/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/nested3-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-c225d54 [2021-05-02 18:52:19,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-05-02 18:52:19,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-05-02 18:52:19,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-05-02 18:52:19,834 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-05-02 18:52:19,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-05-02 18:52:19,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-05-02 18:52:19,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-05-02 18:52:19,839 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-05-02 18:52:19,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-05-02 18:52:19,841 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-05-02 18:52:19,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-05-02 18:52:19,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-05-02 18:52:19,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-05-02 18:52:19,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-05-02 18:52:19,845 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-05-02 18:52:19,845 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-05-02 18:52:19,846 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-05-02 18:52:19,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-05-02 18:52:19,849 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-05-02 18:52:19,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-05-02 18:52:19,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-05-02 18:52:19,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-05-02 18:52:19,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-05-02 18:52:19,855 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-05-02 18:52:19,855 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-05-02 18:52:19,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-05-02 18:52:19,856 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-05-02 18:52:19,856 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-05-02 18:52:19,857 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-05-02 18:52:19,857 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-05-02 18:52:19,858 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-05-02 18:52:19,858 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-05-02 18:52:19,859 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-05-02 18:52:19,860 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-05-02 18:52:19,860 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-05-02 18:52:19,861 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-05-02 18:52:19,861 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-05-02 18:52:19,861 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-05-02 18:52:19,862 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-05-02 18:52:19,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-05-02 18:52:19,863 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2021-05-02 18:52:19,872 INFO L113 SettingsManager]: Loading preferences was successful [2021-05-02 18:52:19,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-05-02 18:52:19,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-05-02 18:52:19,873 INFO L138 SettingsManager]: * sizeof long=4 [2021-05-02 18:52:19,873 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-05-02 18:52:19,874 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-05-02 18:52:19,874 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-05-02 18:52:19,874 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-05-02 18:52:19,874 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-05-02 18:52:19,874 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-05-02 18:52:19,874 INFO L138 SettingsManager]: * sizeof long double=12 [2021-05-02 18:52:19,875 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-05-02 18:52:19,875 INFO L138 SettingsManager]: * Use constant arrays=true [2021-05-02 18:52:19,875 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-05-02 18:52:19,875 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-05-02 18:52:19,875 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-05-02 18:52:19,875 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-05-02 18:52:19,875 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-05-02 18:52:19,876 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-05-02 18:52:19,876 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-05-02 18:52:19,876 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-05-02 18:52:19,877 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-05-02 18:52:19,877 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2021-05-02 18:52:20,193 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-05-02 18:52:20,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-05-02 18:52:20,224 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-05-02 18:52:20,225 INFO L271 PluginConnector]: Initializing CDTParser... [2021-05-02 18:52:20,226 INFO L275 PluginConnector]: CDTParser initialized [2021-05-02 18:52:20,227 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested3-1.c [2021-05-02 18:52:20,293 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/640209340/a2933b1d8fa3421eb1dfd44ed8179178/FLAG3c51535ab [2021-05-02 18:52:20,743 INFO L306 CDTParser]: Found 1 translation units. [2021-05-02 18:52:20,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-1.c [2021-05-02 18:52:20,749 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/640209340/a2933b1d8fa3421eb1dfd44ed8179178/FLAG3c51535ab [2021-05-02 18:52:20,769 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/640209340/a2933b1d8fa3421eb1dfd44ed8179178 [2021-05-02 18:52:20,772 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-05-02 18:52:20,773 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-05-02 18:52:20,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-05-02 18:52:20,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-05-02 18:52:20,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-05-02 18:52:20,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:52:20" (1/1) ... [2021-05-02 18:52:20,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2215ed3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:52:20, skipping insertion in model container [2021-05-02 18:52:20,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.05 06:52:20" (1/1) ... [2021-05-02 18:52:20,790 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-05-02 18:52:20,803 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-05-02 18:52:20,919 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-1.c[321,334] [2021-05-02 18:52:20,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:52:20,962 INFO L203 MainTranslator]: Completed pre-run [2021-05-02 18:52:20,988 WARN L224 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/nested3-1.c[321,334] [2021-05-02 18:52:20,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-05-02 18:52:21,027 INFO L208 MainTranslator]: Completed translation [2021-05-02 18:52:21,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:52:21 WrapperNode [2021-05-02 18:52:21,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-05-02 18:52:21,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-05-02 18:52:21,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-05-02 18:52:21,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-05-02 18:52:21,039 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:52:21" (1/1) ... [2021-05-02 18:52:21,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:52:21" (1/1) ... [2021-05-02 18:52:21,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:52:21" (1/1) ... [2021-05-02 18:52:21,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:52:21" (1/1) ... [2021-05-02 18:52:21,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:52:21" (1/1) ... [2021-05-02 18:52:21,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:52:21" (1/1) ... [2021-05-02 18:52:21,071 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:52:21" (1/1) ... [2021-05-02 18:52:21,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-05-02 18:52:21,079 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-05-02 18:52:21,079 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-05-02 18:52:21,080 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-05-02 18:52:21,080 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:52:21" (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 18:52:21,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-05-02 18:52:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-05-02 18:52:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-05-02 18:52:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-05-02 18:52:21,148 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-05-02 18:52:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-05-02 18:52:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-05-02 18:52:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-05-02 18:52:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-05-02 18:52:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-05-02 18:52:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-05-02 18:52:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-05-02 18:52:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-05-02 18:52:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-05-02 18:52:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-05-02 18:52:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-05-02 18:52:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-05-02 18:52:21,451 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-05-02 18:52:21,451 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2021-05-02 18:52:21,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:52:21 BoogieIcfgContainer [2021-05-02 18:52:21,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-05-02 18:52:21,453 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2021-05-02 18:52:21,453 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2021-05-02 18:52:21,454 INFO L275 PluginConnector]: IcfgTransformer initialized [2021-05-02 18:52:21,456 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:52:21" (1/1) ... [2021-05-02 18:52:21,548 INFO L181 rdanLoopAcceleration]: Guard: Formula: (< (mod v_main_~z~0_3 4294967296) 268435455) InVars {main_~z~0=v_main_~z~0_3} OutVars{main_~z~0=v_main_~z~0_3} AuxVars[] AssignedVars[] [2021-05-02 18:52:21,583 WARN L240 tifierPushTermWalker]: treesize reduction 4, result has 93.1 percent of original size [2021-05-02 18:52:21,760 WARN L245 tifierPushTermWalker]: treesize reduction 4, result has 93.1 percent of original size 54 [2021-05-02 18:52:21,815 INFO L1112 elerationTransformer]: Accelerated Formula: (and (< (mod v_main_~z~0_3 4294967296) 268435455) (= (+ v_main_~z~0_3 1) v_main_~z~0_2)) InVars {main_~z~0=v_main_~z~0_3} OutVars{main_~z~0=v_main_~z~0_2, main_#t~post7=|v_main_#t~post7_1|} AuxVars[] AssignedVars[main_~z~0, main_#t~post7] with Formula: (let ((.cse1 (mod v_main_~z~0_3 4294967296))) (or (let ((.cse0 (+ v_itFin_1 v_main_~z~0_3))) (and (<= 268435455 (mod .cse0 4294967296)) (< 0 v_itFin_1) (< .cse1 268435455) (= v_main_~z~0_2 .cse0) (<= (div (+ (* v_itFin_1 (- 1)) (* v_main_~z~0_3 (- 1)) 268435455) (- 4294967296)) (+ (div (+ v_main_~z~0_3 (- 4294967295)) 4294967296) 1)))) (and (= |v_main_#t~post7_3| |v_main_#t~post7_1|) (= v_itFin_1 0) (= v_main_~z~0_3 v_main_~z~0_2) (<= 268435455 .cse1)))) InVars {main_~z~0=v_main_~z~0_3, main_#t~post7=|v_main_#t~post7_3|} OutVars{main_~z~0=v_main_~z~0_2, main_#t~post7=|v_main_#t~post7_1|} AuxVars[v_itFin_1] AssignedVars[main_~z~0, main_#t~post7] [2021-05-02 18:52:21,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:52:21 BasicIcfg [2021-05-02 18:52:21,828 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2021-05-02 18:52:21,831 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-05-02 18:52:21,831 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-05-02 18:52:21,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-05-02 18:52:21,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.05 06:52:20" (1/4) ... [2021-05-02 18:52:21,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202e0b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:52:21, skipping insertion in model container [2021-05-02 18:52:21,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.05 06:52:21" (2/4) ... [2021-05-02 18:52:21,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202e0b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.05 06:52:21, skipping insertion in model container [2021-05-02 18:52:21,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.05 06:52:21" (3/4) ... [2021-05-02 18:52:21,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@202e0b2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.05 06:52:21, skipping insertion in model container [2021-05-02 18:52:21,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 02.05 06:52:21" (4/4) ... [2021-05-02 18:52:21,839 INFO L111 eAbstractionObserver]: Analyzing ICFG nested3-1.cJordan [2021-05-02 18:52:21,844 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2021-05-02 18:52:21,848 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-05-02 18:52:21,862 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-05-02 18:52:21,885 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-05-02 18:52:21,885 INFO L377 AbstractCegarLoop]: Hoare is false [2021-05-02 18:52:21,885 INFO L378 AbstractCegarLoop]: Compute interpolants for ForwardPredicates [2021-05-02 18:52:21,885 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-05-02 18:52:21,885 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-05-02 18:52:21,885 INFO L381 AbstractCegarLoop]: Difference is false [2021-05-02 18:52:21,886 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-05-02 18:52:21,886 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-05-02 18:52:21,899 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-05-02 18:52:21,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:52:21,910 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:21,911 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:21,912 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:21,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:21,917 INFO L82 PathProgramCache]: Analyzing trace with hash 1301415802, now seen corresponding path program 1 times [2021-05-02 18:52:21,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:21,925 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415272575] [2021-05-02 18:52:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:22,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,087 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 18:52:22,088 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:22,088 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415272575] [2021-05-02 18:52:22,088 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415272575] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:52:22,089 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:52:22,089 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-05-02 18:52:22,089 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73604477] [2021-05-02 18:52:22,093 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-05-02 18:52:22,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:22,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-05-02 18:52:22,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:52:22,106 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 16 states have internal predecessors, (23), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) 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 18:52:22,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:22,181 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2021-05-02 18:52:22,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-05-02 18:52:22,183 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 18:52:22,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:22,189 INFO L225 Difference]: With dead ends: 25 [2021-05-02 18:52:22,189 INFO L226 Difference]: Without dead ends: 20 [2021-05-02 18:52:22,190 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-05-02 18:52:22,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-05-02 18:52:22,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2021-05-02 18:52:22,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:52:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2021-05-02 18:52:22,225 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 11 [2021-05-02 18:52:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:22,225 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2021-05-02 18:52:22,225 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 18:52:22,226 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2021-05-02 18:52:22,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-05-02 18:52:22,226 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:22,226 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:22,227 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-05-02 18:52:22,227 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:22,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:22,227 INFO L82 PathProgramCache]: Analyzing trace with hash 1302339323, now seen corresponding path program 1 times [2021-05-02 18:52:22,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:22,228 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234571556] [2021-05-02 18:52:22,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:22,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,330 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 18:52:22,330 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:22,330 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234571556] [2021-05-02 18:52:22,331 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234571556] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:52:22,331 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:52:22,332 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:52:22,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639353365] [2021-05-02 18:52:22,333 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:52:22,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:22,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:52:22,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:52:22,339 INFO L87 Difference]: Start difference. First operand 20 states and 24 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 18:52:22,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:22,448 INFO L93 Difference]: Finished difference Result 27 states and 35 transitions. [2021-05-02 18:52:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:52:22,449 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 18:52:22,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:22,450 INFO L225 Difference]: With dead ends: 27 [2021-05-02 18:52:22,450 INFO L226 Difference]: Without dead ends: 27 [2021-05-02 18:52:22,451 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 59.7ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:52:22,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-05-02 18:52:22,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 21. [2021-05-02 18:52:22,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 14 states have internal predecessors, (17), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:52:22,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2021-05-02 18:52:22,457 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2021-05-02 18:52:22,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:22,457 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2021-05-02 18:52:22,457 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 18:52:22,457 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2021-05-02 18:52:22,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-05-02 18:52:22,458 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:22,458 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:22,458 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-05-02 18:52:22,458 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:22,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:22,458 INFO L82 PathProgramCache]: Analyzing trace with hash 1748313539, now seen corresponding path program 1 times [2021-05-02 18:52:22,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:22,459 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321238959] [2021-05-02 18:52:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:22,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,537 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 18:52:22,538 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:22,538 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321238959] [2021-05-02 18:52:22,538 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321238959] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:52:22,538 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:52:22,538 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:52:22,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924540073] [2021-05-02 18:52:22,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:52:22,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:22,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:52:22,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:52:22,540 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:22,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:22,629 INFO L93 Difference]: Finished difference Result 25 states and 31 transitions. [2021-05-02 18:52:22,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:52:22,630 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-05-02 18:52:22,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:22,632 INFO L225 Difference]: With dead ends: 25 [2021-05-02 18:52:22,632 INFO L226 Difference]: Without dead ends: 25 [2021-05-02 18:52:22,633 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 43.8ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:52:22,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-05-02 18:52:22,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2021-05-02 18:52:22,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 15 states have internal predecessors, (18), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:52:22,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2021-05-02 18:52:22,641 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2021-05-02 18:52:22,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:22,641 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2021-05-02 18:52:22,642 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:22,642 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2021-05-02 18:52:22,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-05-02 18:52:22,642 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:22,642 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:22,642 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-05-02 18:52:22,642 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:22,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:22,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1606116621, now seen corresponding path program 1 times [2021-05-02 18:52:22,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:22,643 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732640463] [2021-05-02 18:52:22,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:22,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:22,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,770 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 18:52:22,770 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:22,770 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732640463] [2021-05-02 18:52:22,770 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732640463] provided 1 perfect and 0 imperfect interpolant sequences [2021-05-02 18:52:22,771 INFO L226 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-05-02 18:52:22,771 INFO L239 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-05-02 18:52:22,771 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808760438] [2021-05-02 18:52:22,771 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-05-02 18:52:22,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-05-02 18:52:22,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-05-02 18:52:22,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-05-02 18:52:22,772 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:22,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-05-02 18:52:22,855 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2021-05-02 18:52:22,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-05-02 18:52:22,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-05-02 18:52:22,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-05-02 18:52:22,856 INFO L225 Difference]: With dead ends: 24 [2021-05-02 18:52:22,856 INFO L226 Difference]: Without dead ends: 24 [2021-05-02 18:52:22,857 INFO L779 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 57.9ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-05-02 18:52:22,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2021-05-02 18:52:22,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2021-05-02 18:52:22,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 5 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-05-02 18:52:22,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2021-05-02 18:52:22,860 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 13 [2021-05-02 18:52:22,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-05-02 18:52:22,860 INFO L480 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2021-05-02 18:52:22,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 3 states have internal predecessors, (9), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-05-02 18:52:22,860 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2021-05-02 18:52:22,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-05-02 18:52:22,861 INFO L515 BasicCegarLoop]: Found error trace [2021-05-02 18:52:22,861 INFO L523 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-05-02 18:52:22,861 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-05-02 18:52:22,861 INFO L428 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-05-02 18:52:22,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-05-02 18:52:22,862 INFO L82 PathProgramCache]: Analyzing trace with hash 1773342651, now seen corresponding path program 1 times [2021-05-02 18:52:22,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-05-02 18:52:22,862 INFO L361 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66833418] [2021-05-02 18:52:22,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-05-02 18:52:22,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-05-02 18:52:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:22,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-05-02 18:52:22,959 INFO L179 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-05-02 18:52:22,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66833418] [2021-05-02 18:52:22,959 INFO L200 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66833418] provided 0 perfect and 1 imperfect interpolant sequences [2021-05-02 18:52:22,959 INFO L361 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969151012] [2021-05-02 18:52:22,959 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 18:52:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-05-02 18:52:23,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 6 conjunts are in the unsatisfiable core [2021-05-02 18:52:23,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-05-02 18:52:23,189 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,214 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,260 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,263 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,266 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,269 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,437 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,441 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,444 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,447 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,451 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,454 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:52:23,457 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-05-02 18:53:01,069 WARN L348 FreeRefinementEngine]: Global settings require throwing the following exception [2021-05-02 18:53:01,270 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-05-02 18:53:01,270 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.OutOfMemoryError: Java heap space at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:651) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildCorrespondingFiniteJunctionForAntiDer(DualJunctionTir.java:615) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildBoundConstraint(DualJunctionTir.java:451) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateConjuncts(DualJunctionTir.java:205) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminateOne(DualJunctionTir.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryExhaustivelyToEliminate(DualJunctionTir.java:125) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir.tryToEliminate(DualJunctionTir.java:112) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToEliminateOne(QuantifierPusher.java:869) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyNewEliminationTechniquesExhaustively(QuantifierPusher.java:835) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.applyDualJunctionEliminationTechniques(QuantifierPusher.java:753) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:384) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:166) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:160) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher$$Lambda$473/0x0000000840511840.eliminate(Unknown Source) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.doit(QuantifierPusher.java:609) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective2(QuantifierPusher.java:405) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:316) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.convert(QuantifierPusher.java:227) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.cacheConvert(TermTransformer.java:131) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer$Convert.walk(TermTransformer.java:79) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:115) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:106) at de.uni_freiburg.informatik.ultimate.logic.TermTransformer.transform(TermTransformer.java:272) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.eliminate(QuantifierPusher.java:144) [2021-05-02 18:53:01,273 INFO L168 Benchmark]: Toolchain (without parser) took 40499.41 ms. Allocated memory was 127.9 MB in the beginning and 8.0 GB in the end (delta: 7.9 GB). Free memory was 92.4 MB in the beginning and 7.9 GB in the end (delta: -7.8 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. [2021-05-02 18:53:01,273 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 127.9 MB. Free memory is still 109.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-05-02 18:53:01,273 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.30 ms. Allocated memory was 127.9 MB in the beginning and 176.2 MB in the end (delta: 48.2 MB). Free memory was 92.1 MB in the beginning and 159.7 MB in the end (delta: -67.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. [2021-05-02 18:53:01,274 INFO L168 Benchmark]: Boogie Preprocessor took 48.32 ms. Allocated memory is still 176.2 MB. Free memory was 159.7 MB in the beginning and 158.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-05-02 18:53:01,274 INFO L168 Benchmark]: RCFGBuilder took 373.78 ms. Allocated memory is still 176.2 MB. Free memory was 158.0 MB in the beginning and 143.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-05-02 18:53:01,274 INFO L168 Benchmark]: IcfgTransformer took 374.71 ms. Allocated memory is still 176.2 MB. Free memory was 143.3 MB in the beginning and 130.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-05-02 18:53:01,275 INFO L168 Benchmark]: TraceAbstraction took 39440.86 ms. Allocated memory was 176.2 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 129.7 MB in the beginning and 7.9 GB in the end (delta: -7.7 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. [2021-05-02 18:53:01,276 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 1 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 0.12 ms. Allocated memory is still 127.9 MB. Free memory is still 109.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 253.30 ms. Allocated memory was 127.9 MB in the beginning and 176.2 MB in the end (delta: 48.2 MB). Free memory was 92.1 MB in the beginning and 159.7 MB in the end (delta: -67.6 MB). Peak memory consumption was 12.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 48.32 ms. Allocated memory is still 176.2 MB. Free memory was 159.7 MB in the beginning and 158.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 373.78 ms. Allocated memory is still 176.2 MB. Free memory was 158.0 MB in the beginning and 143.3 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * IcfgTransformer took 374.71 ms. Allocated memory is still 176.2 MB. Free memory was 143.3 MB in the beginning and 130.0 MB in the end (delta: 13.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 39440.86 ms. Allocated memory was 176.2 MB in the beginning and 8.0 GB in the end (delta: 7.8 GB). Free memory was 129.7 MB in the beginning and 7.9 GB in the end (delta: -7.7 GB). Peak memory consumption was 2.7 GB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: OutOfMemoryError: Java heap space de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: OutOfMemoryError: Java heap space: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.DualJunctionTir$ExplicitLhsPolynomialRelations.buildDualFiniteJunction(DualJunctionTir.java:651) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...