/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/count_up_down-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-14 20:32:05,781 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-14 20:32:05,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-14 20:32:05,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-14 20:32:05,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-14 20:32:05,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-14 20:32:05,843 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-14 20:32:05,844 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-14 20:32:05,844 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-14 20:32:05,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-14 20:32:05,855 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-14 20:32:05,858 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-14 20:32:05,859 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-14 20:32:05,862 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-14 20:32:05,863 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-14 20:32:05,864 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-14 20:32:05,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-14 20:32:05,870 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-14 20:32:05,870 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-14 20:32:05,871 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-14 20:32:05,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-02-14 20:32:05,889 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-14 20:32:05,889 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-14 20:32:05,890 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-14 20:32:05,890 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-14 20:32:05,890 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-14 20:32:05,891 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-14 20:32:05,891 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-14 20:32:05,891 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-14 20:32:05,891 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-14 20:32:05,891 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-14 20:32:05,891 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-14 20:32:05,892 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-14 20:32:05,892 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-14 20:32:05,892 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-14 20:32:05,892 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-14 20:32:05,892 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-14 20:32:05,892 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-14 20:32:05,892 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-14 20:32:05,892 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:32:05,892 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-14 20:32:05,892 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-14 20:32:05,893 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-14 20:32:05,893 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-14 20:32:06,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-14 20:32:06,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-14 20:32:06,125 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-14 20:32:06,126 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-14 20:32:06,129 INFO L275 PluginConnector]: CDTParser initialized [2022-02-14 20:32:06,130 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/count_up_down-1.c [2022-02-14 20:32:06,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9beee6d77/570658436bbe4fb0af26b87bbc760f27/FLAG4b9b5681c [2022-02-14 20:32:06,534 INFO L306 CDTParser]: Found 1 translation units. [2022-02-14 20:32:06,535 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/count_up_down-1.c [2022-02-14 20:32:06,542 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9beee6d77/570658436bbe4fb0af26b87bbc760f27/FLAG4b9b5681c [2022-02-14 20:32:06,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9beee6d77/570658436bbe4fb0af26b87bbc760f27 [2022-02-14 20:32:06,558 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-14 20:32:06,559 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-14 20:32:06,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-14 20:32:06,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-14 20:32:06,564 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-14 20:32:06,565 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:32:06" (1/1) ... [2022-02-14 20:32:06,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27f187f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:32:06, skipping insertion in model container [2022-02-14 20:32:06,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.02 08:32:06" (1/1) ... [2022-02-14 20:32:06,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-14 20:32:06,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-14 20:32:06,733 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-1.c[327,340] [2022-02-14 20:32:06,748 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:32:06,755 INFO L203 MainTranslator]: Completed pre-run [2022-02-14 20:32:06,764 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-1.c[327,340] [2022-02-14 20:32:06,766 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-14 20:32:06,775 INFO L208 MainTranslator]: Completed translation [2022-02-14 20:32:06,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:32:06 WrapperNode [2022-02-14 20:32:06,776 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-14 20:32:06,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-14 20:32:06,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-14 20:32:06,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-14 20:32:06,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:32:06" (1/1) ... [2022-02-14 20:32:06,785 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:32:06" (1/1) ... [2022-02-14 20:32:06,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:32:06" (1/1) ... [2022-02-14 20:32:06,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:32:06" (1/1) ... [2022-02-14 20:32:06,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:32:06" (1/1) ... [2022-02-14 20:32:06,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:32:06" (1/1) ... [2022-02-14 20:32:06,801 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:32:06" (1/1) ... [2022-02-14 20:32:06,804 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-14 20:32:06,805 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-14 20:32:06,805 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-14 20:32:06,805 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-14 20:32:06,806 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:32:06" (1/1) ... [2022-02-14 20:32:06,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-14 20:32:06,818 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:32:06,829 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) [2022-02-14 20:32:06,851 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 [2022-02-14 20:32:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-14 20:32:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-14 20:32:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-14 20:32:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-14 20:32:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-14 20:32:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-14 20:32:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-14 20:32:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-14 20:32:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-14 20:32:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-14 20:32:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-02-14 20:32:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-14 20:32:06,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-14 20:32:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-14 20:32:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-14 20:32:06,864 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-14 20:32:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-14 20:32:06,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-14 20:32:06,915 INFO L234 CfgBuilder]: Building ICFG [2022-02-14 20:32:06,917 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-14 20:32:07,033 INFO L275 CfgBuilder]: Performing block encoding [2022-02-14 20:32:07,036 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-14 20:32:07,037 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-14 20:32:07,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:32:07 BoogieIcfgContainer [2022-02-14 20:32:07,038 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-14 20:32:07,038 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-14 20:32:07,038 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-14 20:32:07,040 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-14 20:32:07,042 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:32:07" (1/1) ... [2022-02-14 20:32:07,217 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 [2022-02-14 20:32:07,218 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] [2022-02-14 20:32:07,221 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:32:07 BasicIcfg [2022-02-14 20:32:07,221 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-14 20:32:07,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-14 20:32:07,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-14 20:32:07,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-14 20:32:07,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.02 08:32:06" (1/4) ... [2022-02-14 20:32:07,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37debc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:32:07, skipping insertion in model container [2022-02-14 20:32:07,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.02 08:32:06" (2/4) ... [2022-02-14 20:32:07,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37debc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.02 08:32:07, skipping insertion in model container [2022-02-14 20:32:07,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.02 08:32:07" (3/4) ... [2022-02-14 20:32:07,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37debc35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.02 08:32:07, skipping insertion in model container [2022-02-14 20:32:07,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 14.02 08:32:07" (4/4) ... [2022-02-14 20:32:07,226 INFO L111 eAbstractionObserver]: Analyzing ICFG count_up_down-1.cJordan [2022-02-14 20:32:07,230 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-02-14 20:32:07,230 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-14 20:32:07,255 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-14 20:32:07,260 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-14 20:32:07,260 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-14 20:32:07,268 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) [2022-02-14 20:32:07,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-14 20:32:07,272 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:32:07,273 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:32:07,273 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:32:07,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:32:07,277 INFO L85 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2022-02-14 20:32:07,283 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:32:07,283 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005951075] [2022-02-14 20:32:07,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:32:07,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:32:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:32:07,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:32:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:32:07,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:32:07,418 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:32:07,418 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005951075] [2022-02-14 20:32:07,419 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005951075] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:32:07,419 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:32:07,419 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-14 20:32:07,420 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028625057] [2022-02-14 20:32:07,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:32:07,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-14 20:32:07,424 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:32:07,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-14 20:32:07,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-14 20:32:07,449 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) [2022-02-14 20:32:07,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:32:07,476 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-02-14 20:32:07,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-14 20:32:07,478 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 [2022-02-14 20:32:07,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:32:07,484 INFO L225 Difference]: With dead ends: 18 [2022-02-14 20:32:07,485 INFO L226 Difference]: Without dead ends: 12 [2022-02-14 20:32:07,486 INFO L932 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 [2022-02-14 20:32:07,489 INFO L933 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 [2022-02-14 20:32:07,490 INFO L934 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] [2022-02-14 20:32:07,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-02-14 20:32:07,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-02-14 20:32:07,512 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) [2022-02-14 20:32:07,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-02-14 20:32:07,513 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-02-14 20:32:07,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:32:07,514 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-02-14 20:32:07,514 INFO L471 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) [2022-02-14 20:32:07,514 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-02-14 20:32:07,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-14 20:32:07,515 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:32:07,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:32:07,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-14 20:32:07,516 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:32:07,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:32:07,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2022-02-14 20:32:07,518 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:32:07,518 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499702674] [2022-02-14 20:32:07,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:32:07,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:32:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:32:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:32:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:32:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:32:07,725 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:32:07,725 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499702674] [2022-02-14 20:32:07,725 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499702674] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-14 20:32:07,725 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-14 20:32:07,725 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-14 20:32:07,726 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679117737] [2022-02-14 20:32:07,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-14 20:32:07,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-14 20:32:07,727 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-14 20:32:07,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-14 20:32:07,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-02-14 20:32:07,727 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2022-02-14 20:32:07,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-14 20:32:07,803 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-02-14 20:32:07,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-14 20:32:07,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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 [2022-02-14 20:32:07,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-14 20:32:07,804 INFO L225 Difference]: With dead ends: 16 [2022-02-14 20:32:07,804 INFO L226 Difference]: Without dead ends: 13 [2022-02-14 20:32:07,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-02-14 20:32:07,805 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 8 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-14 20:32:07,806 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-02-14 20:32:07,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-02-14 20:32:07,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-02-14 20:32:07,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-02-14 20:32:07,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-02-14 20:32:07,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-02-14 20:32:07,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-14 20:32:07,808 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-02-14 20:32:07,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 5 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) [2022-02-14 20:32:07,808 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-02-14 20:32:07,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-02-14 20:32:07,809 INFO L506 BasicCegarLoop]: Found error trace [2022-02-14 20:32:07,809 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-14 20:32:07,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-14 20:32:07,809 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-14 20:32:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-14 20:32:07,810 INFO L85 PathProgramCache]: Analyzing trace with hash -814146699, now seen corresponding path program 1 times [2022-02-14 20:32:07,810 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-14 20:32:07,810 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544961085] [2022-02-14 20:32:07,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:32:07,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-14 20:32:07,825 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_1.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-14 20:32:07,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:32:07,862 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_1.1))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)))) 0)) [2022-02-14 20:32:08,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-14 20:32:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:32:08,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-14 20:32:08,084 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-14 20:32:08,084 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544961085] [2022-02-14 20:32:08,085 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544961085] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-14 20:32:08,086 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789889980] [2022-02-14 20:32:08,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-14 20:32:08,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-14 20:32:08,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-14 20:32:08,087 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-02-14 20:32:08,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-14 20:32:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-14 20:32:08,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2022-02-14 20:32:08,143 INFO L286 TraceCheckSpWp]: Computing forward predicates...