/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/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 03:18:48,758 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 03:18:48,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 03:18:48,816 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 03:18:48,817 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 03:18:48,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 03:18:48,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 03:18:48,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 03:18:48,825 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 03:18:48,830 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 03:18:48,831 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 03:18:48,833 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 03:18:48,833 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 03:18:48,835 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 03:18:48,836 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 03:18:48,841 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 03:18:48,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 03:18:48,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 03:18:48,845 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 03:18:48,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 03:18:48,847 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 03:18:48,849 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 03:18:48,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 03:18:48,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 03:18:48,851 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 03:18:48,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 03:18:48,858 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 03:18:48,858 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 03:18:48,859 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 03:18:48,859 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 03:18:48,861 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 03:18:48,861 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 03:18:48,862 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 03:18:48,863 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 03:18:48,864 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 03:18:48,864 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 03:18:48,864 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 03:18:48,865 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 03:18:48,865 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 03:18:48,865 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 03:18:48,866 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 03:18:48,867 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 03:18:48,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 03:18:48,878 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 03:18:48,879 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 03:18:48,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 03:18:48,880 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 03:18:48,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 03:18:48,881 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 03:18:48,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 03:18:48,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 03:18:48,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 03:18:48,882 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 03:18:48,882 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 03:18:48,882 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 03:18:48,882 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 03:18:48,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 03:18:48,883 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 03:18:48,883 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 03:18:48,883 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 03:18:48,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 03:18:48,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:18:48,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 03:18:48,883 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 03:18:48,884 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 03:18:48,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 03:18:49,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 03:18:49,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 03:18:49,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 03:18:49,140 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 03:18:49,140 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 03:18:49,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2022-03-20 03:18:49,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e66b8335/8fce901673cb4a1ebfcc7a42eb42c074/FLAG16003c3f3 [2022-03-20 03:18:49,640 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 03:18:49,641 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c [2022-03-20 03:18:49,650 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e66b8335/8fce901673cb4a1ebfcc7a42eb42c074/FLAG16003c3f3 [2022-03-20 03:18:49,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6e66b8335/8fce901673cb4a1ebfcc7a42eb42c074 [2022-03-20 03:18:49,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 03:18:49,673 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 03:18:49,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 03:18:49,674 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 03:18:49,677 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 03:18:49,678 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:18:49" (1/1) ... [2022-03-20 03:18:49,679 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@676bf46b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:18:49, skipping insertion in model container [2022-03-20 03:18:49,679 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:18:49" (1/1) ... [2022-03-20 03:18:49,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 03:18:49,710 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 03:18:49,862 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/lu.cmp.c[318,331] [2022-03-20 03:18:49,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:18:49,958 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 03:18:49,968 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/lu.cmp.c[318,331] [2022-03-20 03:18:49,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:18:50,017 INFO L208 MainTranslator]: Completed translation [2022-03-20 03:18:50,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:18:50 WrapperNode [2022-03-20 03:18:50,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 03:18:50,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 03:18:50,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 03:18:50,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 03:18:50,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:18:50" (1/1) ... [2022-03-20 03:18:50,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:18:50" (1/1) ... [2022-03-20 03:18:50,053 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:18:50" (1/1) ... [2022-03-20 03:18:50,053 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:18:50" (1/1) ... [2022-03-20 03:18:50,071 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:18:50" (1/1) ... [2022-03-20 03:18:50,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:18:50" (1/1) ... [2022-03-20 03:18:50,087 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:18:50" (1/1) ... [2022-03-20 03:18:50,089 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 03:18:50,090 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 03:18:50,090 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 03:18:50,090 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 03:18:50,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:18:50" (1/1) ... [2022-03-20 03:18:50,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:18:50,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:18:50,125 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 03:18:50,133 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 03:18:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 03:18:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 03:18:50,166 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 03:18:50,167 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 03:18:50,167 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2022-03-20 03:18:50,168 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 03:18:50,168 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2022-03-20 03:18:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 03:18:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 03:18:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 03:18:50,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 03:18:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 03:18:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2022-03-20 03:18:50,169 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2022-03-20 03:18:50,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 03:18:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2022-03-20 03:18:50,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2022-03-20 03:18:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-20 03:18:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 03:18:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 03:18:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 03:18:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 03:18:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 03:18:50,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 03:18:50,257 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 03:18:50,259 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 03:18:50,535 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 03:18:50,541 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 03:18:50,541 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-03-20 03:18:50,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:18:50 BoogieIcfgContainer [2022-03-20 03:18:50,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 03:18:50,543 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 03:18:50,543 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 03:18:50,548 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 03:18:50,552 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:18:50" (1/1) ... [2022-03-20 03:18:50,554 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 03:18:50,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:18:50 BasicIcfg [2022-03-20 03:18:50,590 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 03:18:50,592 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 03:18:50,592 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 03:18:50,594 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 03:18:50,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 03:18:49" (1/4) ... [2022-03-20 03:18:50,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63510e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:18:50, skipping insertion in model container [2022-03-20 03:18:50,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:18:50" (2/4) ... [2022-03-20 03:18:50,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63510e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:18:50, skipping insertion in model container [2022-03-20 03:18:50,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:18:50" (3/4) ... [2022-03-20 03:18:50,596 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63510e8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:18:50, skipping insertion in model container [2022-03-20 03:18:50,596 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:18:50" (4/4) ... [2022-03-20 03:18:50,597 INFO L111 eAbstractionObserver]: Analyzing ICFG lu.cmp.cJordan [2022-03-20 03:18:50,604 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 03:18:50,604 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 03:18:50,652 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 03:18:50,660 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 03:18:50,660 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 03:18:50,678 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 53 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-20 03:18:50,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 03:18:50,685 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:18:50,685 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:18:50,686 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:18:50,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:18:50,691 INFO L85 PathProgramCache]: Analyzing trace with hash -708032411, now seen corresponding path program 1 times [2022-03-20 03:18:50,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:18:50,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977184925] [2022-03-20 03:18:50,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:18:50,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:18:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:50,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:18:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:50,945 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 03:18:50,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:18:50,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977184925] [2022-03-20 03:18:50,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977184925] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:18:50,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:18:50,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 03:18:50,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346036348] [2022-03-20 03:18:50,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:18:50,953 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 03:18:50,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:18:50,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 03:18:50,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 03:18:50,982 INFO L87 Difference]: Start difference. First operand has 64 states, 52 states have (on average 1.5576923076923077) internal successors, (81), 53 states have internal predecessors, (81), 5 states have call successors, (5), 5 states have call predecessors, (5), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 03:18:51,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:18:51,195 INFO L93 Difference]: Finished difference Result 89 states and 117 transitions. [2022-03-20 03:18:51,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 03:18:51,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2022-03-20 03:18:51,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:18:51,207 INFO L225 Difference]: With dead ends: 89 [2022-03-20 03:18:51,208 INFO L226 Difference]: Without dead ends: 24 [2022-03-20 03:18:51,209 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 03:18:51,214 INFO L913 BasicCegarLoop]: 70 mSDtfsCounter, 38 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-20 03:18:51,216 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 73 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-20 03:18:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-03-20 03:18:51,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2022-03-20 03:18:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 14 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:18:51,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2022-03-20 03:18:51,248 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 12 [2022-03-20 03:18:51,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:18:51,249 INFO L478 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2022-03-20 03:18:51,249 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 03:18:51,249 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2022-03-20 03:18:51,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 03:18:51,250 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:18:51,251 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:18:51,251 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 03:18:51,251 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:18:51,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:18:51,254 INFO L85 PathProgramCache]: Analyzing trace with hash -707108890, now seen corresponding path program 1 times [2022-03-20 03:18:51,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:18:51,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156029109] [2022-03-20 03:18:51,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:18:51,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:18:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:51,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:18:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:51,378 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 03:18:51,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:18:51,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156029109] [2022-03-20 03:18:51,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156029109] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:18:51,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:18:51,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-20 03:18:51,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953728996] [2022-03-20 03:18:51,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:18:51,381 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-20 03:18:51,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:18:51,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-20 03:18:51,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-03-20 03:18:51,382 INFO L87 Difference]: Start difference. First operand 20 states and 22 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), 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 03:18:51,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:18:51,491 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2022-03-20 03:18:51,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 03:18:51,492 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), 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 12 [2022-03-20 03:18:51,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:18:51,493 INFO L225 Difference]: With dead ends: 26 [2022-03-20 03:18:51,493 INFO L226 Difference]: Without dead ends: 26 [2022-03-20 03:18:51,495 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-03-20 03:18:51,497 INFO L913 BasicCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:18:51,499 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 25 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 03:18:51,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2022-03-20 03:18:51,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 21. [2022-03-20 03:18:51,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 15 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:18:51,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2022-03-20 03:18:51,510 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 12 [2022-03-20 03:18:51,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:18:51,516 INFO L478 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2022-03-20 03:18:51,516 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), 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 03:18:51,516 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2022-03-20 03:18:51,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-03-20 03:18:51,517 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:18:51,517 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:18:51,517 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 03:18:51,517 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:18:51,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:18:51,518 INFO L85 PathProgramCache]: Analyzing trace with hash -740655430, now seen corresponding path program 1 times [2022-03-20 03:18:51,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:18:51,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031156657] [2022-03-20 03:18:51,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:18:51,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:18:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:51,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:18:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:51,678 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 03:18:51,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:18:51,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031156657] [2022-03-20 03:18:51,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031156657] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:18:51,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:18:51,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 03:18:51,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595429687] [2022-03-20 03:18:51,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:18:51,682 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 03:18:51,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:18:51,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 03:18:51,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 03:18:51,683 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 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 03:18:51,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:18:51,837 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-03-20 03:18:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 03:18:51,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 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 16 [2022-03-20 03:18:51,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:18:51,839 INFO L225 Difference]: With dead ends: 34 [2022-03-20 03:18:51,839 INFO L226 Difference]: Without dead ends: 34 [2022-03-20 03:18:51,840 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-20 03:18:51,843 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:18:51,844 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 38 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 03:18:51,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-20 03:18:51,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2022-03-20 03:18:51,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 03:18:51,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-03-20 03:18:51,853 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 16 [2022-03-20 03:18:51,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:18:51,854 INFO L478 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-03-20 03:18:51,854 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.0) internal successors, (12), 4 states have internal predecessors, (12), 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 03:18:51,854 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-03-20 03:18:51,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 03:18:51,856 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:18:51,856 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:18:51,856 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 03:18:51,856 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:18:51,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:18:51,857 INFO L85 PathProgramCache]: Analyzing trace with hash 213602113, now seen corresponding path program 1 times [2022-03-20 03:18:51,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:18:51,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931527337] [2022-03-20 03:18:51,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:18:51,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:18:51,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:51,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:18:51,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:51,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 03:18:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:51,987 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 03:18:51,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:18:51,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931527337] [2022-03-20 03:18:51,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931527337] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:18:51,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727203173] [2022-03-20 03:18:51,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:18:51,988 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:18:51,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:18:51,990 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 03:18:52,023 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 03:18:52,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:52,091 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 4 conjunts are in the unsatisfiable core [2022-03-20 03:18:52,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:18:52,243 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 03:18:52,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:18:52,341 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-03-20 03:18:52,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1727203173] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:18:52,342 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:18:52,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 13 [2022-03-20 03:18:52,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358191103] [2022-03-20 03:18:52,342 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:18:52,345 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-03-20 03:18:52,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:18:52,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-03-20 03:18:52,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-03-20 03:18:52,348 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 03:18:52,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:18:52,756 INFO L93 Difference]: Finished difference Result 83 states and 98 transitions. [2022-03-20 03:18:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-03-20 03:18:52,757 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 29 [2022-03-20 03:18:52,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:18:52,758 INFO L225 Difference]: With dead ends: 83 [2022-03-20 03:18:52,759 INFO L226 Difference]: Without dead ends: 83 [2022-03-20 03:18:52,759 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2022-03-20 03:18:52,760 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 138 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 139 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:18:52,760 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [139 Valid, 54 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 03:18:52,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2022-03-20 03:18:52,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 81. [2022-03-20 03:18:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 71 states have (on average 1.2253521126760563) internal successors, (87), 72 states have internal predecessors, (87), 5 states have call successors, (5), 5 states have call predecessors, (5), 4 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-20 03:18:52,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 96 transitions. [2022-03-20 03:18:52,768 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 96 transitions. Word has length 29 [2022-03-20 03:18:52,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:18:52,768 INFO L478 AbstractCegarLoop]: Abstraction has 81 states and 96 transitions. [2022-03-20 03:18:52,769 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 11 states have internal predecessors, (50), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 03:18:52,769 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 96 transitions. [2022-03-20 03:18:52,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-03-20 03:18:52,770 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:18:52,771 INFO L499 BasicCegarLoop]: trace histogram [12, 12, 12, 7, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:18:52,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-20 03:18:52,987 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:18:52,988 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:18:52,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:18:52,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1801298995, now seen corresponding path program 1 times [2022-03-20 03:18:52,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:18:52,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413895253] [2022-03-20 03:18:52,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:18:52,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:18:53,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:53,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:18:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:53,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-03-20 03:18:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:53,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-03-20 03:18:53,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 167 trivial. 0 not checked. [2022-03-20 03:18:53,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:18:53,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413895253] [2022-03-20 03:18:53,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413895253] provided 0 perfect and 1 imperfect interpolant sequences [2022-03-20 03:18:53,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2025421841] [2022-03-20 03:18:53,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:18:53,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:18:53,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:18:53,159 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) [2022-03-20 03:18:53,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-20 03:18:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:18:53,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 7 conjunts are in the unsatisfiable core [2022-03-20 03:18:53,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-20 03:18:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 148 proven. 28 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-03-20 03:18:53,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-20 03:18:53,735 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 152 proven. 28 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-03-20 03:18:53,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2025421841] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-20 03:18:53,736 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-03-20 03:18:53,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-03-20 03:18:53,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879215522] [2022-03-20 03:18:53,736 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-03-20 03:18:53,738 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-03-20 03:18:53,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:18:53,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-03-20 03:18:53,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2022-03-20 03:18:53,739 INFO L87 Difference]: Start difference. First operand 81 states and 96 transitions. Second operand has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 03:18:54,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:18:54,046 INFO L93 Difference]: Finished difference Result 170 states and 201 transitions. [2022-03-20 03:18:54,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-03-20 03:18:54,046 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 78 [2022-03-20 03:18:54,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:18:54,047 INFO L225 Difference]: With dead ends: 170 [2022-03-20 03:18:54,047 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 03:18:54,049 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=228, Invalid=642, Unknown=0, NotChecked=0, Total=870 [2022-03-20 03:18:54,050 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 102 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 03:18:54,050 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 52 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 03:18:54,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 03:18:54,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 03:18:54,052 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 03:18:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 03:18:54,052 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 78 [2022-03-20 03:18:54,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:18:54,052 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 03:18:54,052 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.052631578947368) internal successors, (77), 18 states have internal predecessors, (77), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-03-20 03:18:54,052 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 03:18:54,053 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 03:18:54,055 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 03:18:54,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-20 03:18:54,275 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-20 03:18:54,278 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-03-20 03:18:54,280 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 03:18:54,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:18:54 BasicIcfg [2022-03-20 03:18:54,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 03:18:54,282 INFO L158 Benchmark]: Toolchain (without parser) took 4609.90ms. Allocated memory was 188.7MB in the beginning and 270.5MB in the end (delta: 81.8MB). Free memory was 131.5MB in the beginning and 236.3MB in the end (delta: -104.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:18:54,283 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 148.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:18:54,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.54ms. Allocated memory was 188.7MB in the beginning and 270.5MB in the end (delta: 81.8MB). Free memory was 131.4MB in the beginning and 240.3MB in the end (delta: -109.0MB). Peak memory consumption was 15.8MB. Max. memory is 8.0GB. [2022-03-20 03:18:54,283 INFO L158 Benchmark]: Boogie Preprocessor took 69.86ms. Allocated memory is still 270.5MB. Free memory was 240.3MB in the beginning and 238.0MB in the end (delta: 2.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-03-20 03:18:54,283 INFO L158 Benchmark]: RCFGBuilder took 452.79ms. Allocated memory is still 270.5MB. Free memory was 238.0MB in the beginning and 221.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-03-20 03:18:54,284 INFO L158 Benchmark]: IcfgTransformer took 46.98ms. Allocated memory is still 270.5MB. Free memory was 221.2MB in the beginning and 219.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 03:18:54,284 INFO L158 Benchmark]: TraceAbstraction took 3690.20ms. Allocated memory is still 270.5MB. Free memory was 218.8MB in the beginning and 236.3MB in the end (delta: -17.5MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:18:54,285 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 188.7MB. Free memory is still 148.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 344.54ms. Allocated memory was 188.7MB in the beginning and 270.5MB in the end (delta: 81.8MB). Free memory was 131.4MB in the beginning and 240.3MB in the end (delta: -109.0MB). Peak memory consumption was 15.8MB. Max. memory is 8.0GB. * Boogie Preprocessor took 69.86ms. Allocated memory is still 270.5MB. Free memory was 240.3MB in the beginning and 238.0MB in the end (delta: 2.3MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * RCFGBuilder took 452.79ms. Allocated memory is still 270.5MB. Free memory was 238.0MB in the beginning and 221.2MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * IcfgTransformer took 46.98ms. Allocated memory is still 270.5MB. Free memory was 221.2MB in the beginning and 219.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * TraceAbstraction took 3690.20ms. Allocated memory is still 270.5MB. Free memory was 218.8MB in the beginning and 236.3MB in the end (delta: -17.5MB). There was no memory consumed. 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 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 12, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 326 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 320 mSDsluCounter, 242 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 125 mSDsCounter, 110 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 396 IncrementalHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 110 mSolverCounterUnsat, 117 mSDtfsCounter, 396 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 287 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=4, InterpolantAutomatonStates: 56, 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, 5 MinimizatonAttempts, 13 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 254 NumberOfCodeBlocks, 254 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 352 ConstructedInterpolants, 0 QuantifiedInterpolants, 1097 SizeOfPredicates, 4 NumberOfNonLiveVariables, 564 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 928/997 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 03:18:54,325 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...