/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-lit/cggmp2005b.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:11:15,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:11:15,339 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:11:15,373 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:11:15,373 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:11:15,374 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:11:15,375 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:11:15,383 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:11:15,386 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:11:15,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:11:15,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:11:15,392 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:11:15,392 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:11:15,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:11:15,393 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:11:15,394 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:11:15,395 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:11:15,395 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:11:15,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:11:15,397 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:11:15,398 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:11:15,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:11:15,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:11:15,406 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:11:15,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-05-02 18:11:15,416 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:11:15,417 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:11:15,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:11:15,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:11:15,449 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:11:15,450 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:11:15,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:11:15,452 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:11:15,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:11:15,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:11:15,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:11:15,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:11:15,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:11:15,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:11:15,454 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:11:15,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:11:15,454 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:11:15,454 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:11:15,454 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:11:15,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:11:15,454 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:11:15,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:11:15,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:11:15,455 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:11:15,455 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:11:15,456 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:11:15,456 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:11:15,696 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:11:15,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:11:15,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:11:15,719 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:11:15,719 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:11:15,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-05-02 18:11:15,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1b53dcd/a8b7ab5de8e44e6f8789c61b872f3bb0/FLAGd8532de0c [2021-05-02 18:11:16,099 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:11:16,099 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b.i [2021-05-02 18:11:16,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1b53dcd/a8b7ab5de8e44e6f8789c61b872f3bb0/FLAGd8532de0c [2021-05-02 18:11:16,515 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1b53dcd/a8b7ab5de8e44e6f8789c61b872f3bb0 [2021-05-02 18:11:16,517 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:11:16,519 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:11:16,520 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:11:16,520 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:11:16,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:11:16,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:11:16" (1/1) ... [2021-05-02 18:11:16,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3aef90e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:16, skipping insertion in model container [2021-05-02 18:11:16,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:11:16" (1/1) ... [2021-05-02 18:11:16,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:11:16,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:11:16,619 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-lit/cggmp2005b.i[895,908] [2021-05-02 18:11:16,625 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:11:16,630 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:11:16,638 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-lit/cggmp2005b.i[895,908] [2021-05-02 18:11:16,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:11:16,649 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:11:16,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:16 WrapperNode [2021-05-02 18:11:16,649 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:11:16,650 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:11:16,650 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:11:16,650 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:11:16,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:16" (1/1) ... [2021-05-02 18:11:16,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:16" (1/1) ... [2021-05-02 18:11:16,662 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:16" (1/1) ... [2021-05-02 18:11:16,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:16" (1/1) ... [2021-05-02 18:11:16,665 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:16" (1/1) ... [2021-05-02 18:11:16,667 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:16" (1/1) ... [2021-05-02 18:11:16,668 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:16" (1/1) ... [2021-05-02 18:11:16,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:11:16,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:11:16,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:11:16,670 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:11:16,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:16" (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 18:11:16,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:11:16,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:11:16,772 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:11:16,772 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-05-02 18:11:16,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:11:16,772 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:11:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:11:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:11:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-05-02 18:11:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-05-02 18:11:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:11:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:11:16,773 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-05-02 18:11:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:11:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-05-02 18:11:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:11:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:11:16,774 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:11:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:11:16,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:11:16,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:11:16,777 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:11:16,950 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:11:16,950 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-02 18:11:16,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:11:16 BoogieIcfgContainer [2021-05-02 18:11:16,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:11:16,962 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:11:16,962 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:11:16,963 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:11:16,966 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:11:16" (1/1) ... [2021-05-02 18:11:17,038 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< v_main_~j~0_2 20) InVars {main_~j~0=v_main_~j~0_2} OutVars{main_~j~0=v_main_~j~0_2} AuxVars[] AssignedVars[] [2021-05-02 18:11:17,072 WARN L240 tifierPushTermWalker]: treesize reduction 7, result has 87.5 percent of original size [2021-05-02 18:11:17,129 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-05-02 18:11:17,154 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-05-02 18:11:17,171 WARN L245 tifierPushTermWalker]: treesize reduction 7, result has 87.5 percent of original size 49 [2021-05-02 18:11:21,287 WARN L205 SmtUtils]: Spent 4.12 s on a formula simplification. DAG size of input: 27 DAG size of output: 26 [2021-05-02 18:11:21,289 INFO L1112 elerationTransformer]: Accelerated Formula: (and (< v_main_~j~0_2 20) (= v_main_~j~0_1 (+ v_main_~j~0_2 v_main_~i~0_1))) InVars {main_~j~0=v_main_~j~0_2, main_~i~0=v_main_~i~0_1} OutVars{main_~j~0=v_main_~j~0_1, main_~i~0=v_main_~i~0_1} AuxVars[] AssignedVars[main_~j~0] with Formula: (or (let ((.cse0 (+ v_main_~j~0_2 (* v_itFin_1 v_main_~i~0_1)))) (and (< v_main_~j~0_2 20) (forall ((v_it_1 Int)) (or (< v_itFin_1 (+ v_it_1 1)) (< (+ (* v_it_1 v_main_~i~0_1) v_main_~j~0_2) 20))) (= v_main_~j~0_1 .cse0) (<= 20 .cse0))) (and (= v_itFin_1 0) (<= 20 v_main_~j~0_2) (= v_main_~j~0_2 v_main_~j~0_1))) InVars {main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_2} OutVars{main_~i~0=v_main_~i~0_1, main_~j~0=v_main_~j~0_1} AuxVars[v_itFin_1] AssignedVars[main_~j~0] [2021-05-02 18:11:21,295 INFO L181 rdanLoopAcceleration]: Guard: Formula: (<= v_main_~k~0_4 3) InVars {main_~k~0=v_main_~k~0_4} OutVars{main_~k~0=v_main_~k~0_4} AuxVars[] AssignedVars[] [2021-05-02 18:11:21,299 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 91.5 percent of original size [2021-05-02 18:11:21,321 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 91.5 percent of original size 43 [2021-05-02 18:11:21,335 INFO L1112 elerationTransformer]: Accelerated Formula: (and (= v_main_~k~0_3 (+ v_main_~k~0_4 1)) (<= v_main_~k~0_4 3)) InVars {main_~k~0=v_main_~k~0_4} OutVars{main_~k~0=v_main_~k~0_3} AuxVars[] AssignedVars[main_~k~0] with Formula: (or (and (< 3 v_main_~k~0_4) (= v_itFin_2 0) (= v_main_~k~0_4 v_main_~k~0_3)) (let ((.cse0 (+ v_itFin_2 v_main_~k~0_4))) (and (<= v_main_~k~0_4 3) (= .cse0 v_main_~k~0_3) (<= .cse0 4) (< 3 .cse0)))) InVars {main_~k~0=v_main_~k~0_4} OutVars{main_~k~0=v_main_~k~0_3} AuxVars[v_itFin_2] AssignedVars[main_~k~0] [2021-05-02 18:11:21,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:11:21 BasicIcfg [2021-05-02 18:11:21,339 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:11:21,340 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:11:21,340 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:11:21,342 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:11:21,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:11:16" (1/4) ... [2021-05-02 18:11:21,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee361e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:11:21, skipping insertion in model container [2021-05-02 18:11:21,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:11:16" (2/4) ... [2021-05-02 18:11:21,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee361e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:11:21, skipping insertion in model container [2021-05-02 18:11:21,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:11:16" (3/4) ... [2021-05-02 18:11:21,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ee361e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:11:21, skipping insertion in model container [2021-05-02 18:11:21,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:11:21" (4/4) ... [2021-05-02 18:11:21,344 INFO L111 eAbstractionObserver]: Analyzing ICFG cggmp2005b.iJordan [2021-05-02 18:11:21,348 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:11:21,350 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:11:21,360 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:11:21,370 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:11:21,370 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:11:21,370 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:11:21,370 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:11:21,370 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:11:21,370 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:11:21,370 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:11:21,370 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:11:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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 18:11:21,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:11:21,382 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:21,382 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:21,382 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:21,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:21,385 INFO L82 PathProgramCache]: Analyzing trace with hash 2111755460, now seen corresponding path program 1 times [2021-05-02 18:11:21,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:21,390 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775444768] [2021-05-02 18:11:21,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:21,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:21,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:21,485 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 18:11:21,485 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:21,485 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775444768] [2021-05-02 18:11:21,486 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775444768] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:11:21,486 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:11:21,486 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:11:21,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392795661] [2021-05-02 18:11:21,489 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:11:21,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:21,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:11:21,497 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:11:21,498 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 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 18:11:21,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:21,525 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-05-02 18:11:21,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:11:21,526 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 18:11:21,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:21,539 INFO L225 Difference]: With dead ends: 22 [2021-05-02 18:11:21,539 INFO L226 Difference]: Without dead ends: 15 [2021-05-02 18:11:21,539 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:11:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-05-02 18:11:21,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-05-02 18:11:21,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:11:21,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2021-05-02 18:11:21,557 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 11 [2021-05-02 18:11:21,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:21,557 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2021-05-02 18:11:21,557 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 18:11:21,557 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2021-05-02 18:11:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:11:21,557 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:21,557 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:21,558 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:11:21,558 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:21,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:21,558 INFO L82 PathProgramCache]: Analyzing trace with hash 2112678981, now seen corresponding path program 1 times [2021-05-02 18:11:21,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:21,559 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553604877] [2021-05-02 18:11:21,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:21,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:21,602 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 18:11:21,602 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:21,602 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553604877] [2021-05-02 18:11:21,602 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553604877] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:11:21,603 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:11:21,603 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:11:21,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707662312] [2021-05-02 18:11:21,603 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:11:21,604 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:21,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:11:21,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:11:21,604 INFO L87 Difference]: Start difference. First operand 15 states and 17 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 18:11:21,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:21,641 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2021-05-02 18:11:21,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:11:21,641 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 18:11:21,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:21,642 INFO L225 Difference]: With dead ends: 16 [2021-05-02 18:11:21,642 INFO L226 Difference]: Without dead ends: 16 [2021-05-02 18:11:21,642 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:11:21,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-05-02 18:11:21,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-05-02 18:11:21,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 18:11:21,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2021-05-02 18:11:21,644 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 11 [2021-05-02 18:11:21,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:21,645 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2021-05-02 18:11:21,645 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 18:11:21,645 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2021-05-02 18:11:21,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-05-02 18:11:21,645 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:21,645 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:21,645 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:11:21,646 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:21,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:21,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1187274909, now seen corresponding path program 1 times [2021-05-02 18:11:21,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:21,646 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325426840] [2021-05-02 18:11:21,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:21,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:11:21,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:11:21,682 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:21,682 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1325426840] [2021-05-02 18:11:21,682 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1325426840] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:11:21,682 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:11:21,682 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:11:21,682 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211081795] [2021-05-02 18:11:21,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:11:21,683 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:21,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:11:21,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:11:21,683 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 18:11:21,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:21,718 INFO L93 Difference]: Finished difference Result 17 states and 19 transitions. [2021-05-02 18:11:21,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:11:21,718 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 15 [2021-05-02 18:11:21,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:21,719 INFO L225 Difference]: With dead ends: 17 [2021-05-02 18:11:21,719 INFO L226 Difference]: Without dead ends: 17 [2021-05-02 18:11:21,719 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.4ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:11:21,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-05-02 18:11:21,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-05-02 18:11:21,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 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 18:11:21,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2021-05-02 18:11:21,721 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 15 [2021-05-02 18:11:21,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:21,721 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2021-05-02 18:11:21,722 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 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 18:11:21,722 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2021-05-02 18:11:21,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-05-02 18:11:21,722 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:21,722 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:21,722 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 18:11:21,722 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:21,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:21,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1810315777, now seen corresponding path program 1 times [2021-05-02 18:11:21,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:21,723 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471820472] [2021-05-02 18:11:21,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:21,730 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 18:11:21,730 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2090440636] [2021-05-02 18:11:21,730 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 18:11:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:11:21,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 3 conjunts are in the unsatisfiable core [2021-05-02 18:11:21,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:21,836 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:21,841 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:21,864 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:11:21,864 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:21,864 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471820472] [2021-05-02 18:11:21,865 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 18:11:21,865 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090440636] [2021-05-02 18:11:21,865 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090440636] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:21,865 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 18:11:21,865 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-05-02 18:11:21,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462873568] [2021-05-02 18:11:21,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:11:21,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:21,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:11:21,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:11:21,867 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 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 18:11:21,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:21,878 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2021-05-02 18:11:21,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:11:21,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 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 16 [2021-05-02 18:11:21,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:21,879 INFO L225 Difference]: With dead ends: 21 [2021-05-02 18:11:21,879 INFO L226 Difference]: Without dead ends: 21 [2021-05-02 18:11:21,880 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:11:21,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-05-02 18:11:21,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2021-05-02 18:11:21,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 18:11:21,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-05-02 18:11:21,882 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 16 [2021-05-02 18:11:21,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:21,882 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-05-02 18:11:21,882 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (3), 2 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 18:11:21,882 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-05-02 18:11:21,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-05-02 18:11:21,882 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:21,883 INFO L523 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:22,098 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:22,098 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:22,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:22,099 INFO L82 PathProgramCache]: Analyzing trace with hash 1268305239, now seen corresponding path program 2 times [2021-05-02 18:11:22,099 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:22,099 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228161854] [2021-05-02 18:11:22,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:22,104 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 18:11:22,104 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [282484693] [2021-05-02 18:11:22,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:22,136 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-05-02 18:11:22,136 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:11:22,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2021-05-02 18:11:22,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:22,150 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:22,152 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:22,164 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:22,166 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:11:22,181 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-05-02 18:11:22,181 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:22,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228161854] [2021-05-02 18:11:22,182 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 18:11:22,182 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [282484693] [2021-05-02 18:11:22,182 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [282484693] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:11:22,182 INFO L226 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-05-02 18:11:22,182 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2021-05-02 18:11:22,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206782622] [2021-05-02 18:11:22,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 18:11:22,183 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:22,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 18:11:22,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:11:22,183 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 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 18:11:22,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:22,200 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-05-02 18:11:22,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:11:22,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 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 20 [2021-05-02 18:11:22,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:22,201 INFO L225 Difference]: With dead ends: 25 [2021-05-02 18:11:22,201 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 18:11:22,201 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.5ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:11:22,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 18:11:22,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-05-02 18:11:22,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 20 states have (on average 1.35) internal successors, (27), 20 states have internal predecessors, (27), 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 18:11:22,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 31 transitions. [2021-05-02 18:11:22,203 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 31 transitions. Word has length 20 [2021-05-02 18:11:22,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:22,204 INFO L480 AbstractCegarLoop]: Abstraction has 25 states and 31 transitions. [2021-05-02 18:11:22,204 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (3), 2 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 18:11:22,204 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 31 transitions. [2021-05-02 18:11:22,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-05-02 18:11:22,204 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:11:22,204 INFO L523 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:11:22,419 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:22,419 INFO L428 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:11:22,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:11:22,420 INFO L82 PathProgramCache]: Analyzing trace with hash -1433048913, now seen corresponding path program 3 times [2021-05-02 18:11:22,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:11:22,420 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570928752] [2021-05-02 18:11:22,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:11:22,425 ERROR L278 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-05-02 18:11:22,425 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [983060172] [2021-05-02 18:11:22,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:22,500 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-05-02 18:11:22,500 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-05-02 18:11:22,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 8 conjunts are in the unsatisfiable core [2021-05-02 18:11:22,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:11:22,539 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-05-02 18:11:22,539 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:11:22,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570928752] [2021-05-02 18:11:22,540 WARN L340 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-05-02 18:11:22,540 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [983060172] [2021-05-02 18:11:22,540 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleZ3 [983060172] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:11:22,540 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:11:22,540 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-05-02 18:11:22,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024819975] [2021-05-02 18:11:22,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-05-02 18:11:22,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:11:22,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-05-02 18:11:22,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:11:22,541 INFO L87 Difference]: Start difference. First operand 25 states and 31 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 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 18:11:22,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:11:22,556 INFO L93 Difference]: Finished difference Result 23 states and 29 transitions. [2021-05-02 18:11:22,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-05-02 18:11:22,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 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 24 [2021-05-02 18:11:22,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:11:22,557 INFO L225 Difference]: With dead ends: 23 [2021-05-02 18:11:22,557 INFO L226 Difference]: Without dead ends: 0 [2021-05-02 18:11:22,557 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.6ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-05-02 18:11:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-05-02 18:11:22,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-05-02 18:11:22,557 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 18:11:22,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-05-02 18:11:22,558 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2021-05-02 18:11:22,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:11:22,558 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-05-02 18:11:22,558 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 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 18:11:22,558 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-05-02 18:11:22,558 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-05-02 18:11:22,775 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:11:22,778 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:11:22 BasicIcfg [2021-05-02 18:11:22,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-05-02 18:11:22,779 INFO L168 Benchmark]: Toolchain (without parser) took 6260.38 ms. Allocated memory is still 212.9 MB. Free memory was 179.0 MB in the beginning and 178.2 MB in the end (delta: 719.0 kB). Peak memory consumption was 1.3 MB. Max. memory is 8.0 GB. [2021-05-02 18:11:22,779 INFO L168 Benchmark]: CDTParser took 0.09 ms. Allocated memory is still 212.9 MB. Free memory is still 195.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:11:22,779 INFO L168 Benchmark]: CACSL2BoogieTranslator took 130.08 ms. Allocated memory is still 212.9 MB. Free memory was 178.7 MB in the beginning and 169.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-05-02 18:11:22,779 INFO L168 Benchmark]: Boogie Preprocessor took 19.34 ms. Allocated memory is still 212.9 MB. Free memory was 169.2 MB in the beginning and 167.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-05-02 18:11:22,779 INFO L168 Benchmark]: RCFGBuilder took 291.37 ms. Allocated memory is still 212.9 MB. Free memory was 167.7 MB in the beginning and 183.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. [2021-05-02 18:11:22,779 INFO L168 Benchmark]: IcfgTransformer took 4376.80 ms. Allocated memory is still 212.9 MB. Free memory was 183.4 MB in the beginning and 161.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:11:22,779 INFO L168 Benchmark]: TraceAbstraction took 1438.27 ms. Allocated memory is still 212.9 MB. Free memory was 161.0 MB in the beginning and 178.2 MB in the end (delta: -17.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:11:22,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 1 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {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 212.9 MB. Free memory is still 195.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 130.08 ms. Allocated memory is still 212.9 MB. Free memory was 178.7 MB in the beginning and 169.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 19.34 ms. Allocated memory is still 212.9 MB. Free memory was 169.2 MB in the beginning and 167.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 291.37 ms. Allocated memory is still 212.9 MB. Free memory was 167.7 MB in the beginning and 183.4 MB in the end (delta: -15.7 MB). Peak memory consumption was 4.4 MB. Max. memory is 8.0 GB. * IcfgTransformer took 4376.80 ms. Allocated memory is still 212.9 MB. Free memory was 183.4 MB in the beginning and 161.4 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1438.27 ms. Allocated memory is still 212.9 MB. Free memory was 161.0 MB in the beginning and 178.2 MB in the end (delta: -17.3 MB). There was no memory consumed. 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: 1407.1ms, OverallIterations: 6, TraceHistogramMax: 3, EmptinessCheckTime: 8.3ms, AutomataDifference: 174.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 4.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 89 SDtfs, 47 SDslu, 113 SDs, 0 SdLazy, 78 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.8ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 98.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=5, InterpolantAutomatonStates: 25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 17.3ms AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 20.0ms SsaConstructionTime, 76.4ms SatisfiabilityAnalysisTime, 243.6ms InterpolantComputationTime, 97 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 215 SizeOfPredicates, 1 NumberOfNonLiveVariables, 255 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 21/29 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...