/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_4-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 03:34:26,495 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 03:34:26,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 03:34:26,538 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 03:34:26,539 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 03:34:26,540 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 03:34:26,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 03:34:26,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 03:34:26,542 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 03:34:26,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 03:34:26,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 03:34:26,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 03:34:26,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 03:34:26,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 03:34:26,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 03:34:26,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 03:34:26,546 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 03:34:26,547 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 03:34:26,548 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 03:34:26,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 03:34:26,550 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 03:34:26,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 03:34:26,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 03:34:26,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 03:34:26,554 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 03:34:26,556 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 03:34:26,556 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 03:34:26,556 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 03:34:26,557 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 03:34:26,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 03:34:26,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 03:34:26,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 03:34:26,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 03:34:26,559 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 03:34:26,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 03:34:26,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 03:34:26,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 03:34:26,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 03:34:26,561 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 03:34:26,561 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 03:34:26,562 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 03:34:26,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 03:34:26,571 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 03:34:26,584 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 03:34:26,584 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 03:34:26,585 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 03:34:26,585 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 03:34:26,585 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 03:34:26,585 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 03:34:26,585 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 03:34:26,585 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 03:34:26,585 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 03:34:26,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 03:34:26,587 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 03:34:26,587 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 03:34:26,587 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 03:34:26,587 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 03:34:26,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 03:34:26,588 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 03:34:26,588 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 03:34:26,588 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 03:34:26,588 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:34:26,588 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 03:34:26,588 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 03:34:26,589 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 03:34:26,589 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 03:34:26,780 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 03:34:26,801 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 03:34:26,803 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 03:34:26,804 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 03:34:26,805 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 03:34:26,806 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_4-1.c [2022-03-20 03:34:26,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/639b4519a/1b6189711053457ca21714b89ef94661/FLAGa59525208 [2022-03-20 03:34:27,168 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 03:34:27,168 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-1.c [2022-03-20 03:34:27,172 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/639b4519a/1b6189711053457ca21714b89ef94661/FLAGa59525208 [2022-03-20 03:34:27,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/639b4519a/1b6189711053457ca21714b89ef94661 [2022-03-20 03:34:27,621 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 03:34:27,623 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 03:34:27,624 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 03:34:27,624 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 03:34:27,627 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 03:34:27,628 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:34:27" (1/1) ... [2022-03-20 03:34:27,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22db5b55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:27, skipping insertion in model container [2022-03-20 03:34:27,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:34:27" (1/1) ... [2022-03-20 03:34:27,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 03:34:27,643 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 03:34:27,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-1.c[322,335] [2022-03-20 03:34:27,758 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:34:27,765 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 03:34:27,784 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_4-1.c[322,335] [2022-03-20 03:34:27,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:34:27,794 INFO L208 MainTranslator]: Completed translation [2022-03-20 03:34:27,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:27 WrapperNode [2022-03-20 03:34:27,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 03:34:27,795 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 03:34:27,795 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 03:34:27,795 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 03:34:27,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:27" (1/1) ... [2022-03-20 03:34:27,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:27" (1/1) ... [2022-03-20 03:34:27,806 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:27" (1/1) ... [2022-03-20 03:34:27,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:27" (1/1) ... [2022-03-20 03:34:27,809 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:27" (1/1) ... [2022-03-20 03:34:27,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:27" (1/1) ... [2022-03-20 03:34:27,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:27" (1/1) ... [2022-03-20 03:34:27,813 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 03:34:27,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 03:34:27,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 03:34:27,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 03:34:27,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:27" (1/1) ... [2022-03-20 03:34:27,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:34:27,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:34:27,841 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) [2022-03-20 03:34:27,843 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 [2022-03-20 03:34:27,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 03:34:27,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 03:34:27,870 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 03:34:27,870 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 03:34:27,870 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 03:34:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 03:34:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 03:34:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 03:34:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 03:34:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 03:34:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 03:34:27,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 03:34:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 03:34:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 03:34:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 03:34:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 03:34:27,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 03:34:27,912 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 03:34:27,913 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 03:34:27,984 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 03:34:27,988 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 03:34:27,988 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 03:34:27,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:27 BoogieIcfgContainer [2022-03-20 03:34:27,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 03:34:27,990 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 03:34:27,990 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 03:34:27,995 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 03:34:27,998 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:27" (1/1) ... [2022-03-20 03:34:28,000 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 03:34:28,180 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 03:34:28,181 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_1 (+ (- 2) v_main_~x~0_2)) (< 1 (mod v_main_~x~0_2 4294967296))) InVars {main_~x~0=v_main_~x~0_2} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[main_~x~0] to Formula: (let ((.cse0 (mod v_main_~x~0_2 4294967296))) (or (and (= v_main_~x~0_2 v_main_~x~0_1) (<= .cse0 1)) (and (= (mod (+ v_main_~x~0_2 v_main_~x~0_1) 2) 0) (< 1 .cse0) (< 0 (div (+ v_main_~x~0_1 (* (- 1) v_main_~x~0_2)) (- 2))) (forall ((v_it_1 Int)) (or (not (<= (+ v_it_1 1) (div (+ v_main_~x~0_1 (* (- 1) v_main_~x~0_2)) (- 2)))) (not (<= 1 v_it_1)) (< 1 (mod (+ v_main_~x~0_2 (* v_it_1 4294967294)) 4294967296))))))) InVars {main_~x~0=v_main_~x~0_2} OutVars{main_~x~0=v_main_~x~0_1} AuxVars[] AssignedVars[main_~x~0] [2022-03-20 03:34:28,185 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:34:28 BasicIcfg [2022-03-20 03:34:28,185 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 03:34:28,186 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 03:34:28,186 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 03:34:28,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 03:34:28,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 03:34:27" (1/4) ... [2022-03-20 03:34:28,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b745b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:34:28, skipping insertion in model container [2022-03-20 03:34:28,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:27" (2/4) ... [2022-03-20 03:34:28,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b745b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:34:28, skipping insertion in model container [2022-03-20 03:34:28,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:27" (3/4) ... [2022-03-20 03:34:28,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32b745b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:34:28, skipping insertion in model container [2022-03-20 03:34:28,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:34:28" (4/4) ... [2022-03-20 03:34:28,191 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_4-1.cJordan [2022-03-20 03:34:28,195 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 03:34:28,196 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 03:34:28,225 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 03:34:28,230 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 [2022-03-20 03:34:28,230 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 03:34:28,239 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 03:34:28,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 03:34:28,244 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:28,244 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:28,245 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:28,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:28,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2022-03-20 03:34:28,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:28,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117489960] [2022-03-20 03:34:28,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:28,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:28,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:34:28,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:28,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:34:28,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:34:28,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117489960] [2022-03-20 03:34:28,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117489960] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:34:28,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:34:28,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 03:34:28,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513039596] [2022-03-20 03:34:28,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:34:28,410 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 03:34:28,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:34:28,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 03:34:28,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 03:34:28,441 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) [2022-03-20 03:34:28,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:34:28,475 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-03-20 03:34:28,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 03:34:28,482 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 [2022-03-20 03:34:28,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:34:28,489 INFO L225 Difference]: With dead ends: 18 [2022-03-20 03:34:28,489 INFO L226 Difference]: Without dead ends: 12 [2022-03-20 03:34:28,491 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 [2022-03-20 03:34:28,494 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 [2022-03-20 03:34:28,496 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] [2022-03-20 03:34:28,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-03-20 03:34:28,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-03-20 03:34:28,518 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) [2022-03-20 03:34:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-03-20 03:34:28,519 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-03-20 03:34:28,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:34:28,520 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-03-20 03:34:28,520 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) [2022-03-20 03:34:28,520 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-03-20 03:34:28,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 03:34:28,521 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:28,521 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:28,521 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 03:34:28,521 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:28,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:28,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2022-03-20 03:34:28,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:28,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738314529] [2022-03-20 03:34:28,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:28,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:28,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:34:28,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:34:28,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:34:28,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738314529] [2022-03-20 03:34:28,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738314529] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:34:28,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:34:28,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 03:34:28,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683693199] [2022-03-20 03:34:28,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:34:28,642 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 03:34:28,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:34:28,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 03:34:28,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 03:34:28,643 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:34:28,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:34:28,666 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-03-20 03:34:28,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 03:34:28,666 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-03-20 03:34:28,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:34:28,667 INFO L225 Difference]: With dead ends: 13 [2022-03-20 03:34:28,667 INFO L226 Difference]: Without dead ends: 13 [2022-03-20 03:34:28,667 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 03:34:28,668 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 4 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 03:34:28,671 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-03-20 03:34:28,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-20 03:34:28,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-20 03:34:28,673 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) [2022-03-20 03:34:28,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-20 03:34:28,674 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-03-20 03:34:28,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:34:28,674 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-20 03:34:28,674 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 3 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:34:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-20 03:34:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 03:34:28,675 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:28,675 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:28,675 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 03:34:28,675 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:28,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:28,676 INFO L85 PathProgramCache]: Analyzing trace with hash -814146699, now seen corresponding path program 1 times [2022-03-20 03:34:28,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:28,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642417845] [2022-03-20 03:34:28,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:28,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:28,692 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967294 .v_it_1.0))) (+ main_~x~0_5 .cse0 (* (- 4294967296) (div (+ main_~x~0_5 .cse0) 4294967296)) (- 1))) 0)) [2022-03-20 03:34:28,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2022-03-20 03:34:28,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1900215710] [2022-03-20 03:34:28,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:28,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:34:28,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:34:28,721 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) [2022-03-20 03:34:28,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-20 03:34:28,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 03:34:28,754 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 03:34:28,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 03:34:28,787 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 03:34:28,787 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 03:34:28,788 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 03:34:28,796 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 03:34:28,990 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:34:28,992 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-20 03:34:28,994 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 03:34:29,005 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:34:29 BasicIcfg [2022-03-20 03:34:29,005 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 03:34:29,006 INFO L158 Benchmark]: Toolchain (without parser) took 1383.25ms. Allocated memory is still 208.7MB. Free memory was 153.7MB in the beginning and 125.5MB in the end (delta: 28.2MB). Peak memory consumption was 27.9MB. Max. memory is 8.0GB. [2022-03-20 03:34:29,006 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 208.7MB. Free memory was 169.8MB in the beginning and 169.7MB in the end (delta: 68.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:34:29,007 INFO L158 Benchmark]: CACSL2BoogieTranslator took 171.02ms. Allocated memory is still 208.7MB. Free memory was 153.5MB in the beginning and 179.0MB in the end (delta: -25.5MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. [2022-03-20 03:34:29,007 INFO L158 Benchmark]: Boogie Preprocessor took 17.50ms. Allocated memory is still 208.7MB. Free memory was 179.0MB in the beginning and 177.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 03:34:29,007 INFO L158 Benchmark]: RCFGBuilder took 176.27ms. Allocated memory is still 208.7MB. Free memory was 177.4MB in the beginning and 168.0MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-20 03:34:29,008 INFO L158 Benchmark]: IcfgTransformer took 194.94ms. Allocated memory is still 208.7MB. Free memory was 168.0MB in the beginning and 160.1MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-20 03:34:29,008 INFO L158 Benchmark]: TraceAbstraction took 819.29ms. Allocated memory is still 208.7MB. Free memory was 159.6MB in the beginning and 125.5MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-03-20 03:34:29,009 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 208.7MB. Free memory was 169.8MB in the beginning and 169.7MB in the end (delta: 68.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 171.02ms. Allocated memory is still 208.7MB. Free memory was 153.5MB in the beginning and 179.0MB in the end (delta: -25.5MB). Peak memory consumption was 12.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.50ms. Allocated memory is still 208.7MB. Free memory was 179.0MB in the beginning and 177.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 176.27ms. Allocated memory is still 208.7MB. Free memory was 177.4MB in the beginning and 168.0MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 194.94ms. Allocated memory is still 208.7MB. Free memory was 168.0MB in the beginning and 160.1MB in the end (delta: 7.9MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 819.29ms. Allocated memory is still 208.7MB. Free memory was 159.6MB in the beginning and 125.5MB in the end (delta: 34.1MB). Peak memory consumption was 33.6MB. 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: [L13] unsigned int x = 0x0ffffff1; VAL [x=268435441] [L15] COND TRUE x > 1 [L16] x -= 2 VAL [x=1] [L15] COND FALSE !(x > 1) VAL [x=1] [L19] CALL __VERIFIER_assert(!(x % 2)) 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: 0.8s, OverallIterations: 3, 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, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 38 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 9 IncrementalHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 28 mSDtfsCounter, 9 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 40 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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! [2022-03-20 03:34:29,025 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...