/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_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 03:34:11,065 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 03:34:11,067 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 03:34:11,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 03:34:11,097 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 03:34:11,098 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 03:34:11,099 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 03:34:11,107 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 03:34:11,109 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 03:34:11,116 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 03:34:11,116 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 03:34:11,117 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 03:34:11,117 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 03:34:11,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 03:34:11,118 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 03:34:11,119 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 03:34:11,119 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 03:34:11,120 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 03:34:11,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 03:34:11,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 03:34:11,122 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 03:34:11,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 03:34:11,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 03:34:11,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 03:34:11,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 03:34:11,126 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 03:34:11,127 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 03:34:11,127 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 03:34:11,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 03:34:11,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 03:34:11,128 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 03:34:11,128 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 03:34:11,129 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 03:34:11,129 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 03:34:11,129 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 03:34:11,130 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 03:34:11,130 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 03:34:11,131 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 03:34:11,131 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 03:34:11,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 03:34:11,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 03:34:11,132 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 03:34:11,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 03:34:11,138 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 03:34:11,138 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 03:34:11,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 03:34:11,139 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 03:34:11,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 03:34:11,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 03:34:11,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 03:34:11,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 03:34:11,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 03:34:11,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 03:34:11,140 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 03:34:11,140 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 03:34:11,140 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 03:34:11,140 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 03:34:11,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 03:34:11,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 03:34:11,140 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 03:34:11,141 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 03:34:11,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:34:11,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 03:34:11,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 03:34:11,141 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 03:34:11,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 03:34:11,329 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 03:34:11,348 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 03:34:11,352 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 03:34:11,352 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 03:34:11,353 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 03:34:11,355 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_1-2.c [2022-03-20 03:34:11,409 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd09b68e4/c260b7ab40774d7abd640e691f9be13a/FLAGd22cc559f [2022-03-20 03:34:11,781 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 03:34:11,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_1-2.c [2022-03-20 03:34:11,785 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd09b68e4/c260b7ab40774d7abd640e691f9be13a/FLAGd22cc559f [2022-03-20 03:34:11,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fd09b68e4/c260b7ab40774d7abd640e691f9be13a [2022-03-20 03:34:11,804 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 03:34:11,806 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 03:34:11,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 03:34:11,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 03:34:11,811 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 03:34:11,812 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:34:11" (1/1) ... [2022-03-20 03:34:11,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b8f3d68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:11, skipping insertion in model container [2022-03-20 03:34:11,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:34:11" (1/1) ... [2022-03-20 03:34:11,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 03:34:11,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 03:34:11,958 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_1-2.c[322,335] [2022-03-20 03:34:11,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:34:11,969 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 03:34:11,977 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_1-2.c[322,335] [2022-03-20 03:34:11,979 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:34:11,988 INFO L208 MainTranslator]: Completed translation [2022-03-20 03:34:11,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:11 WrapperNode [2022-03-20 03:34:11,989 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 03:34:11,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 03:34:11,990 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 03:34:11,990 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 03:34:11,997 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:11" (1/1) ... [2022-03-20 03:34:11,997 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:11" (1/1) ... [2022-03-20 03:34:12,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:11" (1/1) ... [2022-03-20 03:34:12,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:11" (1/1) ... [2022-03-20 03:34:12,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:11" (1/1) ... [2022-03-20 03:34:12,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:11" (1/1) ... [2022-03-20 03:34:12,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:11" (1/1) ... [2022-03-20 03:34:12,008 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 03:34:12,009 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 03:34:12,009 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 03:34:12,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 03:34:12,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:11" (1/1) ... [2022-03-20 03:34:12,015 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:34:12,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:34:12,032 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 03:34:12,046 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 03:34:12,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 03:34:12,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 03:34:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 03:34:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 03:34:12,063 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 03:34:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 03:34:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 03:34:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 03:34:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 03:34:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 03:34:12,063 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 03:34:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 03:34:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 03:34:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 03:34:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 03:34:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 03:34:12,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 03:34:12,107 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 03:34:12,108 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 03:34:12,170 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 03:34:12,174 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 03:34:12,174 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 03:34:12,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:12 BoogieIcfgContainer [2022-03-20 03:34:12,176 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 03:34:12,176 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 03:34:12,176 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 03:34:12,179 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 03:34:12,182 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:12" (1/1) ... [2022-03-20 03:34:12,183 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 03:34:12,328 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 03:34:12,329 INFO L91 elerationTransformer]: Accelerated Formula: (and (< (mod v_main_~x~0_2 4294967296) 268435455) (= v_main_~x~0_1 (+ v_main_~x~0_2 2))) 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 (<= 268435455 .cse0) (= v_main_~x~0_2 v_main_~x~0_1)) (and (< .cse0 268435455) (= (mod (+ v_main_~x~0_2 v_main_~x~0_1) 2) 0) (forall ((v_it_1 Int)) (or (not (<= (+ v_it_1 1) (div (+ v_main_~x~0_2 (* (- 1) v_main_~x~0_1)) (- 2)))) (not (<= 1 v_it_1)) (< (mod (+ (* v_it_1 2) v_main_~x~0_2) 4294967296) 268435455))) (< 0 (div (+ v_main_~x~0_2 (* (- 1) v_main_~x~0_1)) (- 2)))))) 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 03:34:12,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:34:12 BasicIcfg [2022-03-20 03:34:12,333 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 03:34:12,334 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 03:34:12,334 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 03:34:12,337 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 03:34:12,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 03:34:11" (1/4) ... [2022-03-20 03:34:12,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b28234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:34:12, skipping insertion in model container [2022-03-20 03:34:12,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:11" (2/4) ... [2022-03-20 03:34:12,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b28234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:34:12, skipping insertion in model container [2022-03-20 03:34:12,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:12" (3/4) ... [2022-03-20 03:34:12,338 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71b28234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:34:12, skipping insertion in model container [2022-03-20 03:34:12,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:34:12" (4/4) ... [2022-03-20 03:34:12,339 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_1-2.cJordan [2022-03-20 03:34:12,344 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 03:34:12,344 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 03:34:12,394 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 03:34:12,407 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 03:34:12,407 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 03:34:12,416 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 03:34:12,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 03:34:12,427 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:12,428 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:12,428 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:12,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:12,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2022-03-20 03:34:12,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:12,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448631223] [2022-03-20 03:34:12,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:12,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:12,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:12,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:34:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:12,594 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 03:34:12,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:34:12,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448631223] [2022-03-20 03:34:12,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448631223] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:34:12,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:34:12,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 03:34:12,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032717086] [2022-03-20 03:34:12,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:34:12,603 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 03:34:12,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:34:12,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 03:34:12,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 03:34:12,631 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 03:34:12,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:34:12,671 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-03-20 03:34:12,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 03:34:12,678 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 03:34:12,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:34:12,684 INFO L225 Difference]: With dead ends: 18 [2022-03-20 03:34:12,684 INFO L226 Difference]: Without dead ends: 12 [2022-03-20 03:34:12,685 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 03:34:12,692 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 03:34:12,693 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 03:34:12,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-03-20 03:34:12,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-03-20 03:34:12,716 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 03:34:12,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-03-20 03:34:12,718 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-03-20 03:34:12,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:34:12,719 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-03-20 03:34:12,719 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 03:34:12,719 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-03-20 03:34:12,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 03:34:12,720 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:12,720 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:12,720 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 03:34:12,720 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:12,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:12,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2022-03-20 03:34:12,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:12,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507358591] [2022-03-20 03:34:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:12,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:12,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:12,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:34:12,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:12,846 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 03:34:12,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:34:12,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507358591] [2022-03-20 03:34:12,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507358591] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:34:12,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:34:12,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 03:34:12,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035879378] [2022-03-20 03:34:12,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:34:12,851 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 03:34:12,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:34:12,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 03:34:12,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 03:34:12,852 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 03:34:12,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:34:12,882 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-03-20 03:34:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 03:34:12,883 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 03:34:12,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:34:12,883 INFO L225 Difference]: With dead ends: 13 [2022-03-20 03:34:12,883 INFO L226 Difference]: Without dead ends: 13 [2022-03-20 03:34:12,883 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 03:34:12,884 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 03:34:12,885 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 03:34:12,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-20 03:34:12,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-20 03:34:12,887 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 03:34:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-20 03:34:12,887 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2022-03-20 03:34:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:34:12,888 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-20 03:34:12,888 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 03:34:12,888 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-20 03:34:12,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 03:34:12,888 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:12,888 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:12,889 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 03:34:12,889 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:12,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:12,889 INFO L85 PathProgramCache]: Analyzing trace with hash -814146699, now seen corresponding path program 1 times [2022-03-20 03:34:12,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:12,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312682121] [2022-03-20 03:34:12,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:12,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:12,903 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_1.0) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_1.0) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-03-20 03:34:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:12,957 WARN L250 erpolLogProxyWrapper]: Quant: Clause contains literal that is not almost uninterpreted: (not (<= (+ (* (- 2) .v_it_1.1) (* (- 1) main_~x~0_5) (* 4294967296 (div (+ (* 2 .v_it_1.1) main_~x~0_5) 4294967296)) 268435455) 0)) [2022-03-20 03:34:13,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:34:13,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:34:13,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:34:13,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312682121] [2022-03-20 03:34:13,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312682121] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:34:13,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340198258] [2022-03-20 03:34:13,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:13,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:34:13,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:34:13,032 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 03:34:13,067 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 03:34:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:13,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 6 conjunts are in the unsatisfiable core [2022-03-20 03:34:13,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:34:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:34:13,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:34:13,697 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-03-20 03:34:13,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340198258] provided 1 perfect and 1 imperfect interpolant sequences [2022-03-20 03:34:13,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-03-20 03:34:13,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 6] total 10 [2022-03-20 03:34:13,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398368214] [2022-03-20 03:34:13,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:34:13,698 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 03:34:13,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:34:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 03:34:13,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-03-20 03:34:13,699 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 03:34:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:34:13,710 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2022-03-20 03:34:13,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 03:34:13,710 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-20 03:34:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:34:13,710 INFO L225 Difference]: With dead ends: 11 [2022-03-20 03:34:13,710 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 03:34:13,712 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-03-20 03:34:13,713 INFO L913 BasicCegarLoop]: 7 mSDtfsCounter, 1 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 03:34:13,715 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 1 Unchecked, 0.0s Time] [2022-03-20 03:34:13,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 03:34:13,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 03:34:13,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 03:34:13,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 03:34:13,717 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-03-20 03:34:13,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:34:13,717 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 03:34:13,717 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 2 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 03:34:13,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 03:34:13,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 03:34:13,719 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 03:34:13,737 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-03-20 03:34:13,935 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 03:34:13,937 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-20 03:34:13,938 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 03:34:13,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:34:13 BasicIcfg [2022-03-20 03:34:13,941 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 03:34:13,941 INFO L158 Benchmark]: Toolchain (without parser) took 2135.53ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 129.5MB in the beginning and 219.5MB in the end (delta: -90.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:34:13,941 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 186.6MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:34:13,942 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.22ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 129.3MB in the beginning and 241.6MB in the end (delta: -112.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-20 03:34:13,942 INFO L158 Benchmark]: Boogie Preprocessor took 18.69ms. Allocated memory is still 270.5MB. Free memory was 241.6MB in the beginning and 240.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 03:34:13,942 INFO L158 Benchmark]: RCFGBuilder took 166.94ms. Allocated memory is still 270.5MB. Free memory was 240.1MB in the beginning and 230.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-20 03:34:13,942 INFO L158 Benchmark]: IcfgTransformer took 156.95ms. Allocated memory is still 270.5MB. Free memory was 230.7MB in the beginning and 222.8MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. [2022-03-20 03:34:13,943 INFO L158 Benchmark]: TraceAbstraction took 1606.38ms. Allocated memory is still 270.5MB. Free memory was 222.3MB in the beginning and 219.5MB in the end (delta: 2.7MB). Peak memory consumption was 4.1MB. Max. memory is 8.0GB. [2022-03-20 03:34:13,944 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 0.10ms. Allocated memory is still 186.6MB. Free memory is still 145.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.22ms. Allocated memory was 186.6MB in the beginning and 270.5MB in the end (delta: 83.9MB). Free memory was 129.3MB in the beginning and 241.6MB in the end (delta: -112.3MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 18.69ms. Allocated memory is still 270.5MB. Free memory was 241.6MB in the beginning and 240.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 166.94ms. Allocated memory is still 270.5MB. Free memory was 240.1MB in the beginning and 230.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 156.95ms. Allocated memory is still 270.5MB. Free memory was 230.7MB in the beginning and 222.8MB in the end (delta: 7.9MB). Peak memory consumption was 8.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1606.38ms. Allocated memory is still 270.5MB. Free memory was 222.3MB in the beginning and 219.5MB in the end (delta: 2.7MB). Peak memory consumption was 4.1MB. 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 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, 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, 15 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14 mSDsluCounter, 64 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 29 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 14 IncrementalHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 35 mSDtfsCounter, 14 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 27 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 12, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 46 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 53 ConstructedInterpolants, 2 QuantifiedInterpolants, 191 SizeOfPredicates, 1 NumberOfNonLiveVariables, 52 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 1/3 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-20 03:34:13,959 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...