./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/loop-zilu/benchmark13_conjunctive.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows 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/loop-zilu/benchmark13_conjunctive.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-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 ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf06395da4b8f86107f4d086333b3a12be01d6e25ea5b5133d532da24fef3f46 --- Real Ultimate output --- This is Ultimate 0.2.2-3a877d227dc491413fd706022d0c47cd97beb353-3a877d2 [2021-12-15 16:53:57,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-15 16:53:57,041 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-15 16:53:57,072 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-15 16:53:57,072 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-15 16:53:57,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-15 16:53:57,086 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-15 16:53:57,090 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-15 16:53:57,092 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-15 16:53:57,096 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-15 16:53:57,097 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-15 16:53:57,098 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-15 16:53:57,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-15 16:53:57,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-15 16:53:57,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-15 16:53:57,103 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-15 16:53:57,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-15 16:53:57,104 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-15 16:53:57,107 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-15 16:53:57,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-15 16:53:57,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-15 16:53:57,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-15 16:53:57,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-15 16:53:57,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-15 16:53:57,118 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-15 16:53:57,118 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-15 16:53:57,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-15 16:53:57,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-15 16:53:57,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-15 16:53:57,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-15 16:53:57,120 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-15 16:53:57,121 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-15 16:53:57,122 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-15 16:53:57,123 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-15 16:53:57,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-15 16:53:57,124 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-15 16:53:57,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-15 16:53:57,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-15 16:53:57,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-15 16:53:57,125 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-15 16:53:57,126 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-15 16:53:57,126 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-32bit-Automizer_Default.epf [2021-12-15 16:53:57,151 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-15 16:53:57,152 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-15 16:53:57,152 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-15 16:53:57,152 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-15 16:53:57,153 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-15 16:53:57,153 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-15 16:53:57,154 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-15 16:53:57,154 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-15 16:53:57,154 INFO L138 SettingsManager]: * Use SBE=true [2021-12-15 16:53:57,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-15 16:53:57,155 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-15 16:53:57,155 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-15 16:53:57,155 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-15 16:53:57,155 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-15 16:53:57,155 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-15 16:53:57,155 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-15 16:53:57,156 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-15 16:53:57,156 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-15 16:53:57,156 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-15 16:53:57,156 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-15 16:53:57,156 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-15 16:53:57,156 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-15 16:53:57,156 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-15 16:53:57,156 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-15 16:53:57,157 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-15 16:53:57,157 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-15 16:53:57,157 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:53:57,157 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-15 16:53:57,157 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-15 16:53:57,157 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-15 16:53:57,157 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-15 16:53:57,158 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-15 16:53:57,158 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-15 16:53:57,158 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-15 16:53:57,158 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf06395da4b8f86107f4d086333b3a12be01d6e25ea5b5133d532da24fef3f46 [2021-12-15 16:53:57,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-15 16:53:57,410 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-15 16:53:57,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-15 16:53:57,413 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-15 16:53:57,413 INFO L275 PluginConnector]: CDTParser initialized [2021-12-15 16:53:57,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-zilu/benchmark13_conjunctive.i [2021-12-15 16:53:57,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7deff224/93389489014c4bc5b3111ce2423d37c8/FLAG58c977298 [2021-12-15 16:53:57,829 INFO L306 CDTParser]: Found 1 translation units. [2021-12-15 16:53:57,830 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-zilu/benchmark13_conjunctive.i [2021-12-15 16:53:57,834 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7deff224/93389489014c4bc5b3111ce2423d37c8/FLAG58c977298 [2021-12-15 16:53:57,842 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7deff224/93389489014c4bc5b3111ce2423d37c8 [2021-12-15 16:53:57,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-15 16:53:57,845 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-15 16:53:57,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-15 16:53:57,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-15 16:53:57,850 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-15 16:53:57,851 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:57,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489ab2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57, skipping insertion in model container [2021-12-15 16:53:57,852 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:57,856 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-15 16:53:57,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-15 16:53:57,957 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/loop-zilu/benchmark13_conjunctive.i[873,886] [2021-12-15 16:53:57,961 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:53:57,966 INFO L203 MainTranslator]: Completed pre-run [2021-12-15 16:53:57,978 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/loop-zilu/benchmark13_conjunctive.i[873,886] [2021-12-15 16:53:57,982 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-15 16:53:57,992 INFO L208 MainTranslator]: Completed translation [2021-12-15 16:53:57,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57 WrapperNode [2021-12-15 16:53:57,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-15 16:53:57,994 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-15 16:53:57,995 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-15 16:53:57,995 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-15 16:53:57,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:58,005 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:58,019 INFO L137 Inliner]: procedures = 15, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 39 [2021-12-15 16:53:58,019 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-15 16:53:58,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-15 16:53:58,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-15 16:53:58,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-15 16:53:58,041 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:58,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:58,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:58,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:58,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:58,046 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:58,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:58,047 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-15 16:53:58,048 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-15 16:53:58,048 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-15 16:53:58,048 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-15 16:53:58,049 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57" (1/1) ... [2021-12-15 16:53:58,054 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-15 16:53:58,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:58,074 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 16:53:58,075 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 16:53:58,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-15 16:53:58,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-15 16:53:58,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-15 16:53:58,099 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-15 16:53:58,138 INFO L236 CfgBuilder]: Building ICFG [2021-12-15 16:53:58,139 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-15 16:53:58,214 INFO L277 CfgBuilder]: Performing block encoding [2021-12-15 16:53:58,218 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-15 16:53:58,218 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-15 16:53:58,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:53:58 BoogieIcfgContainer [2021-12-15 16:53:58,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-15 16:53:58,221 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-15 16:53:58,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-15 16:53:58,223 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-15 16:53:58,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.12 04:53:57" (1/3) ... [2021-12-15 16:53:58,224 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c149393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:53:58, skipping insertion in model container [2021-12-15 16:53:58,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.12 04:53:57" (2/3) ... [2021-12-15 16:53:58,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c149393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.12 04:53:58, skipping insertion in model container [2021-12-15 16:53:58,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.12 04:53:58" (3/3) ... [2021-12-15 16:53:58,226 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark13_conjunctive.i [2021-12-15 16:53:58,229 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-15 16:53:58,230 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-15 16:53:58,266 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-15 16:53:58,273 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=FINITE_AUTOMATA, 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 16:53:58,273 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-15 16:53:58,283 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 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 16:53:58,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-12-15 16:53:58,286 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:58,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-12-15 16:53:58,287 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:53:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:58,291 INFO L85 PathProgramCache]: Analyzing trace with hash 28695973, now seen corresponding path program 1 times [2021-12-15 16:53:58,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:58,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106086370] [2021-12-15 16:53:58,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:58,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:58,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:58,403 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 16:53:58,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:58,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106086370] [2021-12-15 16:53:58,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106086370] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:58,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:58,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:53:58,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121183027] [2021-12-15 16:53:58,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:58,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:53:58,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:58,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:53:58,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:53:58,456 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 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) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 16:53:58,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:58,531 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2021-12-15 16:53:58,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-15 16:53:58,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2021-12-15 16:53:58,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:58,538 INFO L225 Difference]: With dead ends: 35 [2021-12-15 16:53:58,538 INFO L226 Difference]: Without dead ends: 16 [2021-12-15 16:53:58,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:53:58,554 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:58,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 40 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:58,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-15 16:53:58,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2021-12-15 16:53:58,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 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 16:53:58,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-15 16:53:58,574 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 5 [2021-12-15 16:53:58,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:58,575 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-15 16:53:58,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 16:53:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-15 16:53:58,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-15 16:53:58,575 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:58,575 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-15 16:53:58,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-15 16:53:58,576 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:53:58,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:58,577 INFO L85 PathProgramCache]: Analyzing trace with hash 889575213, now seen corresponding path program 1 times [2021-12-15 16:53:58,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:58,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460364862] [2021-12-15 16:53:58,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:58,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:58,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:58,600 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 16:53:58,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:58,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460364862] [2021-12-15 16:53:58,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460364862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:58,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:58,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-15 16:53:58,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148721451] [2021-12-15 16:53:58,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:58,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-15 16:53:58,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:58,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-15 16:53:58,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-15 16:53:58,603 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 16:53:58,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:58,618 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-12-15 16:53:58,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-15 16:53:58,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 6 [2021-12-15 16:53:58,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:58,619 INFO L225 Difference]: With dead ends: 14 [2021-12-15 16:53:58,619 INFO L226 Difference]: Without dead ends: 13 [2021-12-15 16:53:58,619 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-15 16:53:58,621 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 8 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:58,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:58,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-15 16:53:58,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-15 16:53:58,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 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 16:53:58,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-12-15 16:53:58,627 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 6 [2021-12-15 16:53:58,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:58,627 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-12-15 16:53:58,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 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 16:53:58,628 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-12-15 16:53:58,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-15 16:53:58,629 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:58,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:58,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-15 16:53:58,630 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:53:58,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:58,631 INFO L85 PathProgramCache]: Analyzing trace with hash 1807027879, now seen corresponding path program 1 times [2021-12-15 16:53:58,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:58,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289520976] [2021-12-15 16:53:58,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:58,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:58,662 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 16:53:58,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:58,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289520976] [2021-12-15 16:53:58,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1289520976] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:58,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:58,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:53:58,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463793903] [2021-12-15 16:53:58,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:58,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:53:58,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:53:58,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:58,666 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 16:53:58,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:58,675 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-12-15 16:53:58,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:53:58,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2021-12-15 16:53:58,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:58,676 INFO L225 Difference]: With dead ends: 17 [2021-12-15 16:53:58,676 INFO L226 Difference]: Without dead ends: 16 [2021-12-15 16:53:58,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:53:58,677 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:58,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 13 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-15 16:53:58,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-12-15 16:53:58,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 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 16:53:58,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-12-15 16:53:58,680 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 7 [2021-12-15 16:53:58,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:58,680 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-12-15 16:53:58,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 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 16:53:58,681 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-12-15 16:53:58,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-15 16:53:58,681 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:58,681 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:58,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-15 16:53:58,682 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:53:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash 183289455, now seen corresponding path program 1 times [2021-12-15 16:53:58,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:58,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119917142] [2021-12-15 16:53:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:58,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:58,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:58,706 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 16:53:58,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:58,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119917142] [2021-12-15 16:53:58,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119917142] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-15 16:53:58,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-15 16:53:58,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-15 16:53:58,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314902243] [2021-12-15 16:53:58,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-15 16:53:58,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-15 16:53:58,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:58,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-15 16:53:58,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-15 16:53:58,708 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:53:58,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:58,713 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2021-12-15 16:53:58,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-15 16:53:58,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2021-12-15 16:53:58,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:58,714 INFO L225 Difference]: With dead ends: 15 [2021-12-15 16:53:58,714 INFO L226 Difference]: Without dead ends: 14 [2021-12-15 16:53:58,715 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 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 16:53:58,716 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 2 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:58,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 7 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:58,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-15 16:53:58,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-15 16:53:58,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 13 states have internal predecessors, (14), 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 16:53:58,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-15 16:53:58,718 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2021-12-15 16:53:58,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:58,719 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-15 16:53:58,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 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 16:53:58,719 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-15 16:53:58,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-15 16:53:58,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:58,719 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:58,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-15 16:53:58,720 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:53:58,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:58,720 INFO L85 PathProgramCache]: Analyzing trace with hash 47508593, now seen corresponding path program 1 times [2021-12-15 16:53:58,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:58,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601283584] [2021-12-15 16:53:58,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:58,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:58,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:58,761 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:58,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601283584] [2021-12-15 16:53:58,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601283584] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:58,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239873174] [2021-12-15 16:53:58,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:58,762 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:58,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:58,765 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 16:53:58,782 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 16:53:58,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:58,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-15 16:53:58,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:58,847 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:58,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:53:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:58,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239873174] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:53:58,906 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:53:58,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-15 16:53:58,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699365683] [2021-12-15 16:53:58,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:53:58,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-15 16:53:58,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:58,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-15 16:53:58,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-12-15 16:53:58,909 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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 16:53:58,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:58,976 INFO L93 Difference]: Finished difference Result 31 states and 33 transitions. [2021-12-15 16:53:58,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-15 16:53:58,976 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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 10 [2021-12-15 16:53:58,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:58,979 INFO L225 Difference]: With dead ends: 31 [2021-12-15 16:53:58,980 INFO L226 Difference]: Without dead ends: 30 [2021-12-15 16:53:58,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-15 16:53:58,985 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 27 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:58,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 31 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:58,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-12-15 16:53:58,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 27. [2021-12-15 16:53:58,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.16) internal successors, (29), 26 states have internal predecessors, (29), 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 16:53:58,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2021-12-15 16:53:58,993 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 10 [2021-12-15 16:53:58,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:58,993 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2021-12-15 16:53:58,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 10 states have internal predecessors, (18), 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 16:53:58,994 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2021-12-15 16:53:58,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-15 16:53:58,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:58,994 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-15 16:53:59,016 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 16:53:59,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:59,211 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:53:59,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:59,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1588880781, now seen corresponding path program 1 times [2021-12-15 16:53:59,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:59,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586265524] [2021-12-15 16:53:59,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:59,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:59,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:59,233 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:59,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:59,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586265524] [2021-12-15 16:53:59,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586265524] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:59,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284847664] [2021-12-15 16:53:59,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:59,233 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:59,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:59,234 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 16:53:59,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:59,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 50 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-15 16:53:59,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:59,281 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 16:53:59,296 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:59,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:53:59,318 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:59,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284847664] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:53:59,318 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:53:59,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-15 16:53:59,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414566274] [2021-12-15 16:53:59,319 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:53:59,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-15 16:53:59,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:59,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-15 16:53:59,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-15 16:53:59,320 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 16:53:59,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:53:59,332 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2021-12-15 16:53:59,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-15 16:53:59,333 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 12 [2021-12-15 16:53:59,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:53:59,333 INFO L225 Difference]: With dead ends: 30 [2021-12-15 16:53:59,333 INFO L226 Difference]: Without dead ends: 29 [2021-12-15 16:53:59,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-15 16:53:59,334 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:53:59,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:53:59,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-15 16:53:59,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-12-15 16:53:59,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 28 states have internal predecessors, (29), 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 16:53:59,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-12-15 16:53:59,337 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 12 [2021-12-15 16:53:59,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:53:59,337 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-12-15 16:53:59,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.4) internal successors, (22), 6 states have internal predecessors, (22), 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 16:53:59,338 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-12-15 16:53:59,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-15 16:53:59,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:53:59,338 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-12-15 16:53:59,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-15 16:53:59,554 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,SelfDestructingSolverStorable5 [2021-12-15 16:53:59,554 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:53:59,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:53:59,554 INFO L85 PathProgramCache]: Analyzing trace with hash 584006821, now seen corresponding path program 2 times [2021-12-15 16:53:59,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:53:59,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160044366] [2021-12-15 16:53:59,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:53:59,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:53:59,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:53:59,627 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:59,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:53:59,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160044366] [2021-12-15 16:53:59,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160044366] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:53:59,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243363598] [2021-12-15 16:53:59,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 16:53:59,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:53:59,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:53:59,629 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 16:53:59,630 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 16:53:59,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 16:53:59,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:53:59,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-15 16:53:59,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:53:59,764 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:59,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:53:59,888 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:53:59,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243363598] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:53:59,888 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:53:59,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 21 [2021-12-15 16:53:59,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079169968] [2021-12-15 16:53:59,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:53:59,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-15 16:53:59,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:53:59,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-15 16:53:59,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-15 16:53:59,891 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 22 states have internal predecessors, (48), 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 16:54:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:54:00,017 INFO L93 Difference]: Finished difference Result 64 states and 69 transitions. [2021-12-15 16:54:00,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-15 16:54:00,018 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 22 states have internal predecessors, (48), 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 25 [2021-12-15 16:54:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:54:00,020 INFO L225 Difference]: With dead ends: 64 [2021-12-15 16:54:00,020 INFO L226 Difference]: Without dead ends: 63 [2021-12-15 16:54:00,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=306, Invalid=686, Unknown=0, NotChecked=0, Total=992 [2021-12-15 16:54:00,022 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 71 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:54:00,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 55 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:54:00,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-12-15 16:54:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2021-12-15 16:54:00,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.1272727272727272) internal successors, (62), 56 states have internal predecessors, (62), 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 16:54:00,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2021-12-15 16:54:00,035 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 25 [2021-12-15 16:54:00,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:54:00,037 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2021-12-15 16:54:00,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 2.2857142857142856) internal successors, (48), 22 states have internal predecessors, (48), 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 16:54:00,038 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2021-12-15 16:54:00,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-15 16:54:00,038 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:54:00,038 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-12-15 16:54:00,055 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 16:54:00,251 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:00,251 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:54:00,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:54:00,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1410159193, now seen corresponding path program 2 times [2021-12-15 16:54:00,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:54:00,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917567429] [2021-12-15 16:54:00,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:54:00,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:54:00,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:54:00,300 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:00,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:54:00,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917567429] [2021-12-15 16:54:00,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917567429] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:54:00,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703222048] [2021-12-15 16:54:00,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-15 16:54:00,300 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:00,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:54:00,301 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 16:54:00,302 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 16:54:00,325 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-15 16:54:00,325 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:54:00,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-15 16:54:00,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:54:00,366 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:00,367 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:54:00,429 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:00,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703222048] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:54:00,429 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:54:00,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-15 16:54:00,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854328915] [2021-12-15 16:54:00,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:54:00,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-15 16:54:00,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:54:00,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-15 16:54:00,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-15 16:54:00,430 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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 16:54:00,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:54:00,457 INFO L93 Difference]: Finished difference Result 60 states and 65 transitions. [2021-12-15 16:54:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-15 16:54:00,457 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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 27 [2021-12-15 16:54:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:54:00,457 INFO L225 Difference]: With dead ends: 60 [2021-12-15 16:54:00,457 INFO L226 Difference]: Without dead ends: 59 [2021-12-15 16:54:00,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-15 16:54:00,458 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:54:00,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 48 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:54:00,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-15 16:54:00,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2021-12-15 16:54:00,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 57 states have (on average 1.0350877192982457) internal successors, (59), 58 states have internal predecessors, (59), 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 16:54:00,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 59 transitions. [2021-12-15 16:54:00,463 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 59 transitions. Word has length 27 [2021-12-15 16:54:00,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:54:00,463 INFO L470 AbstractCegarLoop]: Abstraction has 59 states and 59 transitions. [2021-12-15 16:54:00,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 12 states have internal predecessors, (52), 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 16:54:00,463 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 59 transitions. [2021-12-15 16:54:00,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-15 16:54:00,464 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:54:00,464 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-12-15 16:54:00,481 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 16:54:00,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:00,681 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:54:00,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:54:00,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1562182875, now seen corresponding path program 3 times [2021-12-15 16:54:00,681 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:54:00,681 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953711786] [2021-12-15 16:54:00,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:54:00,681 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:54:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:54:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:00,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:54:00,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953711786] [2021-12-15 16:54:00,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953711786] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:54:00,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155761967] [2021-12-15 16:54:00,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 16:54:00,894 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:00,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:54:00,895 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 16:54:00,896 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-15 16:54:00,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-15 16:54:00,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:54:00,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-15 16:54:00,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:54:01,047 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:01,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:54:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:01,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [155761967] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:54:01,452 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:54:01,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23, 23] total 45 [2021-12-15 16:54:01,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920625796] [2021-12-15 16:54:01,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:54:01,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-15 16:54:01,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:54:01,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-15 16:54:01,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=1519, Unknown=0, NotChecked=0, Total=2070 [2021-12-15 16:54:01,455 INFO L87 Difference]: Start difference. First operand 59 states and 59 transitions. Second operand has 46 states, 45 states have (on average 2.4) internal successors, (108), 46 states have internal predecessors, (108), 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 16:54:01,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:54:01,814 INFO L93 Difference]: Finished difference Result 130 states and 141 transitions. [2021-12-15 16:54:01,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-15 16:54:01,814 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 2.4) internal successors, (108), 46 states have internal predecessors, (108), 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 55 [2021-12-15 16:54:01,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:54:01,815 INFO L225 Difference]: With dead ends: 130 [2021-12-15 16:54:01,815 INFO L226 Difference]: Without dead ends: 129 [2021-12-15 16:54:01,816 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 862 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1332, Invalid=3224, Unknown=0, NotChecked=0, Total=4556 [2021-12-15 16:54:01,817 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 182 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:54:01,817 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 105 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:54:01,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2021-12-15 16:54:01,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 117. [2021-12-15 16:54:01,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.1130434782608696) internal successors, (128), 116 states have internal predecessors, (128), 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 16:54:01,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2021-12-15 16:54:01,823 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 55 [2021-12-15 16:54:01,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:54:01,824 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2021-12-15 16:54:01,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 2.4) internal successors, (108), 46 states have internal predecessors, (108), 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 16:54:01,824 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2021-12-15 16:54:01,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-15 16:54:01,825 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:54:01,825 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-12-15 16:54:01,845 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-15 16:54:02,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:02,036 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:54:02,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:54:02,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1980812327, now seen corresponding path program 3 times [2021-12-15 16:54:02,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:54:02,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009015228] [2021-12-15 16:54:02,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:54:02,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:54:02,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:54:02,132 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:02,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:54:02,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009015228] [2021-12-15 16:54:02,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009015228] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:54:02,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [704972436] [2021-12-15 16:54:02,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-15 16:54:02,133 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:02,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:54:02,133 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:54:02,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-15 16:54:02,183 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-15 16:54:02,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:54:02,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-15 16:54:02,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:54:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:02,260 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:54:02,461 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:02,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [704972436] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:54:02,462 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:54:02,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-15 16:54:02,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203724080] [2021-12-15 16:54:02,462 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:54:02,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-15 16:54:02,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:54:02,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-15 16:54:02,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-15 16:54:02,463 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 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 16:54:02,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:54:02,511 INFO L93 Difference]: Finished difference Result 120 states and 131 transitions. [2021-12-15 16:54:02,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-15 16:54:02,511 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 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 57 [2021-12-15 16:54:02,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:54:02,512 INFO L225 Difference]: With dead ends: 120 [2021-12-15 16:54:02,512 INFO L226 Difference]: Without dead ends: 119 [2021-12-15 16:54:02,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-15 16:54:02,513 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 22 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-15 16:54:02,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 84 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-15 16:54:02,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-15 16:54:02,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-12-15 16:54:02,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 117 states have (on average 1.017094017094017) internal successors, (119), 118 states have internal predecessors, (119), 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 16:54:02,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 119 transitions. [2021-12-15 16:54:02,518 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 119 transitions. Word has length 57 [2021-12-15 16:54:02,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:54:02,518 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 119 transitions. [2021-12-15 16:54:02,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.869565217391305) internal successors, (112), 24 states have internal predecessors, (112), 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 16:54:02,519 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 119 transitions. [2021-12-15 16:54:02,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-12-15 16:54:02,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:54:02,520 INFO L514 BasicCegarLoop]: trace histogram [23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-12-15 16:54:02,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-15 16:54:02,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:02,723 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:54:02,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:54:02,724 INFO L85 PathProgramCache]: Analyzing trace with hash 708663333, now seen corresponding path program 4 times [2021-12-15 16:54:02,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:54:02,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475432245] [2021-12-15 16:54:02,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:54:02,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:54:02,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:54:03,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:03,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:54:03,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475432245] [2021-12-15 16:54:03,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475432245] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:54:03,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928183718] [2021-12-15 16:54:03,349 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-15 16:54:03,349 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:03,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:54:03,350 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:54:03,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-15 16:54:03,393 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-15 16:54:03,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:54:03,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 277 conjuncts, 47 conjunts are in the unsatisfiable core [2021-12-15 16:54:03,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:54:03,601 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:03,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:54:05,011 INFO L134 CoverageAnalysis]: Checked inductivity of 1199 backedges. 0 proven. 1199 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:05,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928183718] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:54:05,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:54:05,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47, 47, 47] total 93 [2021-12-15 16:54:05,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378038156] [2021-12-15 16:54:05,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:54:05,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 94 states [2021-12-15 16:54:05,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:54:05,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 94 interpolants. [2021-12-15 16:54:05,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2255, Invalid=6487, Unknown=0, NotChecked=0, Total=8742 [2021-12-15 16:54:05,014 INFO L87 Difference]: Start difference. First operand 119 states and 119 transitions. Second operand has 94 states, 93 states have (on average 2.4516129032258065) internal successors, (228), 94 states have internal predecessors, (228), 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 16:54:06,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:54:06,120 INFO L93 Difference]: Finished difference Result 262 states and 285 transitions. [2021-12-15 16:54:06,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 95 states. [2021-12-15 16:54:06,120 INFO L78 Accepts]: Start accepts. Automaton has has 94 states, 93 states have (on average 2.4516129032258065) internal successors, (228), 94 states have internal predecessors, (228), 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 115 [2021-12-15 16:54:06,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:54:06,123 INFO L225 Difference]: With dead ends: 262 [2021-12-15 16:54:06,123 INFO L226 Difference]: Without dead ends: 261 [2021-12-15 16:54:06,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4006 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=5544, Invalid=13916, Unknown=0, NotChecked=0, Total=19460 [2021-12-15 16:54:06,127 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 530 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:54:06,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 165 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:54:06,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2021-12-15 16:54:06,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 237. [2021-12-15 16:54:06,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 235 states have (on average 1.1063829787234043) internal successors, (260), 236 states have internal predecessors, (260), 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 16:54:06,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 260 transitions. [2021-12-15 16:54:06,135 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 260 transitions. Word has length 115 [2021-12-15 16:54:06,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:54:06,136 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 260 transitions. [2021-12-15 16:54:06,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 94 states, 93 states have (on average 2.4516129032258065) internal successors, (228), 94 states have internal predecessors, (228), 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 16:54:06,136 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 260 transitions. [2021-12-15 16:54:06,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-15 16:54:06,137 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:54:06,137 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 22, 22, 1, 1, 1, 1] [2021-12-15 16:54:06,156 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-15 16:54:06,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:06,343 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:54:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:54:06,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1874335449, now seen corresponding path program 4 times [2021-12-15 16:54:06,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:54:06,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713162245] [2021-12-15 16:54:06,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:54:06,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:54:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:54:06,595 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:06,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:54:06,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713162245] [2021-12-15 16:54:06,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713162245] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:54:06,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681507655] [2021-12-15 16:54:06,596 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-15 16:54:06,596 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:06,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:54:06,596 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:54:06,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-15 16:54:06,655 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-15 16:54:06,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:54:06,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-15 16:54:06,659 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:54:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:06,825 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:54:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 1243 backedges. 0 proven. 1243 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:07,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681507655] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:54:07,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:54:07,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-15 16:54:07,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18481751] [2021-12-15 16:54:07,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:54:07,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-15 16:54:07,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:54:07,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-15 16:54:07,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-15 16:54:07,459 INFO L87 Difference]: Start difference. First operand 237 states and 260 transitions. Second operand has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 states have internal predecessors, (232), 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 16:54:07,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:54:07,557 INFO L93 Difference]: Finished difference Result 240 states and 263 transitions. [2021-12-15 16:54:07,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-15 16:54:07,558 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 states have internal predecessors, (232), 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 117 [2021-12-15 16:54:07,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:54:07,558 INFO L225 Difference]: With dead ends: 240 [2021-12-15 16:54:07,559 INFO L226 Difference]: Without dead ends: 239 [2021-12-15 16:54:07,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-15 16:54:07,560 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 69 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-15 16:54:07,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 158 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-15 16:54:07,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-15 16:54:07,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-12-15 16:54:07,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 237 states have (on average 1.0084388185654007) internal successors, (239), 238 states have internal predecessors, (239), 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 16:54:07,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 239 transitions. [2021-12-15 16:54:07,573 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 239 transitions. Word has length 117 [2021-12-15 16:54:07,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:54:07,574 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 239 transitions. [2021-12-15 16:54:07,574 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 4.9361702127659575) internal successors, (232), 48 states have internal predecessors, (232), 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 16:54:07,574 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 239 transitions. [2021-12-15 16:54:07,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-15 16:54:07,576 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:54:07,576 INFO L514 BasicCegarLoop]: trace histogram [47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-12-15 16:54:07,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-15 16:54:07,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-15 16:54:07,793 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:54:07,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:54:07,793 INFO L85 PathProgramCache]: Analyzing trace with hash -383938011, now seen corresponding path program 5 times [2021-12-15 16:54:07,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:54:07,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949882639] [2021-12-15 16:54:07,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:54:07,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:54:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:54:09,887 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:09,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:54:09,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949882639] [2021-12-15 16:54:09,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949882639] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:54:09,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2132901133] [2021-12-15 16:54:09,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-15 16:54:09,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:09,888 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:54:09,888 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:54:09,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-15 16:54:09,989 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-15 16:54:09,990 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:54:09,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-15 16:54:09,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:54:10,394 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:10,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:54:15,498 INFO L134 CoverageAnalysis]: Checked inductivity of 5267 backedges. 0 proven. 5267 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:15,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2132901133] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:54:15,499 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:54:15,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [95, 95, 95] total 189 [2021-12-15 16:54:15,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644899161] [2021-12-15 16:54:15,499 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:54:15,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 190 states [2021-12-15 16:54:15,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:54:15,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 190 interpolants. [2021-12-15 16:54:15,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9119, Invalid=26791, Unknown=0, NotChecked=0, Total=35910 [2021-12-15 16:54:15,514 INFO L87 Difference]: Start difference. First operand 239 states and 239 transitions. Second operand has 190 states, 189 states have (on average 2.4761904761904763) internal successors, (468), 190 states have internal predecessors, (468), 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 16:54:19,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:54:19,747 INFO L93 Difference]: Finished difference Result 526 states and 573 transitions. [2021-12-15 16:54:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 191 states. [2021-12-15 16:54:19,748 INFO L78 Accepts]: Start accepts. Automaton has has 190 states, 189 states have (on average 2.4761904761904763) internal successors, (468), 190 states have internal predecessors, (468), 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 235 [2021-12-15 16:54:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:54:19,749 INFO L225 Difference]: With dead ends: 526 [2021-12-15 16:54:19,749 INFO L226 Difference]: Without dead ends: 525 [2021-12-15 16:54:19,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 657 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17206 ImplicationChecksByTransitivity, 9.8s TimeCoverageRelationStatistics Valid=22608, Invalid=57764, Unknown=0, NotChecked=0, Total=80372 [2021-12-15 16:54:19,754 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 1333 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1333 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-15 16:54:19,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1333 Valid, 264 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-15 16:54:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2021-12-15 16:54:19,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 477. [2021-12-15 16:54:19,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 477 states, 475 states have (on average 1.1031578947368421) internal successors, (524), 476 states have internal predecessors, (524), 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 16:54:19,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 524 transitions. [2021-12-15 16:54:19,762 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 524 transitions. Word has length 235 [2021-12-15 16:54:19,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:54:19,762 INFO L470 AbstractCegarLoop]: Abstraction has 477 states and 524 transitions. [2021-12-15 16:54:19,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 190 states, 189 states have (on average 2.4761904761904763) internal successors, (468), 190 states have internal predecessors, (468), 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 16:54:19,763 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 524 transitions. [2021-12-15 16:54:19,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2021-12-15 16:54:19,765 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:54:19,765 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 46, 46, 1, 1, 1, 1] [2021-12-15 16:54:19,785 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2021-12-15 16:54:19,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-15 16:54:19,979 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:54:19,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:54:19,980 INFO L85 PathProgramCache]: Analyzing trace with hash 402760487, now seen corresponding path program 5 times [2021-12-15 16:54:19,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:54:19,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932774684] [2021-12-15 16:54:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:54:19,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:54:20,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:54:20,757 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:20,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:54:20,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932774684] [2021-12-15 16:54:20,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932774684] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:54:20,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001686175] [2021-12-15 16:54:20,758 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-15 16:54:20,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:20,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:54:20,759 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:54:20,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-15 16:54:20,863 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-15 16:54:20,863 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:54:20,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-15 16:54:20,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:54:21,262 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:21,262 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:54:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5359 backedges. 0 proven. 5359 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:23,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001686175] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:54:23,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:54:23,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-15 16:54:23,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467721576] [2021-12-15 16:54:23,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:54:23,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-15 16:54:23,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:54:23,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-15 16:54:23,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-15 16:54:23,330 INFO L87 Difference]: Start difference. First operand 477 states and 524 transitions. Second operand has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 states have internal predecessors, (472), 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 16:54:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-15 16:54:23,568 INFO L93 Difference]: Finished difference Result 480 states and 527 transitions. [2021-12-15 16:54:23,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-15 16:54:23,569 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 states have internal predecessors, (472), 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 237 [2021-12-15 16:54:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-15 16:54:23,570 INFO L225 Difference]: With dead ends: 480 [2021-12-15 16:54:23,570 INFO L226 Difference]: Without dead ends: 479 [2021-12-15 16:54:23,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 520 GetRequests, 426 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-15 16:54:23,571 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 94 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 304 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-15 16:54:23,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 304 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-15 16:54:23,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2021-12-15 16:54:23,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 479. [2021-12-15 16:54:23,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 477 states have (on average 1.0041928721174005) internal successors, (479), 478 states have internal predecessors, (479), 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 16:54:23,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 479 transitions. [2021-12-15 16:54:23,591 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 479 transitions. Word has length 237 [2021-12-15 16:54:23,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-15 16:54:23,591 INFO L470 AbstractCegarLoop]: Abstraction has 479 states and 479 transitions. [2021-12-15 16:54:23,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 4.968421052631579) internal successors, (472), 96 states have internal predecessors, (472), 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 16:54:23,592 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 479 transitions. [2021-12-15 16:54:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2021-12-15 16:54:23,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-15 16:54:23,596 INFO L514 BasicCegarLoop]: trace histogram [95, 94, 94, 94, 94, 1, 1, 1, 1] [2021-12-15 16:54:23,613 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-15 16:54:23,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-15 16:54:23,811 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-12-15 16:54:23,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-15 16:54:23,812 INFO L85 PathProgramCache]: Analyzing trace with hash 311166501, now seen corresponding path program 6 times [2021-12-15 16:54:23,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-15 16:54:23,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020481145] [2021-12-15 16:54:23,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-15 16:54:23,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-15 16:54:23,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-15 16:54:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:31,380 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-15 16:54:31,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020481145] [2021-12-15 16:54:31,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020481145] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-15 16:54:31,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323250794] [2021-12-15 16:54:31,380 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-15 16:54:31,380 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-15 16:54:31,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-15 16:54:31,381 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-15 16:54:31,383 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-15 16:54:31,617 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-15 16:54:31,617 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-15 16:54:31,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 191 conjunts are in the unsatisfiable core [2021-12-15 16:54:31,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-15 16:54:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:32,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-15 16:54:51,724 INFO L134 CoverageAnalysis]: Checked inductivity of 22043 backedges. 0 proven. 22043 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-15 16:54:51,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323250794] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-15 16:54:51,724 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-15 16:54:51,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [191, 191, 191] total 381 [2021-12-15 16:54:51,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465892738] [2021-12-15 16:54:51,725 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-15 16:54:51,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 382 states [2021-12-15 16:54:51,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-15 16:54:51,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 382 interpolants. [2021-12-15 16:54:51,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36671, Invalid=108871, Unknown=0, NotChecked=0, Total=145542 [2021-12-15 16:54:51,735 INFO L87 Difference]: Start difference. First operand 479 states and 479 transitions. Second operand has 382 states, 381 states have (on average 2.4881889763779528) internal successors, (948), 382 states have internal predecessors, (948), 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)