./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3a877d22 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a2fc902d06a9677a744e95b3e4aa2d9ade69a1fc168c97563c1ba760b1699777 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 08:33:09,060 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 08:33:09,062 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 08:33:09,084 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 08:33:09,084 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 08:33:09,087 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 08:33:09,088 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 08:33:09,092 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 08:33:09,094 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 08:33:09,097 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 08:33:09,098 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 08:33:09,099 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 08:33:09,099 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 08:33:09,101 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 08:33:09,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 08:33:09,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 08:33:09,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 08:33:09,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 08:33:09,110 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 08:33:09,115 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 08:33:09,116 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 08:33:09,117 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 08:33:09,118 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 08:33:09,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 08:33:09,122 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 08:33:09,123 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 08:33:09,123 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 08:33:09,124 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 08:33:09,124 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 08:33:09,125 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 08:33:09,125 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 08:33:09,126 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 08:33:09,127 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 08:33:09,128 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 08:33:09,129 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 08:33:09,129 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 08:33:09,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 08:33:09,129 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 08:33:09,129 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 08:33:09,131 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 08:33:09,131 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 08:33:09,132 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-15 08:33:09,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 08:33:09,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 08:33:09,153 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 08:33:09,153 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 08:33:09,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 08:33:09,154 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 08:33:09,155 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 08:33:09,155 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 08:33:09,155 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 08:33:09,155 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 08:33:09,155 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 08:33:09,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 08:33:09,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 08:33:09,156 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 08:33:09,156 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 08:33:09,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 08:33:09,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 08:33:09,156 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 08:33:09,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 08:33:09,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 08:33:09,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 08:33:09,157 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 08:33:09,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 08:33:09,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 08:33:09,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:33:09,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 08:33:09,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 08:33:09,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 08:33:09,158 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 08:33:09,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 08:33:09,158 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-15 08:33:09,158 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-15 08:33:09,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 08:33:09,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 08:33:09,158 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a2fc902d06a9677a744e95b3e4aa2d9ade69a1fc168c97563c1ba760b1699777 [2021-12-15 08:33:09,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 08:33:09,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 08:33:09,377 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 08:33:09,378 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 08:33:09,379 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 08:33:09,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i [2021-12-15 08:33:09,428 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/698bbebf9/1e679c35685e4abdb052c7bfeb090f63/FLAGd618b0fae [2021-12-15 08:33:09,786 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 08:33:09,787 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i [2021-12-15 08:33:09,792 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/698bbebf9/1e679c35685e4abdb052c7bfeb090f63/FLAGd618b0fae [2021-12-15 08:33:09,801 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/698bbebf9/1e679c35685e4abdb052c7bfeb090f63 [2021-12-15 08:33:09,803 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 08:33:09,804 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 08:33:09,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 08:33:09,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 08:33:09,808 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 08:33:09,808 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:09,809 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e994cfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09, skipping insertion in model container [2021-12-15 08:33:09,818 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:09,822 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 08:33:09,831 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 08:33:09,931 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i[821,834] [2021-12-15 08:33:09,942 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:33:09,947 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 08:33:09,954 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_minInArray_ground-2.i[821,834] [2021-12-15 08:33:09,958 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 08:33:09,966 INFO L208 MainTranslator]: Completed translation [2021-12-15 08:33:09,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09 WrapperNode [2021-12-15 08:33:09,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 08:33:09,968 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 08:33:09,968 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 08:33:09,968 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 08:33:09,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:09,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:09,988 INFO L137 Inliner]: procedures = 16, calls = 14, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 59 [2021-12-15 08:33:09,989 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 08:33:09,989 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 08:33:09,989 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 08:33:09,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 08:33:09,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:09,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:09,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:09,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:09,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:10,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:10,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:10,002 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 08:33:10,003 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 08:33:10,003 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 08:33:10,003 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 08:33:10,004 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09" (1/1) ... [2021-12-15 08:33:10,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 08:33:10,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:33:10,027 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) [2021-12-15 08:33:10,029 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 [2021-12-15 08:33:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 08:33:10,051 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 08:33:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-15 08:33:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-15 08:33:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 08:33:10,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 08:33:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-15 08:33:10,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-15 08:33:10,098 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 08:33:10,099 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 08:33:10,235 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 08:33:10,240 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 08:33:10,240 INFO L301 CfgBuilder]: Removed 3 assume(true) statements. [2021-12-15 08:33:10,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:33:10 BoogieIcfgContainer [2021-12-15 08:33:10,259 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 08:33:10,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 08:33:10,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 08:33:10,263 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 08:33:10,263 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 08:33:09" (1/3) ... [2021-12-15 08:33:10,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7bc127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:33:10, skipping insertion in model container [2021-12-15 08:33:10,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 08:33:09" (2/3) ... [2021-12-15 08:33:10,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c7bc127 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 08:33:10, skipping insertion in model container [2021-12-15 08:33:10,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 08:33:10" (3/3) ... [2021-12-15 08:33:10,265 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_minInArray_ground-2.i [2021-12-15 08:33:10,269 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 08:33:10,269 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-15 08:33:10,321 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 08:33:10,326 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-15 08:33:10,326 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-15 08:33:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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) [2021-12-15 08:33:10,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-15 08:33:10,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:33:10,371 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:33:10,371 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:33:10,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:33:10,375 INFO L85 PathProgramCache]: Analyzing trace with hash -2005182879, now seen corresponding path program 1 times [2021-12-15 08:33:10,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:33:10,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061802718] [2021-12-15 08:33:10,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:33:10,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:33:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:33:10,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 08:33:10,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:33:10,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061802718] [2021-12-15 08:33:10,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061802718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 08:33:10,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 08:33:10,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 08:33:10,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938262688] [2021-12-15 08:33:10,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 08:33:10,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 08:33:10,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:33:10,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 08:33:10,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:33:10,549 INFO L87 Difference]: Start difference. First operand has 19 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 18 states have internal predecessors, (26), 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) Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-15 08:33:10,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:33:10,586 INFO L93 Difference]: Finished difference Result 39 states and 56 transitions. [2021-12-15 08:33:10,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 08:33:10,589 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) Word has length 9 [2021-12-15 08:33:10,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:33:10,593 INFO L225 Difference]: With dead ends: 39 [2021-12-15 08:33:10,594 INFO L226 Difference]: Without dead ends: 20 [2021-12-15 08:33:10,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 08:33:10,598 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:33:10,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 30 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:33:10,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-15 08:33:10,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 17. [2021-12-15 08:33:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.25) internal successors, (20), 16 states have internal predecessors, (20), 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) [2021-12-15 08:33:10,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2021-12-15 08:33:10,620 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 9 [2021-12-15 08:33:10,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:33:10,621 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2021-12-15 08:33:10,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 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) [2021-12-15 08:33:10,621 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2021-12-15 08:33:10,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-15 08:33:10,622 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:33:10,622 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:33:10,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 08:33:10,622 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:33:10,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:33:10,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1959207727, now seen corresponding path program 1 times [2021-12-15 08:33:10,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:33:10,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271586229] [2021-12-15 08:33:10,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:33:10,624 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:33:10,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:33:10,654 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:33:10,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:33:10,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271586229] [2021-12-15 08:33:10,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271586229] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:33:10,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659203053] [2021-12-15 08:33:10,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:33:10,656 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:33:10,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:33:10,657 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) [2021-12-15 08:33:10,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-15 08:33:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:33:10,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 08:33:10,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:33:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:33:10,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:33:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-15 08:33:10,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659203053] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:33:10,820 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:33:10,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-15 08:33:10,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452216811] [2021-12-15 08:33:10,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:33:10,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-15 08:33:10,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:33:10,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-15 08:33:10,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-15 08:33:10,824 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-12-15 08:33:10,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:33:10,890 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2021-12-15 08:33:10,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 08:33:10,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) Word has length 14 [2021-12-15 08:33:10,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:33:10,895 INFO L225 Difference]: With dead ends: 44 [2021-12-15 08:33:10,895 INFO L226 Difference]: Without dead ends: 32 [2021-12-15 08:33:10,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-15 08:33:10,897 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 08:33:10,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 25 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 08:33:10,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-15 08:33:10,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2021-12-15 08:33:10,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 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) [2021-12-15 08:33:10,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2021-12-15 08:33:10,909 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 14 [2021-12-15 08:33:10,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:33:10,910 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2021-12-15 08:33:10,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 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) [2021-12-15 08:33:10,910 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2021-12-15 08:33:10,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-15 08:33:10,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:33:10,911 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:33:10,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-15 08:33:11,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:33:11,128 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:33:11,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:33:11,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1208394382, now seen corresponding path program 2 times [2021-12-15 08:33:11,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:33:11,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040819757] [2021-12-15 08:33:11,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:33:11,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:33:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:33:11,235 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-15 08:33:11,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:33:11,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040819757] [2021-12-15 08:33:11,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040819757] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:33:11,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350204446] [2021-12-15 08:33:11,238 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 08:33:11,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:33:11,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:33:11,239 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) [2021-12-15 08:33:11,242 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-15 08:33:11,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 08:33:11,308 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:33:11,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 08:33:11,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:33:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-15 08:33:11,370 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:33:11,459 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-15 08:33:11,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350204446] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:33:11,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:33:11,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-15 08:33:11,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415847531] [2021-12-15 08:33:11,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:33:11,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-15 08:33:11,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:33:11,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-15 08:33:11,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-15 08:33:11,462 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-12-15 08:33:11,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:33:11,530 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2021-12-15 08:33:11,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 08:33:11,530 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) Word has length 29 [2021-12-15 08:33:11,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:33:11,531 INFO L225 Difference]: With dead ends: 83 [2021-12-15 08:33:11,531 INFO L226 Difference]: Without dead ends: 62 [2021-12-15 08:33:11,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-15 08:33:11,532 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 75 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:33:11,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 47 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 08:33:11,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-12-15 08:33:11,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2021-12-15 08:33:11,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 61 states have (on average 1.2131147540983607) internal successors, (74), 61 states have internal predecessors, (74), 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) [2021-12-15 08:33:11,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2021-12-15 08:33:11,538 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 29 [2021-12-15 08:33:11,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:33:11,538 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2021-12-15 08:33:11,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 13 states have internal predecessors, (33), 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) [2021-12-15 08:33:11,539 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2021-12-15 08:33:11,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-12-15 08:33:11,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:33:11,540 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:33:11,565 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-15 08:33:11,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-15 08:33:11,755 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:33:11,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:33:11,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1285339298, now seen corresponding path program 3 times [2021-12-15 08:33:11,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:33:11,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906843379] [2021-12-15 08:33:11,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:33:11,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:33:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:33:11,927 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-15 08:33:11,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:33:11,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906843379] [2021-12-15 08:33:11,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906843379] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:33:11,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003549791] [2021-12-15 08:33:11,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 08:33:11,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:33:11,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:33:11,930 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:33:11,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-15 08:33:12,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-15 08:33:12,022 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:33:12,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-15 08:33:12,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:33:12,133 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-15 08:33:12,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:33:12,377 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2021-12-15 08:33:12,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003549791] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:33:12,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:33:12,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2021-12-15 08:33:12,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369590679] [2021-12-15 08:33:12,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:33:12,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-15 08:33:12,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:33:12,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-15 08:33:12,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-15 08:33:12,380 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 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) [2021-12-15 08:33:12,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:33:12,538 INFO L93 Difference]: Finished difference Result 161 states and 220 transitions. [2021-12-15 08:33:12,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 08:33:12,539 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 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) Word has length 59 [2021-12-15 08:33:12,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:33:12,540 INFO L225 Difference]: With dead ends: 161 [2021-12-15 08:33:12,540 INFO L226 Difference]: Without dead ends: 122 [2021-12-15 08:33:12,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2021-12-15 08:33:12,541 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 155 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 08:33:12,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [155 Valid, 83 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 08:33:12,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-15 08:33:12,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2021-12-15 08:33:12,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 121 states have (on average 1.2066115702479339) internal successors, (146), 121 states have internal predecessors, (146), 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) [2021-12-15 08:33:12,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 146 transitions. [2021-12-15 08:33:12,548 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 146 transitions. Word has length 59 [2021-12-15 08:33:12,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:33:12,548 INFO L470 AbstractCegarLoop]: Abstraction has 122 states and 146 transitions. [2021-12-15 08:33:12,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 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) [2021-12-15 08:33:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 146 transitions. [2021-12-15 08:33:12,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-12-15 08:33:12,551 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:33:12,551 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:33:12,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-15 08:33:12,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:33:12,768 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:33:12,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:33:12,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1971297078, now seen corresponding path program 4 times [2021-12-15 08:33:12,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:33:12,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517671632] [2021-12-15 08:33:12,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:33:12,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:33:12,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:33:13,055 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-12-15 08:33:13,055 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:33:13,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517671632] [2021-12-15 08:33:13,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517671632] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:33:13,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1652542877] [2021-12-15 08:33:13,056 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-15 08:33:13,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:33:13,056 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:33:13,057 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:33:13,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-15 08:33:13,150 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-15 08:33:13,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 08:33:13,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-15 08:33:13,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 08:33:13,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-12-15 08:33:13,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 08:33:14,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 715 trivial. 0 not checked. [2021-12-15 08:33:14,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1652542877] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 08:33:14,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 08:33:14,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2021-12-15 08:33:14,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071380310] [2021-12-15 08:33:14,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 08:33:14,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-15 08:33:14,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 08:33:14,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-15 08:33:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-12-15 08:33:14,014 INFO L87 Difference]: Start difference. First operand 122 states and 146 transitions. Second operand has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 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) [2021-12-15 08:33:14,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 08:33:14,336 INFO L93 Difference]: Finished difference Result 317 states and 436 transitions. [2021-12-15 08:33:14,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-15 08:33:14,336 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 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) Word has length 119 [2021-12-15 08:33:14,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 08:33:14,337 INFO L225 Difference]: With dead ends: 317 [2021-12-15 08:33:14,337 INFO L226 Difference]: Without dead ends: 242 [2021-12-15 08:33:14,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2021-12-15 08:33:14,341 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 534 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 08:33:14,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [534 Valid, 75 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [208 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 08:33:14,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-12-15 08:33:14,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2021-12-15 08:33:14,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 241 states have (on average 1.2033195020746887) internal successors, (290), 241 states have internal predecessors, (290), 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) [2021-12-15 08:33:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 290 transitions. [2021-12-15 08:33:14,351 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 290 transitions. Word has length 119 [2021-12-15 08:33:14,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 08:33:14,351 INFO L470 AbstractCegarLoop]: Abstraction has 242 states and 290 transitions. [2021-12-15 08:33:14,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.142857142857143) internal successors, (105), 49 states have internal predecessors, (105), 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) [2021-12-15 08:33:14,351 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 290 transitions. [2021-12-15 08:33:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2021-12-15 08:33:14,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 08:33:14,353 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 08:33:14,369 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-15 08:33:14,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:33:14,567 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-15 08:33:14,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 08:33:14,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1676624614, now seen corresponding path program 5 times [2021-12-15 08:33:14,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 08:33:14,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133681894] [2021-12-15 08:33:14,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 08:33:14,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 08:33:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 08:33:15,438 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 3151 trivial. 0 not checked. [2021-12-15 08:33:15,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 08:33:15,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133681894] [2021-12-15 08:33:15,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133681894] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 08:33:15,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492132655] [2021-12-15 08:33:15,439 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-15 08:33:15,439 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 08:33:15,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 08:33:15,440 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 08:33:15,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process