/usr/bin/java -ea -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/count_up_down-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-e106359-m [2022-04-14 18:55:58,801 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-14 18:55:58,803 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-14 18:55:58,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-14 18:55:58,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-14 18:55:58,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-14 18:55:58,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-14 18:55:58,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-14 18:55:58,832 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-14 18:55:58,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-14 18:55:58,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-14 18:55:58,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-14 18:55:58,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-14 18:55:58,836 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-14 18:55:58,837 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-14 18:55:58,838 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-14 18:55:58,838 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-14 18:55:58,839 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-14 18:55:58,840 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-14 18:55:58,842 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-14 18:55:58,843 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-14 18:55:58,844 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-14 18:55:58,845 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-14 18:55:58,845 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-14 18:55:58,846 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-14 18:55:58,848 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-14 18:55:58,855 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-14 18:55:58,856 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-14 18:55:58,859 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-14 18:55:58,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-14 18:55:58,867 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-14 18:55:58,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-14 18:55:58,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-14 18:55:58,868 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-14 18:55:58,869 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-14 18:55:58,869 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-14 18:55:58,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-14 18:55:58,869 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-14 18:55:58,869 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-14 18:55:58,869 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-14 18:55:58,870 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-14 18:55:58,870 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-14 18:55:58,870 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-14 18:55:58,870 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-14 18:55:58,870 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-14 18:55:58,871 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-14 18:55:58,871 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-14 18:55:58,871 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-14 18:55:58,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 18:55:58,871 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-14 18:55:58,871 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-14 18:55:58,872 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-14 18:55:58,872 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-14 18:55:59,101 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-14 18:55:59,117 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-14 18:55:59,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-14 18:55:59,120 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-14 18:55:59,121 INFO L275 PluginConnector]: CDTParser initialized [2022-04-14 18:55:59,122 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/count_up_down-2.c [2022-04-14 18:55:59,190 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3c3f39d/6559e5e7f63f441dbff3e0e2e387d67f/FLAG75badf6eb [2022-04-14 18:55:59,549 INFO L306 CDTParser]: Found 1 translation units. [2022-04-14 18:55:59,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down-2.c [2022-04-14 18:55:59,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3c3f39d/6559e5e7f63f441dbff3e0e2e387d67f/FLAG75badf6eb [2022-04-14 18:55:59,570 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc3c3f39d/6559e5e7f63f441dbff3e0e2e387d67f [2022-04-14 18:55:59,573 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-14 18:55:59,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-14 18:55:59,578 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-14 18:55:59,578 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-14 18:55:59,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-14 18:55:59,585 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 06:55:59" (1/1) ... [2022-04-14 18:55:59,586 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2adf591c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 06:55:59, skipping insertion in model container [2022-04-14 18:55:59,586 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.04 06:55:59" (1/1) ... [2022-04-14 18:55:59,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-14 18:55:59,603 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-14 18:55:59,738 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down-2.c[327,340] [2022-04-14 18:55:59,762 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 18:55:59,769 INFO L203 MainTranslator]: Completed pre-run [2022-04-14 18:55:59,779 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down-2.c[327,340] [2022-04-14 18:55:59,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-14 18:55:59,792 INFO L208 MainTranslator]: Completed translation [2022-04-14 18:55:59,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 06:55:59 WrapperNode [2022-04-14 18:55:59,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-14 18:55:59,794 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-14 18:55:59,794 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-14 18:55:59,794 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-14 18:55:59,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 06:55:59" (1/1) ... [2022-04-14 18:55:59,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 06:55:59" (1/1) ... [2022-04-14 18:55:59,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 06:55:59" (1/1) ... [2022-04-14 18:55:59,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 06:55:59" (1/1) ... [2022-04-14 18:55:59,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 06:55:59" (1/1) ... [2022-04-14 18:55:59,817 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 06:55:59" (1/1) ... [2022-04-14 18:55:59,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 06:55:59" (1/1) ... [2022-04-14 18:55:59,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-14 18:55:59,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-14 18:55:59,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-14 18:55:59,825 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-14 18:55:59,827 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 06:55:59" (1/1) ... [2022-04-14 18:55:59,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-14 18:55:59,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-14 18:55:59,857 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-14 18:55:59,862 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-14 18:55:59,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-14 18:55:59,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-14 18:55:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-14 18:55:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-14 18:55:59,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-14 18:55:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-14 18:55:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-14 18:55:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-14 18:55:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-14 18:55:59,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-14 18:55:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-14 18:55:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-14 18:55:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-14 18:55:59,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-14 18:55:59,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-14 18:55:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-14 18:55:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-14 18:55:59,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-14 18:55:59,942 INFO L234 CfgBuilder]: Building ICFG [2022-04-14 18:55:59,943 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-14 18:56:00,021 INFO L275 CfgBuilder]: Performing block encoding [2022-04-14 18:56:00,027 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-14 18:56:00,027 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-14 18:56:00,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 06:56:00 BoogieIcfgContainer [2022-04-14 18:56:00,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-14 18:56:00,029 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-14 18:56:00,030 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-14 18:56:00,030 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-14 18:56:00,033 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 06:56:00" (1/1) ... [2022-04-14 18:56:00,035 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-14 18:56:00,628 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-04-14 18:56:00,629 INFO L91 elerationTransformer]: Accelerated Formula: (and (= (+ v_main_~x~0_3 1) v_main_~x~0_4) (< 0 (mod v_main_~x~0_4 4294967296)) (= v_main_~y~0_2 (+ v_main_~y~0_3 1))) InVars {main_~x~0=v_main_~x~0_4, main_~y~0=v_main_~y~0_3} OutVars{main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_2, main_#t~post5=|v_main_#t~post5_1|, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post5, main_#t~post6] to Formula: (let ((.cse0 (mod v_main_~x~0_4 4294967296))) (or (and (= |v_main_#t~post5_3| |v_main_#t~post5_1|) (= v_main_~x~0_4 v_main_~x~0_3) (= |v_main_#t~post6_3| |v_main_#t~post6_1|) (<= .cse0 0) (= v_main_~y~0_3 v_main_~y~0_2)) (and (< v_main_~y~0_3 v_main_~y~0_2) (< 0 .cse0) (forall ((v_it_1 Int)) (or (< 0 (mod (+ v_main_~x~0_4 (* v_it_1 4294967295)) 4294967296)) (not (<= (+ v_main_~y~0_3 v_it_1 1) v_main_~y~0_2)) (not (<= 1 v_it_1)))) (= v_main_~x~0_3 (+ v_main_~x~0_4 v_main_~y~0_3 (* (- 1) v_main_~y~0_2)))))) InVars {main_~y~0=v_main_~y~0_3, main_#t~post5=|v_main_#t~post5_3|, main_~x~0=v_main_~x~0_4, main_#t~post6=|v_main_#t~post6_3|} OutVars{main_~y~0=v_main_~y~0_2, main_#t~post5=|v_main_#t~post5_1|, main_~x~0=v_main_~x~0_3, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post5, main_#t~post6] [2022-04-14 18:56:00,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 06:56:00 BasicIcfg [2022-04-14 18:56:00,634 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-14 18:56:00,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-14 18:56:00,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-14 18:56:00,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-14 18:56:00,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.04 06:55:59" (1/4) ... [2022-04-14 18:56:00,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189f87fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 06:56:00, skipping insertion in model container [2022-04-14 18:56:00,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.04 06:55:59" (2/4) ... [2022-04-14 18:56:00,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189f87fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.04 06:56:00, skipping insertion in model container [2022-04-14 18:56:00,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.04 06:56:00" (3/4) ... [2022-04-14 18:56:00,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189f87fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 06:56:00, skipping insertion in model container [2022-04-14 18:56:00,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.04 06:56:00" (4/4) ... [2022-04-14 18:56:00,646 INFO L111 eAbstractionObserver]: Analyzing ICFG count_up_down-2.cJordan [2022-04-14 18:56:00,650 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-14 18:56:00,651 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-14 18:56:00,693 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-14 18:56:00,701 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-04-14 18:56:00,701 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-14 18:56:00,716 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-14 18:56:00,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-14 18:56:00,721 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 18:56:00,722 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 18:56:00,722 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 18:56:00,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 18:56:00,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2022-04-14 18:56:00,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 18:56:00,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340289005] [2022-04-14 18:56:00,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 18:56:00,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 18:56:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 18:56:00,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-14 18:56:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-14 18:56:00,887 INFO L290 TraceCheckUtils]: 0: Hoare triple {26#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [41] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= (select |v_#length_1| 2) 18) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {21#true} is VALID [2022-04-14 18:56:00,888 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} [44] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21#true} is VALID [2022-04-14 18:56:00,888 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} [56] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21#true} is VALID [2022-04-14 18:56:00,890 INFO L272 TraceCheckUtils]: 0: Hoare triple {21#true} [39] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {26#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-14 18:56:00,890 INFO L290 TraceCheckUtils]: 1: Hoare triple {26#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [41] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= (select |v_#length_1| 2) 18) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {21#true} is VALID [2022-04-14 18:56:00,890 INFO L290 TraceCheckUtils]: 2: Hoare triple {21#true} [44] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21#true} is VALID [2022-04-14 18:56:00,891 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {21#true} {21#true} [56] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21#true} is VALID [2022-04-14 18:56:00,891 INFO L272 TraceCheckUtils]: 4: Hoare triple {21#true} [40] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {21#true} is VALID [2022-04-14 18:56:00,891 INFO L290 TraceCheckUtils]: 5: Hoare triple {21#true} [43] mainENTRY-->L17-2: Formula: (and (= v_main_~y~0_1 0) (= v_main_~n~0_1 v_main_~x~0_1) (= v_main_~n~0_1 |v_main_#t~nondet4_2|)) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~y~0=v_main_~y~0_1, main_~n~0=v_main_~n~0_1, main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~y~0, main_~n~0] {21#true} is VALID [2022-04-14 18:56:00,892 INFO L290 TraceCheckUtils]: 6: Hoare triple {21#true} [45] L17-2-->L17-3: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {22#false} is VALID [2022-04-14 18:56:00,892 INFO L272 TraceCheckUtils]: 7: Hoare triple {22#false} [48] L17-3-->__VERIFIER_assertENTRY: Formula: (= (ite (not (= (mod v_main_~n~0_3 4294967296) (mod v_main_~y~0_5 4294967296))) 1 0) |v___VERIFIER_assert_#in~condInParam_1|) InVars {main_~y~0=v_main_~y~0_5, main_~n~0=v_main_~n~0_3} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_1|} AuxVars[] AssignedVars[__VERIFIER_assert_#in~cond, main_~y~0, main_~n~0] {22#false} is VALID [2022-04-14 18:56:00,893 INFO L290 TraceCheckUtils]: 8: Hoare triple {22#false} [50] __VERIFIER_assertENTRY-->L6: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {22#false} is VALID [2022-04-14 18:56:00,893 INFO L290 TraceCheckUtils]: 9: Hoare triple {22#false} [51] L6-->L7: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {22#false} is VALID [2022-04-14 18:56:00,893 INFO L290 TraceCheckUtils]: 10: Hoare triple {22#false} [53] L7-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {22#false} is VALID [2022-04-14 18:56:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-14 18:56:00,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-14 18:56:00,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340289005] [2022-04-14 18:56:00,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340289005] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-14 18:56:00,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-14 18:56:00,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-14 18:56:00,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239734617] [2022-04-14 18:56:00,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-14 18:56:00,910 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 [2022-04-14 18:56:00,912 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-14 18:56:00,914 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-14 18:56:00,928 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 18:56:00,928 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-14 18:56:00,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-14 18:56:00,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-14 18:56:00,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-14 18:56:00,962 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 18:56:01,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 18:56:01,016 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-04-14 18:56:01,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-14 18:56:01,017 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 [2022-04-14 18:56:01,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-14 18:56:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 18:56:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2022-04-14 18:56:01,031 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-14 18:56:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 20 transitions. [2022-04-14 18:56:01,035 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 20 transitions. [2022-04-14 18:56:01,059 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-14 18:56:01,065 INFO L225 Difference]: With dead ends: 18 [2022-04-14 18:56:01,065 INFO L226 Difference]: Without dead ends: 12 [2022-04-14 18:56:01,067 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-14 18:56:01,072 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-14 18:56:01,073 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-14 18:56:01,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-04-14 18:56:01,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-04-14 18:56:01,096 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-14 18:56:01,097 INFO L82 GeneralOperation]: Start isEquivalent. First operand 12 states. Second operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 18:56:01,097 INFO L74 IsIncluded]: Start isIncluded. First operand 12 states. Second operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 18:56:01,098 INFO L87 Difference]: Start difference. First operand 12 states. Second operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 18:56:01,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 18:56:01,100 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-04-14 18:56:01,100 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-04-14 18:56:01,103 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 18:56:01,104 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 18:56:01,104 INFO L74 IsIncluded]: Start isIncluded. First operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 12 states. [2022-04-14 18:56:01,104 INFO L87 Difference]: Start difference. First operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 12 states. [2022-04-14 18:56:01,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-14 18:56:01,106 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2022-04-14 18:56:01,106 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-04-14 18:56:01,106 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-14 18:56:01,106 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-14 18:56:01,106 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-14 18:56:01,107 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-14 18:56:01,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-14 18:56:01,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-04-14 18:56:01,109 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-04-14 18:56:01,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-14 18:56:01,109 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-04-14 18:56:01,109 INFO L479 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) [2022-04-14 18:56:01,110 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-04-14 18:56:01,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-14 18:56:01,111 INFO L491 BasicCegarLoop]: Found error trace [2022-04-14 18:56:01,112 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-14 18:56:01,114 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-14 18:56:01,115 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-14 18:56:01,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-14 18:56:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2022-04-14 18:56:01,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-14 18:56:01,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087864276] [2022-04-14 18:56:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-14 18:56:01,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-14 18:56:01,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-14 18:56:01,151 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-14 18:56:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-14 18:56:01,195 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-14 18:56:01,195 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-14 18:56:01,196 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-14 18:56:01,198 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-14 18:56:01,200 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-14 18:56:01,203 INFO L177 ceAbstractionStarter]: Computing trace abstraction results [2022-04-14 18:56:01,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.04 06:56:01 BasicIcfg [2022-04-14 18:56:01,223 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-14 18:56:01,225 INFO L158 Benchmark]: Toolchain (without parser) took 1649.81ms. Allocated memory is still 188.7MB. Free memory was 132.9MB in the beginning and 93.9MB in the end (delta: 39.0MB). Peak memory consumption was 37.9MB. Max. memory is 8.0GB. [2022-04-14 18:56:01,226 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory was 149.1MB in the beginning and 149.0MB in the end (delta: 72.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-14 18:56:01,229 INFO L158 Benchmark]: CACSL2BoogieTranslator took 215.50ms. Allocated memory is still 188.7MB. Free memory was 132.7MB in the beginning and 159.2MB in the end (delta: -26.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-14 18:56:01,229 INFO L158 Benchmark]: Boogie Preprocessor took 30.40ms. Allocated memory is still 188.7MB. Free memory was 159.2MB in the beginning and 157.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-14 18:56:01,232 INFO L158 Benchmark]: RCFGBuilder took 203.88ms. Allocated memory is still 188.7MB. Free memory was 157.8MB in the beginning and 147.3MB in the end (delta: 10.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-14 18:56:01,233 INFO L158 Benchmark]: IcfgTransformer took 604.84ms. Allocated memory is still 188.7MB. Free memory was 147.3MB in the beginning and 125.3MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. [2022-04-14 18:56:01,233 INFO L158 Benchmark]: TraceAbstraction took 585.25ms. Allocated memory is still 188.7MB. Free memory was 125.0MB in the beginning and 93.9MB in the end (delta: 31.1MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-04-14 18:56:01,239 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory was 149.1MB in the beginning and 149.0MB in the end (delta: 72.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 215.50ms. Allocated memory is still 188.7MB. Free memory was 132.7MB in the beginning and 159.2MB in the end (delta: -26.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 30.40ms. Allocated memory is still 188.7MB. Free memory was 159.2MB in the beginning and 157.8MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 203.88ms. Allocated memory is still 188.7MB. Free memory was 157.8MB in the beginning and 147.3MB in the end (delta: 10.5MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 604.84ms. Allocated memory is still 188.7MB. Free memory was 147.3MB in the beginning and 125.3MB in the end (delta: 22.0MB). Peak memory consumption was 22.0MB. Max. memory is 8.0GB. * TraceAbstraction took 585.25ms. Allocated memory is still 188.7MB. Free memory was 125.0MB in the beginning and 93.9MB in the end (delta: 31.1MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] unsigned int n = __VERIFIER_nondet_uint(); [L16] unsigned int x=n, y=0; VAL [n=0, x=0, y=0] [L17] COND FALSE !(x>0) VAL [n=0, x=0, y=0] [L22] CALL __VERIFIER_assert(y!=n) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 20 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 17 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-04-14 18:56:01,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...