/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/in-de32.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 12:47:39,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 12:47:39,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 12:47:39,638 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 12:47:39,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 12:47:39,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 12:47:39,643 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 12:47:39,647 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 12:47:39,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 12:47:39,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 12:47:39,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 12:47:39,649 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 12:47:39,649 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 12:47:39,650 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 12:47:39,651 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 12:47:39,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 12:47:39,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 12:47:39,652 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 12:47:39,653 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 12:47:39,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 12:47:39,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 12:47:39,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 12:47:39,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 12:47:39,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 12:47:39,671 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-31 12:47:39,672 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-31 12:47:39,672 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-31 12:47:39,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-31 12:47:39,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-31 12:47:39,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-31 12:47:39,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 12:47:39,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 12:47:39,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 12:47:39,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 12:47:39,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 12:47:39,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 12:47:39,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 12:47:39,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 12:47:39,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 12:47:39,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 12:47:39,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 12:47:39,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 12:47:39,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 12:47:39,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 12:47:39,689 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 12:47:39,689 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 12:47:39,689 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 12:47:39,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 12:47:39,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 12:47:39,690 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 12:47:39,690 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 12:47:39,690 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 12:47:39,691 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 12:47:39,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 12:47:39,691 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 12:47:39,691 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 12:47:39,691 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 12:47:39,691 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 12:47:39,691 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 12:47:39,692 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 12:47:39,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 12:47:39,692 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 12:47:39,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 12:47:39,693 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 12:47:39,693 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 12:47:39,882 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 12:47:39,896 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 12:47:39,897 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 12:47:39,898 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 12:47:39,899 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 12:47:39,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/in-de32.c [2022-01-31 12:47:39,937 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b64725e/f902b4bac05a42cebc3bc7b8baa90345/FLAG0c22afa08 [2022-01-31 12:47:40,287 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 12:47:40,288 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de32.c [2022-01-31 12:47:40,291 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b64725e/f902b4bac05a42cebc3bc7b8baa90345/FLAG0c22afa08 [2022-01-31 12:47:40,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/37b64725e/f902b4bac05a42cebc3bc7b8baa90345 [2022-01-31 12:47:40,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 12:47:40,746 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 12:47:40,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 12:47:40,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 12:47:40,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 12:47:40,750 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:47:40" (1/1) ... [2022-01-31 12:47:40,750 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19c1e5ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:47:40, skipping insertion in model container [2022-01-31 12:47:40,751 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 12:47:40" (1/1) ... [2022-01-31 12:47:40,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 12:47:40,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 12:47:40,902 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-crafted-1/in-de32.c[368,381] [2022-01-31 12:47:40,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 12:47:40,927 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 12:47:40,936 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-crafted-1/in-de32.c[368,381] [2022-01-31 12:47:40,941 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 12:47:40,950 INFO L208 MainTranslator]: Completed translation [2022-01-31 12:47:40,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:47:40 WrapperNode [2022-01-31 12:47:40,951 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 12:47:40,952 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 12:47:40,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 12:47:40,952 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 12:47:40,960 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:47:40" (1/1) ... [2022-01-31 12:47:40,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:47:40" (1/1) ... [2022-01-31 12:47:40,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:47:40" (1/1) ... [2022-01-31 12:47:40,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:47:40" (1/1) ... [2022-01-31 12:47:40,976 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:47:40" (1/1) ... [2022-01-31 12:47:40,981 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:47:40" (1/1) ... [2022-01-31 12:47:40,985 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:47:40" (1/1) ... [2022-01-31 12:47:40,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 12:47:40,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 12:47:40,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 12:47:40,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 12:47:40,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:47:40" (1/1) ... [2022-01-31 12:47:40,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 12:47:41,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:47:41,024 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) [2022-01-31 12:47:41,030 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 [2022-01-31 12:47:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 12:47:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 12:47:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 12:47:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 12:47:41,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 12:47:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 12:47:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 12:47:41,063 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 12:47:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 12:47:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-01-31 12:47:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 12:47:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 12:47:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 12:47:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 12:47:41,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 12:47:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 12:47:41,065 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 12:47:41,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 12:47:41,109 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 12:47:41,110 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 12:47:41,197 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 12:47:41,200 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 12:47:41,201 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-31 12:47:41,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:47:41 BoogieIcfgContainer [2022-01-31 12:47:41,202 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 12:47:41,202 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 12:47:41,202 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 12:47:41,203 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 12:47:41,205 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:47:41" (1/1) ... [2022-01-31 12:47:41,413 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 [2022-01-31 12:47:41,414 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_7 (+ v_main_~x~0_6 1)) (< 0 (mod v_main_~x~0_7 4294967296)) (= v_main_~y~0_5 (+ v_main_~y~0_6 1))) InVars {main_~x~0=v_main_~x~0_7, main_~y~0=v_main_~y~0_6} OutVars{main_~x~0=v_main_~x~0_6, main_~y~0=v_main_~y~0_5, 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_7 4294967296))) (or (and (= |v_main_#t~post5_3| |v_main_#t~post5_1|) (= |v_main_#t~post6_3| |v_main_#t~post6_1|) (<= .cse0 0) (= v_main_~x~0_7 v_main_~x~0_6) (= v_main_~y~0_6 v_main_~y~0_5)) (and (< 0 .cse0) (forall ((v_it_1 Int)) (or (< 0 (mod (+ v_main_~x~0_7 (* v_it_1 4294967295)) 4294967296)) (not (<= 1 v_it_1)) (not (<= (+ v_main_~y~0_6 v_it_1 1) v_main_~y~0_5)))) (< v_main_~y~0_6 v_main_~y~0_5) (= v_main_~x~0_6 (+ v_main_~x~0_7 v_main_~y~0_6 (* (- 1) v_main_~y~0_5)))))) InVars {main_~y~0=v_main_~y~0_6, main_#t~post5=|v_main_#t~post5_3|, main_~x~0=v_main_~x~0_7, main_#t~post6=|v_main_#t~post6_3|} OutVars{main_~y~0=v_main_~y~0_5, main_#t~post5=|v_main_#t~post5_1|, main_~x~0=v_main_~x~0_6, main_#t~post6=|v_main_#t~post6_1|} AuxVars[] AssignedVars[main_~x~0, main_~y~0, main_#t~post5, main_#t~post6] [2022-01-31 12:47:41,533 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 [2022-01-31 12:47:41,534 INFO L91 elerationTransformer]: Accelerated Formula: (and (< 0 (mod v_main_~z~0_5 4294967296)) (= v_main_~x~0_8 (+ v_main_~x~0_9 1)) (= v_main_~z~0_5 (+ v_main_~z~0_4 1))) InVars {main_~x~0=v_main_~x~0_9, main_~z~0=v_main_~z~0_5} OutVars{main_~x~0=v_main_~x~0_8, main_~z~0=v_main_~z~0_4, main_#t~post8=|v_main_#t~post8_1|, main_#t~post7=|v_main_#t~post7_1|} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post8, main_#t~post7] to Formula: (let ((.cse0 (mod v_main_~z~0_5 4294967296))) (or (and (= v_main_~x~0_9 v_main_~x~0_8) (<= .cse0 0) (= v_main_~z~0_5 v_main_~z~0_4) (= |v_main_#t~post7_3| |v_main_#t~post7_1|) (= |v_main_#t~post8_3| |v_main_#t~post8_1|)) (and (< 0 .cse0) (= v_main_~x~0_8 (+ (* (- 1) v_main_~z~0_4) v_main_~x~0_9 v_main_~z~0_5)) (forall ((v_it_2 Int)) (or (not (<= 1 v_it_2)) (not (<= (+ v_main_~z~0_4 v_it_2 1) v_main_~z~0_5)) (< 0 (mod (+ v_main_~z~0_5 (* v_it_2 4294967295)) 4294967296)))) (< v_main_~z~0_4 v_main_~z~0_5)))) InVars {main_~x~0=v_main_~x~0_9, main_#t~post8=|v_main_#t~post8_3|, main_~z~0=v_main_~z~0_5, main_#t~post7=|v_main_#t~post7_3|} OutVars{main_~x~0=v_main_~x~0_8, main_#t~post8=|v_main_#t~post8_1|, main_~z~0=v_main_~z~0_4, main_#t~post7=|v_main_#t~post7_1|} AuxVars[] AssignedVars[main_~x~0, main_~z~0, main_#t~post8, main_#t~post7] [2022-01-31 12:47:41,639 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 [2022-01-31 12:47:41,640 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_3 (+ v_main_~x~0_2 1)) (< 0 (mod v_main_~y~0_4 4294967296)) (= v_main_~y~0_4 (+ v_main_~y~0_3 1))) InVars {main_~x~0=v_main_~x~0_3, main_~y~0=v_main_~y~0_4} OutVars{main_#t~post10=|v_main_#t~post10_1|, main_~x~0=v_main_~x~0_2, main_~y~0=v_main_~y~0_3, main_#t~post9=|v_main_#t~post9_1|} AuxVars[] AssignedVars[main_#t~post10, main_~x~0, main_~y~0, main_#t~post9] to Formula: (let ((.cse0 (mod v_main_~y~0_4 4294967296))) (or (and (< 0 .cse0) (forall ((v_it_3 Int)) (or (not (<= 1 v_it_3)) (< 0 (mod (+ v_main_~y~0_4 (* v_it_3 4294967295)) 4294967296)) (not (<= (+ v_main_~y~0_3 v_it_3 1) v_main_~y~0_4)))) (= (+ v_main_~x~0_3 v_main_~y~0_3 (* (- 1) v_main_~y~0_4)) v_main_~x~0_2) (< v_main_~y~0_3 v_main_~y~0_4)) (and (= |v_main_#t~post10_3| |v_main_#t~post10_1|) (= v_main_~y~0_4 v_main_~y~0_3) (<= .cse0 0) (= v_main_~x~0_3 v_main_~x~0_2) (= |v_main_#t~post9_3| |v_main_#t~post9_1|)))) InVars {main_~y~0=v_main_~y~0_4, main_#t~post10=|v_main_#t~post10_3|, main_~x~0=v_main_~x~0_3, main_#t~post9=|v_main_#t~post9_3|} OutVars{main_~y~0=v_main_~y~0_3, main_#t~post10=|v_main_#t~post10_1|, main_~x~0=v_main_~x~0_2, main_#t~post9=|v_main_#t~post9_1|} AuxVars[] AssignedVars[main_#t~post10, main_~x~0, main_~y~0, main_#t~post9] [2022-01-31 12:47:41,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 12:47:41 BasicIcfg [2022-01-31 12:47:41,643 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 12:47:41,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 12:47:41,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 12:47:41,646 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 12:47:41,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 12:47:40" (1/4) ... [2022-01-31 12:47:41,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669acf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:47:41, skipping insertion in model container [2022-01-31 12:47:41,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 12:47:40" (2/4) ... [2022-01-31 12:47:41,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669acf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 12:47:41, skipping insertion in model container [2022-01-31 12:47:41,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 12:47:41" (3/4) ... [2022-01-31 12:47:41,647 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669acf3c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 12:47:41, skipping insertion in model container [2022-01-31 12:47:41,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 12:47:41" (4/4) ... [2022-01-31 12:47:41,648 INFO L111 eAbstractionObserver]: Analyzing ICFG in-de32.cJordan [2022-01-31 12:47:41,652 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 12:47:41,652 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 12:47:41,687 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 12:47:41,691 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 [2022-01-31 12:47:41,691 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 12:47:41,698 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-01-31 12:47:41,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 12:47:41,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:47:41,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:47:41,703 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:47:41,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:47:41,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1909530012, now seen corresponding path program 1 times [2022-01-31 12:47:41,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:47:41,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1752840811] [2022-01-31 12:47:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:47:41,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:47:41,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:41,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:47:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:41,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:47:41,807 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:47:41,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1752840811] [2022-01-31 12:47:41,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1752840811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 12:47:41,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 12:47:41,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-31 12:47:41,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29038244] [2022-01-31 12:47:41,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 12:47:41,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-31 12:47:41,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:47:41,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-31 12:47:41,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-31 12:47:41,844 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-01-31 12:47:41,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:47:41,870 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2022-01-31 12:47:41,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-31 12:47:41,873 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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 14 [2022-01-31 12:47:41,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:47:41,879 INFO L225 Difference]: With dead ends: 22 [2022-01-31 12:47:41,879 INFO L226 Difference]: Without dead ends: 15 [2022-01-31 12:47:41,880 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 [2022-01-31 12:47:41,883 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 26 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 [2022-01-31 12:47:41,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 26 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-31 12:47:41,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-31 12:47:41,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-01-31 12:47:41,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.3) internal successors, (13), 10 states have internal predecessors, (13), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:47:41,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-01-31 12:47:41,903 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 14 [2022-01-31 12:47:41,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:47:41,903 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-01-31 12:47:41,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 2 states have internal predecessors, (10), 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) [2022-01-31 12:47:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-01-31 12:47:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-31 12:47:41,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:47:41,904 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:47:41,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 12:47:41,904 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:47:41,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:47:41,906 INFO L85 PathProgramCache]: Analyzing trace with hash -137167005, now seen corresponding path program 1 times [2022-01-31 12:47:41,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:47:41,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502025659] [2022-01-31 12:47:41,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:47:41,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:47:41,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:42,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:47:42,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:47:42,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:47:42,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502025659] [2022-01-31 12:47:42,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502025659] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-31 12:47:42,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-31 12:47:42,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-31 12:47:42,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861561870] [2022-01-31 12:47:42,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-31 12:47:42,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-31 12:47:42,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:47:42,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-31 12:47:42,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-31 12:47:42,031 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-01-31 12:47:42,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:47:42,087 INFO L93 Difference]: Finished difference Result 21 states and 25 transitions. [2022-01-31 12:47:42,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-31 12:47:42,088 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 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 14 [2022-01-31 12:47:42,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:47:42,088 INFO L225 Difference]: With dead ends: 21 [2022-01-31 12:47:42,088 INFO L226 Difference]: Without dead ends: 18 [2022-01-31 12:47:42,090 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-01-31 12:47:42,091 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 11 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 12:47:42,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 33 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 26 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2022-01-31 12:47:42,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-01-31 12:47:42,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2022-01-31 12:47:42,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 12 states have internal predecessors, (16), 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) [2022-01-31 12:47:42,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2022-01-31 12:47:42,099 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 14 [2022-01-31 12:47:42,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:47:42,101 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2022-01-31 12:47:42,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 4 states have internal predecessors, (10), 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) [2022-01-31 12:47:42,103 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2022-01-31 12:47:42,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-31 12:47:42,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:47:42,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:47:42,104 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-31 12:47:42,104 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:47:42,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:47:42,104 INFO L85 PathProgramCache]: Analyzing trace with hash 69510770, now seen corresponding path program 1 times [2022-01-31 12:47:42,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:47:42,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526633088] [2022-01-31 12:47:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:47:42,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:47:42,112 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.0))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-01-31 12:47:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:42,149 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.1))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-01-31 12:47:42,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:47:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:42,207 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:47:42,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:47:42,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526633088] [2022-01-31 12:47:42,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526633088] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 12:47:42,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775477901] [2022-01-31 12:47:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:47:42,208 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:47:42,208 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:47:42,226 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) [2022-01-31 12:47:42,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-31 12:47:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:42,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 12:47:42,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:47:42,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:47:42,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:47:45,608 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:47:45,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775477901] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:47:45,609 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 12:47:45,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-01-31 12:47:45,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085696331] [2022-01-31 12:47:45,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 12:47:45,610 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 12:47:45,610 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:47:45,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 12:47:45,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=140, Unknown=2, NotChecked=0, Total=182 [2022-01-31 12:47:45,611 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 14 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:47:47,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:47:47,992 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-01-31 12:47:47,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-31 12:47:47,993 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-01-31 12:47:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:47:47,993 INFO L225 Difference]: With dead ends: 26 [2022-01-31 12:47:47,993 INFO L226 Difference]: Without dead ends: 23 [2022-01-31 12:47:47,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=106, Invalid=354, Unknown=2, NotChecked=0, Total=462 [2022-01-31 12:47:47,994 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 19 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 28 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 12:47:47,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 67 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 61 Invalid, 0 Unknown, 28 Unchecked, 0.0s Time] [2022-01-31 12:47:47,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-01-31 12:47:47,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2022-01-31 12:47:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 13 states have internal predecessors, (17), 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) [2022-01-31 12:47:47,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2022-01-31 12:47:47,997 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 15 [2022-01-31 12:47:47,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:47:47,997 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2022-01-31 12:47:47,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.5) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:47:47,997 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2022-01-31 12:47:47,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-31 12:47:47,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:47:47,997 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:47:48,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-31 12:47:48,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:47:48,198 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:47:48,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:47:48,199 INFO L85 PathProgramCache]: Analyzing trace with hash 842497847, now seen corresponding path program 1 times [2022-01-31 12:47:48,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:47:48,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406035876] [2022-01-31 12:47:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:47:48,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:47:48,205 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_2.0))) (+ main_~z~0_7 .cse0 (* (- 4294967296) (div (+ main_~z~0_7 .cse0) 4294967296)))) 0)) [2022-01-31 12:47:48,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:48,230 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_2.1))) (+ main_~z~0_7 .cse0 (* (- 4294967296) (div (+ main_~z~0_7 .cse0) 4294967296)))) 0)) [2022-01-31 12:47:48,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:47:48,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:48,296 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:47:48,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:47:48,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406035876] [2022-01-31 12:47:48,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406035876] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 12:47:48,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591779332] [2022-01-31 12:47:48,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:47:48,297 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:47:48,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:47:48,305 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:47:48,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-31 12:47:48,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:48,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-31 12:47:48,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:47:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:47:48,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:47:48,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-31 12:47:48,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1591779332] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:47:48,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 12:47:48,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 7] total 14 [2022-01-31 12:47:48,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845477509] [2022-01-31 12:47:48,789 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 12:47:48,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-31 12:47:48,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:47:48,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-31 12:47:48,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-01-31 12:47:48,790 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:47:50,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:47:50,981 INFO L93 Difference]: Finished difference Result 31 states and 40 transitions. [2022-01-31 12:47:50,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-31 12:47:50,982 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-01-31 12:47:50,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:47:50,984 INFO L225 Difference]: With dead ends: 31 [2022-01-31 12:47:50,984 INFO L226 Difference]: Without dead ends: 27 [2022-01-31 12:47:50,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=100, Invalid=361, Unknown=1, NotChecked=0, Total=462 [2022-01-31 12:47:50,985 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 23 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-31 12:47:50,985 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 59 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 66 Invalid, 0 Unknown, 22 Unchecked, 0.1s Time] [2022-01-31 12:47:50,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-01-31 12:47:50,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 19. [2022-01-31 12:47:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-01-31 12:47:50,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2022-01-31 12:47:50,988 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 15 [2022-01-31 12:47:50,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:47:50,988 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2022-01-31 12:47:50,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 11 states have internal predecessors, (24), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:47:50,988 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2022-01-31 12:47:50,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-31 12:47:50,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:47:50,989 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:47:51,007 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-31 12:47:51,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-01-31 12:47:51,200 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:47:51,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:47:51,200 INFO L85 PathProgramCache]: Analyzing trace with hash -2113412797, now seen corresponding path program 2 times [2022-01-31 12:47:51,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:47:51,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439504397] [2022-01-31 12:47:51,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:47:51,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:47:51,208 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.0))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-01-31 12:47:51,209 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.1))) (+ main_~y~0_9 .cse0 (* (- 4294967296) (div (+ main_~y~0_9 .cse0) 4294967296)))) 0)) [2022-01-31 12:47:51,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:51,233 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.3))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-01-31 12:47:51,238 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.4))) (+ main_~y~0_9 .cse0 (* (- 4294967296) (div (+ main_~y~0_9 .cse0) 4294967296)))) 0)) [2022-01-31 12:47:51,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:47:51,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:47:51,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 12:47:51,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:47:51,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439504397] [2022-01-31 12:47:51,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439504397] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 12:47:51,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [95882975] [2022-01-31 12:47:51,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-31 12:47:51,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:47:51,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:47:51,316 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:47:51,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-31 12:47:51,343 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-31 12:47:51,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-31 12:47:51,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 11 conjunts are in the unsatisfiable core [2022-01-31 12:47:51,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-31 12:47:51,417 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 12:47:51,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-31 12:47:57,900 WARN L838 $PredicateComparison]: unable to prove that (forall ((aux_mod_v_main_~x~0_17_31 Int)) (or (<= aux_mod_v_main_~x~0_17_31 0) (let ((.cse0 (< 0 (mod c_main_~y~0 4294967296)))) (and (or .cse0 (forall ((aux_div_v_main_~x~0_17_31 Int)) (not (= (+ aux_mod_v_main_~x~0_17_31 (* aux_div_v_main_~x~0_17_31 4294967296)) c_main_~x~0)))) (or (not .cse0) (and (forall ((aux_div_v_main_~x~0_17_31 Int) (aux_mod_v_main_~x~0_18_70 Int) (aux_div_v_main_~x~0_18_70 Int)) (let ((.cse1 (+ aux_mod_v_main_~x~0_18_70 (* aux_div_v_main_~x~0_18_70 4294967296)))) (or (exists ((v_it_3 Int)) (and (not (< 0 (mod (+ (* v_it_3 4294967295) c_main_~y~0) 4294967296))) (<= 1 v_it_3) (<= (+ aux_mod_v_main_~x~0_18_70 (* aux_div_v_main_~x~0_18_70 4294967296) v_it_3 1) (+ (* 4294967296 c_main_~x~0) c_main_~y~0)))) (exists ((v_it_3 Int)) (and (not (< 0 (mod (+ aux_mod_v_main_~x~0_18_70 (* v_it_3 4294967295)) 4294967296))) (<= (+ aux_mod_v_main_~x~0_17_31 v_it_3 (* aux_div_v_main_~x~0_17_31 4294967296) (* 4294967295 c_main_~x~0) c_main_~y~0 1) (+ aux_mod_v_main_~x~0_18_70 (* aux_div_v_main_~x~0_18_70 4294967296))) (<= 1 v_it_3))) (<= .cse1 (+ aux_mod_v_main_~x~0_17_31 (* aux_div_v_main_~x~0_17_31 4294967296) (* 4294967295 c_main_~x~0) c_main_~y~0)) (<= aux_mod_v_main_~x~0_18_70 0) (<= (+ (* 4294967296 c_main_~x~0) c_main_~y~0) .cse1) (<= 4294967296 aux_mod_v_main_~x~0_18_70)))) (or (forall ((aux_div_v_main_~x~0_17_31 Int)) (or (exists ((v_it_3 Int)) (and (not (< 0 (mod (+ (* v_it_3 4294967295) c_main_~y~0) 4294967296))) (<= 1 v_it_3) (<= (+ aux_mod_v_main_~x~0_17_31 v_it_3 (* aux_div_v_main_~x~0_17_31 4294967296) 1) c_main_~x~0))) (not (< (+ aux_mod_v_main_~x~0_17_31 (* aux_div_v_main_~x~0_17_31 4294967296)) c_main_~x~0)))) (< 0 (mod (+ aux_mod_v_main_~x~0_17_31 (* 4294967295 c_main_~x~0) c_main_~y~0) 4294967296))))))) (<= 4294967296 aux_mod_v_main_~x~0_17_31))) is different from false [2022-01-31 12:48:05,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2022-01-31 12:48:05,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [95882975] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-31 12:48:05,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-31 12:48:05,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 15 [2022-01-31 12:48:05,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473352228] [2022-01-31 12:48:05,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-31 12:48:05,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-31 12:48:05,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-31 12:48:05,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-31 12:48:05,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=139, Unknown=5, NotChecked=24, Total=210 [2022-01-31 12:48:05,039 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:48:19,378 WARN L228 SmtUtils]: Spent 6.29s on a formula simplification that was a NOOP. DAG size: 79 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-01-31 12:48:19,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-31 12:48:19,428 INFO L93 Difference]: Finished difference Result 32 states and 40 transitions. [2022-01-31 12:48:19,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-31 12:48:19,429 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-01-31 12:48:19,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-31 12:48:19,429 INFO L225 Difference]: With dead ends: 32 [2022-01-31 12:48:19,429 INFO L226 Difference]: Without dead ends: 25 [2022-01-31 12:48:19,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 25 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 25.6s TimeCoverageRelationStatistics Valid=107, Invalid=352, Unknown=7, NotChecked=40, Total=506 [2022-01-31 12:48:19,430 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 20 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 41 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-31 12:48:19,430 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 75 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 77 Invalid, 0 Unknown, 41 Unchecked, 0.0s Time] [2022-01-31 12:48:19,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-31 12:48:19,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2022-01-31 12:48:19,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 18 states have internal predecessors, (24), 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) [2022-01-31 12:48:19,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 28 transitions. [2022-01-31 12:48:19,432 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 28 transitions. Word has length 16 [2022-01-31 12:48:19,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-31 12:48:19,433 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 28 transitions. [2022-01-31 12:48:19,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 12 states have internal predecessors, (23), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-01-31 12:48:19,433 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 28 transitions. [2022-01-31 12:48:19,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-31 12:48:19,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 12:48:19,433 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 12:48:19,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-31 12:48:19,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:48:19,634 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 12:48:19,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 12:48:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash 374350110, now seen corresponding path program 1 times [2022-01-31 12:48:19,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 12:48:19,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719730135] [2022-01-31 12:48:19,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:48:19,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 12:48:19,639 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_2.0))) (+ main_~z~0_7 .cse0 (* (- 4294967296) (div (+ main_~z~0_7 .cse0) 4294967296)))) 0)) [2022-01-31 12:48:19,640 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.1))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-01-31 12:48:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:48:19,685 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_2.3))) (+ main_~z~0_7 .cse0 (* (- 4294967296) (div (+ main_~z~0_7 .cse0) 4294967296)))) 0)) [2022-01-31 12:48:19,689 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (let ((.cse0 (* 4294967295 .v_it_3.4))) (+ main_~y~0_5 .cse0 (* (- 4294967296) (div (+ main_~y~0_5 .cse0) 4294967296)))) 0)) [2022-01-31 12:48:19,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-01-31 12:48:19,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-31 12:48:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-31 12:48:19,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-31 12:48:19,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719730135] [2022-01-31 12:48:19,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719730135] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-31 12:48:19,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279525203] [2022-01-31 12:48:19,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 12:48:19,795 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-31 12:48:19,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 12:48:19,800 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-31 12:48:19,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process