/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-acceleration/const_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 17:51:57,320 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 17:51:57,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 17:51:57,383 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 17:51:57,384 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 17:51:57,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 17:51:57,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 17:51:57,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 17:51:57,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 17:51:57,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 17:51:57,398 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 17:51:57,399 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 17:51:57,400 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 17:51:57,401 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 17:51:57,402 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 17:51:57,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 17:51:57,405 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 17:51:57,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 17:51:57,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 17:51:57,439 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 17:51:57,440 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 17:51:57,441 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 17:51:57,442 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 17:51:57,443 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 17:51:57,448 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 17:51:57,456 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 17:51:57,457 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 17:51:57,457 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 17:51:57,476 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 17:51:57,489 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 17:51:57,489 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 17:51:57,491 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 17:51:57,491 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 17:51:57,492 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 17:51:57,492 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 17:51:57,492 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 17:51:57,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 17:51:57,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 17:51:57,492 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 17:51:57,493 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 17:51:57,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 17:51:57,494 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 17:51:57,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 17:51:57,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 17:51:57,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 17:51:57,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 17:51:57,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 17:51:57,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 17:51:57,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 17:51:57,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 17:51:57,496 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 17:51:57,496 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 17:51:58,008 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 17:51:58,029 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 17:51:58,047 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 17:51:58,047 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 17:51:58,048 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 17:51:58,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/const_1-1.c [2021-05-02 17:51:58,126 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/153953487/f0898575feca437f8d496a9e47d4f0fe/FLAGb98702bb4 [2021-05-02 17:51:59,053 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 17:51:59,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/const_1-1.c [2021-05-02 17:51:59,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/153953487/f0898575feca437f8d496a9e47d4f0fe/FLAGb98702bb4 [2021-05-02 17:51:59,438 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/153953487/f0898575feca437f8d496a9e47d4f0fe [2021-05-02 17:51:59,440 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 17:51:59,441 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 17:51:59,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 17:51:59,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 17:51:59,448 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 17:51:59,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:51:59" (1/1) ... [2021-05-02 17:51:59,449 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b3e6ff0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:51:59, skipping insertion in model container [2021-05-02 17:51:59,449 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 05:51:59" (1/1) ... [2021-05-02 17:51:59,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 17:51:59,461 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 17:51:59,565 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-acceleration/const_1-1.c[321,334] [2021-05-02 17:51:59,572 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:51:59,577 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 17:51:59,585 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-acceleration/const_1-1.c[321,334] [2021-05-02 17:51:59,587 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 17:51:59,608 INFO L208 MainTranslator]: Completed translation [2021-05-02 17:51:59,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:51:59 WrapperNode [2021-05-02 17:51:59,609 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 17:51:59,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 17:51:59,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 17:51:59,610 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 17:51:59,617 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:51:59" (1/1) ... [2021-05-02 17:51:59,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:51:59" (1/1) ... [2021-05-02 17:51:59,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:51:59" (1/1) ... [2021-05-02 17:51:59,644 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:51:59" (1/1) ... [2021-05-02 17:51:59,646 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:51:59" (1/1) ... [2021-05-02 17:51:59,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:51:59" (1/1) ... [2021-05-02 17:51:59,665 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:51:59" (1/1) ... [2021-05-02 17:51:59,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 17:51:59,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 17:51:59,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 17:51:59,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 17:51:59,667 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:51:59" (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 17:51:59,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 17:51:59,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 17:51:59,798 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 17:51:59,798 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 17:51:59,799 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 17:51:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 17:51:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 17:51:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 17:51:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 17:51:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 17:51:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 17:51:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 17:51:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 17:51:59,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 17:51:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 17:51:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 17:51:59,800 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 17:51:59,969 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 17:51:59,970 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-05-02 17:51:59,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:51:59 BoogieIcfgContainer [2021-05-02 17:51:59,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 17:51:59,971 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 17:51:59,971 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 17:51:59,972 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 17:51:59,973 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:51:59" (1/1) ... [2021-05-02 17:52:00,054 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~y~0_2 4294967296) 1024) InVars {main_~y~0=v_main_~y~0_2} OutVars{main_~y~0=v_main_~y~0_2} AuxVars[] AssignedVars[] [2021-05-02 17:52:00,072 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.8 percent of original size [2021-05-02 17:52:00,166 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.8 percent of original size 60 [2021-05-02 17:52:00,197 INFO L1112 elerationTransformer]: Accelerated Formula: (and (< (mod v_main_~y~0_2 4294967296) 1024) (= v_main_~y~0_1 (+ v_main_~y~0_2 1)) (= v_main_~x~0_1 0)) InVars {main_~y~0=v_main_~y~0_2} OutVars{main_~x~0=v_main_~x~0_1, main_~y~0=v_main_~y~0_1, main_#t~post7=|v_main_#t~post7_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post7] with Formula: (let ((.cse0 (mod v_main_~y~0_2 4294967296))) (or (let ((.cse1 (+ v_itFin_1 v_main_~y~0_2))) (and (< .cse0 1024) (<= 1024 (mod .cse1 4294967296)) (< 0 v_itFin_1) (= v_main_~y~0_1 .cse1) (<= (div (+ (* v_itFin_1 (- 1)) (* v_main_~y~0_2 (- 1)) 1024) (- 4294967296)) (+ (div (+ v_main_~y~0_2 (- 4294967295)) 4294967296) 1)) (= v_main_~x~0_1 0))) (and (= v_main_~y~0_2 v_main_~y~0_1) (= |v_main_#t~post7_3| |v_main_#t~post7_1|) (= v_itFin_1 0) (= v_main_~x~0_5 v_main_~x~0_1) (<= 1024 .cse0)))) InVars {main_~y~0=v_main_~y~0_2, main_~x~0=v_main_~x~0_5, main_#t~post7=|v_main_#t~post7_3|} OutVars{main_~y~0=v_main_~y~0_1, main_~x~0=v_main_~x~0_1, main_#t~post7=|v_main_#t~post7_1|} AuxVars[v_itFin_1] AssignedVars[main_~x~0, main_~y~0, main_#t~post7] [2021-05-02 17:52:00,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:52:00 BasicIcfg [2021-05-02 17:52:00,203 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 17:52:00,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 17:52:00,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 17:52:00,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 17:52:00,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 05:51:59" (1/4) ... [2021-05-02 17:52:00,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db86b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:52:00, skipping insertion in model container [2021-05-02 17:52:00,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 05:51:59" (2/4) ... [2021-05-02 17:52:00,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db86b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 05:52:00, skipping insertion in model container [2021-05-02 17:52:00,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 05:51:59" (3/4) ... [2021-05-02 17:52:00,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db86b9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:52:00, skipping insertion in model container [2021-05-02 17:52:00,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 05:52:00" (4/4) ... [2021-05-02 17:52:00,207 INFO L111 eAbstractionObserver]: Analyzing ICFG const_1-1.cJordan [2021-05-02 17:52:00,210 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 17:52:00,212 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 17:52:00,221 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 17:52:00,231 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 17:52:00,231 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 17:52:00,231 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 17:52:00,231 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 17:52:00,232 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 17:52:00,232 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 17:52:00,232 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 17:52:00,232 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 17:52:00,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 17:52:00,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 17:52:00,243 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:00,243 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:00,243 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:00,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:00,246 INFO L82 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2021-05-02 17:52:00,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:00,251 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211977128] [2021-05-02 17:52:00,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:00,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:00,353 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 17:52:00,353 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:00,354 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211977128] [2021-05-02 17:52:00,354 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211977128] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:52:00,354 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:52:00,354 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 17:52:00,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352157813] [2021-05-02 17:52:00,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 17:52:00,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:00,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 17:52:00,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 17:52:00,366 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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 17:52:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:00,391 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2021-05-02 17:52:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 17:52:00,393 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 17:52:00,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:00,397 INFO L225 Difference]: With dead ends: 18 [2021-05-02 17:52:00,397 INFO L226 Difference]: Without dead ends: 12 [2021-05-02 17:52:00,398 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.0ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 17:52:00,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-05-02 17:52:00,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-05-02 17:52:00,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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 17:52:00,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-05-02 17:52:00,414 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2021-05-02 17:52:00,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:00,415 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-05-02 17:52:00,415 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 17:52:00,415 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-05-02 17:52:00,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 17:52:00,415 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:00,415 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:00,415 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 17:52:00,416 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:00,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:00,416 INFO L82 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2021-05-02 17:52:00,416 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:00,416 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395253348] [2021-05-02 17:52:00,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:00,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:00,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:00,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:00,490 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 17:52:00,491 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:00,491 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395253348] [2021-05-02 17:52:00,491 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395253348] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 17:52:00,491 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 17:52:00,491 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 17:52:00,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620887436] [2021-05-02 17:52:00,492 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 17:52:00,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:00,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 17:52:00,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 17:52:00,493 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 17:52:00,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:00,528 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-05-02 17:52:00,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 17:52:00,529 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 17:52:00,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:00,529 INFO L225 Difference]: With dead ends: 13 [2021-05-02 17:52:00,529 INFO L226 Difference]: Without dead ends: 13 [2021-05-02 17:52:00,530 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 38.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 17:52:00,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-05-02 17:52:00,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-05-02 17:52:00,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 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 17:52:00,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-05-02 17:52:00,532 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2021-05-02 17:52:00,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:00,532 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-05-02 17:52:00,532 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 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 17:52:00,532 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-05-02 17:52:00,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 17:52:00,532 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 17:52:00,533 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 17:52:00,533 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 17:52:00,533 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 17:52:00,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 17:52:00,533 INFO L82 PathProgramCache]: Analyzing trace with hash -814146699, now seen corresponding path program 1 times [2021-05-02 17:52:00,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 17:52:00,533 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685405571] [2021-05-02 17:52:00,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 17:52:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:00,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 17:52:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:00,608 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 17:52:00,608 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 17:52:00,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685405571] [2021-05-02 17:52:00,608 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685405571] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:00,608 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339343777] [2021-05-02 17:52:00,608 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 17:52:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 17:52:00,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 9 conjunts are in the unsatisfiable core [2021-05-02 17:52:00,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 17:52:00,692 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 17:52:00,719 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 17:52:00,720 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1339343777] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 17:52:00,720 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-05-02 17:52:00,720 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 9 [2021-05-02 17:52:00,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610198752] [2021-05-02 17:52:00,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-05-02 17:52:00,720 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 17:52:00,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-05-02 17:52:00,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-05-02 17:52:00,721 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 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 17:52:00,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 17:52:00,904 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-05-02 17:52:00,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-05-02 17:52:00,905 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 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 12 [2021-05-02 17:52:00,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 17:52:00,905 INFO L225 Difference]: With dead ends: 11 [2021-05-02 17:52:00,905 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 17:52:00,905 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 187.2ms TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-05-02 17:52:00,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 17:52:00,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 17:52:00,906 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 17:52:00,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 17:52:00,906 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-05-02 17:52:00,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 17:52:00,906 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 17:52:00,906 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 9 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 6 states have internal predecessors, (11), 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 17:52:00,906 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 17:52:00,906 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 17:52:01,122 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-05-02 17:52:01,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 05:52:01 BasicIcfg [2021-05-02 17:52:01,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 17:52:01,125 INFO L168 Benchmark]: Toolchain (without parser) took 1684.17 ms. Allocated memory is still 180.4 MB. Free memory was 144.8 MB in the beginning and 91.7 MB in the end (delta: 53.1 MB). Peak memory consumption was 52.5 MB. Max. memory is 8.0 GB. [2021-05-02 17:52:01,126 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 180.4 MB. Free memory is still 161.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 17:52:01,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 163.89 ms. Allocated memory is still 180.4 MB. Free memory was 144.5 MB in the beginning and 164.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. [2021-05-02 17:52:01,126 INFO L168 Benchmark]: Boogie Preprocessor took 56.26 ms. Allocated memory is still 180.4 MB. Free memory was 164.2 MB in the beginning and 162.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 17:52:01,127 INFO L168 Benchmark]: RCFGBuilder took 304.05 ms. Allocated memory is still 180.4 MB. Free memory was 162.8 MB in the beginning and 150.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2021-05-02 17:52:01,127 INFO L168 Benchmark]: IcfgTransformer took 231.50 ms. Allocated memory is still 180.4 MB. Free memory was 150.3 MB in the beginning and 134.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-05-02 17:52:01,127 INFO L168 Benchmark]: TraceAbstraction took 921.30 ms. Allocated memory is still 180.4 MB. Free memory was 134.2 MB in the beginning and 91.7 MB in the end (delta: 42.5 MB). Peak memory consumption was 42.9 MB. Max. memory is 8.0 GB. [2021-05-02 17:52:01,129 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={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 0.09 ms. Allocated memory is still 180.4 MB. Free memory is still 161.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 163.89 ms. Allocated memory is still 180.4 MB. Free memory was 144.5 MB in the beginning and 164.2 MB in the end (delta: -19.7 MB). Peak memory consumption was 12.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 56.26 ms. Allocated memory is still 180.4 MB. Free memory was 164.2 MB in the beginning and 162.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 304.05 ms. Allocated memory is still 180.4 MB. Free memory was 162.8 MB in the beginning and 150.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * IcfgTransformer took 231.50 ms. Allocated memory is still 180.4 MB. Free memory was 150.3 MB in the beginning and 134.9 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 921.30 ms. Allocated memory is still 180.4 MB. Free memory was 134.2 MB in the beginning and 91.7 MB in the end (delta: 42.5 MB). Peak memory consumption was 42.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: 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, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 892.8ms, OverallIterations: 3, TraceHistogramMax: 1, EmptinessCheckTime: 6.7ms, AutomataDifference: 262.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 32 SDtfs, 19 SDslu, 35 SDs, 0 SdLazy, 42 SolverSat, 10 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 44.9ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 246.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 10.8ms AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 12.0ms SsaConstructionTime, 72.0ms SatisfiabilityAnalysisTime, 222.3ms InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 156 SizeOfPredicates, 2 NumberOfNonLiveVariables, 88 ConjunctsInSsa, 9 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...