18:07:19,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:07:18" (3/4) ... [2021-05-02 18:07:19,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76eba18a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:07:19, skipping insertion in model container [2021-05-02 18:07:19,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:07:19" (4/4) ... [2021-05-02 18:07:19,178 INFO L111 eAbstractionObserver]: Analyzing ICFG down.iJordan [2021-05-02 18:07:19,183 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:07:19,187 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:07:19,200 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:07:19,214 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:07:19,214 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:07:19,214 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:07:19,214 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:07:19,214 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:07:19,214 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:07:19,214 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:07:19,214 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:07:19,228 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 18:07:19,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:07:19,235 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:07:19,235 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:07:19,236 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:07:19,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:07:19,243 INFO L82 PathProgramCache]: Analyzing trace with hash -257583399, now seen corresponding path program 1 times [2021-05-02 18:07:19,250 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:07:19,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723841829] [2021-05-02 18:07:19,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:07:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:07:19,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:07:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:07:19,423 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 18:07:19,425 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:07:19,425 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723841829] [2021-05-02 18:07:19,426 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723841829] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:07:19,426 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:07:19,426 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:07:19,426 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448178712] [2021-05-02 18:07:19,429 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:07:19,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:07:19,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:07:19,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:07:19,439 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 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 18:07:19,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:07:19,467 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2021-05-02 18:07:19,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:07:19,469 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 13 [2021-05-02 18:07:19,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:07:19,474 INFO L225 Difference]: With dead ends: 22 [2021-05-02 18:07:19,474 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 18:07:19,475 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:07:19,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 18:07:19,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 18:07:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 18:07:19,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-05-02 18:07:19,513 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2021-05-02 18:07:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:07:19,514 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-05-02 18:07:19,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 18:07:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-05-02 18:07:19,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:07:19,515 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:07:19,515 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:07:19,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:07:19,516 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:07:19,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:07:19,520 INFO L82 PathProgramCache]: Analyzing trace with hash 629920282, now seen corresponding path program 1 times [2021-05-02 18:07:19,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:07:19,520 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251983454] [2021-05-02 18:07:19,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:07:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:07:19,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:07:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:07:19,642 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 18:07:19,642 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:07:19,642 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251983454] [2021-05-02 18:07:19,642 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251983454] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:07:19,642 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:07:19,643 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-05-02 18:07:19,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130903416] [2021-05-02 18:07:19,644 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-05-02 18:07:19,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:07:19,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-05-02 18:07:19,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:07:19,645 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 18:07:19,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:07:19,760 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-05-02 18:07:19,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-05-02 18:07:19,761 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 13 [2021-05-02 18:07:19,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:07:19,761 INFO L225 Difference]: With dead ends: 20 [2021-05-02 18:07:19,761 INFO L226 Difference]: Without dead ends: 18 [2021-05-02 18:07:19,762 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 94.1ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-05-02 18:07:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-05-02 18:07:19,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-05-02 18:07:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-05-02 18:07:19,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-05-02 18:07:19,765 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 13 [2021-05-02 18:07:19,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:07:19,766 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-05-02 18:07:19,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 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 18:07:19,766 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-05-02 18:07:19,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 18:07:19,766 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:07:19,767 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:07:19,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:07:19,767 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:07:19,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:07:19,769 INFO L82 PathProgramCache]: Analyzing trace with hash -2067329569, now seen corresponding path program 1 times [2021-05-02 18:07:19,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:07:19,769 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604674366] [2021-05-02 18:07:19,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:07:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:07:19,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:07:19,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:07:19,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:07:19,920 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:07:19,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604674366] [2021-05-02 18:07:19,921 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604674366] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:07:19,921 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310707810] [2021-05-02 18:07:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:07:19,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:07:19,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 11 conjunts are in the unsatisfiable core [2021-05-02 18:07:19,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:07:20,015 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:07:20,033 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:07:20,046 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:07:20,056 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:07:20,064 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:07:20,080 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:07:20,121 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:07:20,129 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:07:20,156 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:07:20,165 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:07:20,169 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:07:20,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:07:20,212 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310707810] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:07:20,212 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 18:07:20,212 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8] total 14 [2021-05-02 18:07:20,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871272803] [2021-05-02 18:07:20,213 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-05-02 18:07:20,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:07:20,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-05-02 18:07:20,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-05-02 18:07:20,217 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:07:20,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:07:20,686 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2021-05-02 18:07:20,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-05-02 18:07:20,686 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2021-05-02 18:07:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:07:20,687 INFO L225 Difference]: With dead ends: 19 [2021-05-02 18:07:20,687 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:07:20,687 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 476.3ms TimeCoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2021-05-02 18:07:20,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:07:20,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:07:20,688 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) [2021-05-02 18:07:20,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:07:20,688 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-05-02 18:07:20,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:07:20,688 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:07:20,688 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:07:20,688 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:07:20,688 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:07:20,889 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 18:07:20,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:07:20 BasicIcfg [2021-05-02 18:07:20,892 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:07:20,893 INFO L168 Benchmark]: Toolchain (without parser) took 2554.62 ms. Allocated memory was 207.6 MB in the beginning and 249.6 MB in the end (delta: 41.9 MB). Free memory was 172.7 MB in the beginning and 157.7 MB in the end (delta: 15.0 MB). Peak memory consumption was 57.7 MB. Max. memory is 8.0 GB. [2021-05-02 18:07:20,893 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 207.6 MB. Free memory is still 189.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:07:20,894 INFO L168 Benchmark]: CACSL2BoogieTranslator took 224.12 ms. Allocated memory is still 207.6 MB. Free memory was 172.4 MB in the beginning and 190.9 MB in the end (delta: -18.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:07:20,894 INFO L168 Benchmark]: Boogie Preprocessor took 39.79 ms. Allocated memory is still 207.6 MB. Free memory was 190.9 MB in the beginning and 189.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:07:20,894 INFO L168 Benchmark]: RCFGBuilder took 369.42 ms. Allocated memory is still 207.6 MB. Free memory was 189.6 MB in the beginning and 174.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 18:07:20,894 INFO L168 Benchmark]: IcfgTransformer took 186.44 ms. Allocated memory is still 207.6 MB. Free memory was 174.9 MB in the beginning and 159.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 18:07:20,895 INFO L168 Benchmark]: TraceAbstraction took 1719.69 ms. Allocated memory was 207.6 MB in the beginning and 249.6 MB in the end (delta: 41.9 MB). Free memory was 159.1 MB in the beginning and 157.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:07:20,896 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 207.6 MB. Free memory is still 189.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 224.12 ms. Allocated memory is still 207.6 MB. Free memory was 172.4 MB in the beginning and 190.9 MB in the end (delta: -18.4 MB). Peak memory consumption was 11.6 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.79 ms. Allocated memory is still 207.6 MB. Free memory was 190.9 MB in the beginning and 189.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 369.42 ms. Allocated memory is still 207.6 MB. Free memory was 189.6 MB in the beginning and 174.9 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 186.44 ms. Allocated memory is still 207.6 MB. Free memory was 174.9 MB in the beginning and 159.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1719.69 ms. Allocated memory was 207.6 MB in the beginning and 249.6 MB in the end (delta: 41.9 MB). Free memory was 159.1 MB in the beginning and 157.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 45.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - 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, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1678.2ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 11.6ms, AutomataDifference: 638.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 40 SDtfs, 54 SDslu, 61 SDs, 0 SdLazy, 141 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 140.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 603.9ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 30.7ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 13.1ms SsaConstructionTime, 76.0ms SatisfiabilityAnalysisTime, 561.4ms InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 214 SizeOfPredicates, 6 NumberOfNonLiveVariables, 81 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 0/2 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! Received shutdown request...