./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version c3fed411 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/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-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 64bit --witnessprinter.graph.data.programhash 70ea356a4fda57b451264a060e40bb07db2fe648bea4e3256fcecf71a5a8e7b7 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 09:00:22,241 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 09:00:22,250 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 09:00:22,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 09:00:22,287 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 09:00:22,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 09:00:22,289 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 09:00:22,292 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 09:00:22,293 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 09:00:22,294 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 09:00:22,295 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 09:00:22,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 09:00:22,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 09:00:22,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 09:00:22,300 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 09:00:22,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 09:00:22,302 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 09:00:22,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 09:00:22,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 09:00:22,312 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 09:00:22,315 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 09:00:22,316 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 09:00:22,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 09:00:22,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 09:00:22,319 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 09:00:22,321 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 09:00:22,322 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 09:00:22,322 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 09:00:22,323 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 09:00:22,323 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 09:00:22,324 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 09:00:22,324 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 09:00:22,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 09:00:22,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 09:00:22,326 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 09:00:22,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 09:00:22,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 09:00:22,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 09:00:22,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 09:00:22,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 09:00:22,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 09:00:22,330 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-16 09:00:22,353 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 09:00:22,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 09:00:22,354 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 09:00:22,354 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 09:00:22,355 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 09:00:22,355 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 09:00:22,356 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 09:00:22,356 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 09:00:22,356 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 09:00:22,356 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 09:00:22,357 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-16 09:00:22,357 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 09:00:22,357 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 09:00:22,357 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 09:00:22,357 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 09:00:22,357 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 09:00:22,357 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-16 09:00:22,358 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 09:00:22,358 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 09:00:22,358 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 09:00:22,358 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 09:00:22,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 09:00:22,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 09:00:22,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:00:22,359 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 09:00:22,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 09:00:22,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 09:00:22,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 09:00:22,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 09:00:22,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 09:00:22,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 09:00:22,360 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 70ea356a4fda57b451264a060e40bb07db2fe648bea4e3256fcecf71a5a8e7b7 [2021-12-16 09:00:22,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 09:00:22,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 09:00:22,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 09:00:22,589 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 09:00:22,589 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 09:00:22,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2021-12-16 09:00:22,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9044d4b5/1f6bace055574e3594494b56445ab23f/FLAG893daf8ed [2021-12-16 09:00:22,971 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 09:00:22,972 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2021-12-16 09:00:22,979 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9044d4b5/1f6bace055574e3594494b56445ab23f/FLAG893daf8ed [2021-12-16 09:00:22,994 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c9044d4b5/1f6bace055574e3594494b56445ab23f [2021-12-16 09:00:22,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 09:00:22,998 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 09:00:22,999 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 09:00:22,999 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 09:00:23,001 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 09:00:23,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:00:22" (1/1) ... [2021-12-16 09:00:23,003 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15f4bde6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23, skipping insertion in model container [2021-12-16 09:00:23,003 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 09:00:22" (1/1) ... [2021-12-16 09:00:23,008 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 09:00:23,021 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 09:00:23,139 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:00:23,145 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 09:00:23,156 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 09:00:23,163 INFO L208 MainTranslator]: Completed translation [2021-12-16 09:00:23,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23 WrapperNode [2021-12-16 09:00:23,164 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 09:00:23,165 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 09:00:23,165 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 09:00:23,166 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 09:00:23,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23" (1/1) ... [2021-12-16 09:00:23,174 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23" (1/1) ... [2021-12-16 09:00:23,186 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2021-12-16 09:00:23,186 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 09:00:23,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 09:00:23,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 09:00:23,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 09:00:23,193 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23" (1/1) ... [2021-12-16 09:00:23,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23" (1/1) ... [2021-12-16 09:00:23,194 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23" (1/1) ... [2021-12-16 09:00:23,194 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23" (1/1) ... [2021-12-16 09:00:23,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23" (1/1) ... [2021-12-16 09:00:23,202 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23" (1/1) ... [2021-12-16 09:00:23,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23" (1/1) ... [2021-12-16 09:00:23,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 09:00:23,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 09:00:23,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 09:00:23,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 09:00:23,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23" (1/1) ... [2021-12-16 09:00:23,213 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 09:00:23,219 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:23,240 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) [2021-12-16 09:00:23,252 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 [2021-12-16 09:00:23,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 09:00:23,276 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 09:00:23,314 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 09:00:23,315 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 09:00:23,411 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 09:00:23,415 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 09:00:23,419 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 09:00:23,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:00:23 BoogieIcfgContainer [2021-12-16 09:00:23,420 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 09:00:23,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 09:00:23,422 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 09:00:23,424 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 09:00:23,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 09:00:22" (1/3) ... [2021-12-16 09:00:23,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f87089e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:00:23, skipping insertion in model container [2021-12-16 09:00:23,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 09:00:23" (2/3) ... [2021-12-16 09:00:23,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f87089e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 09:00:23, skipping insertion in model container [2021-12-16 09:00:23,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 09:00:23" (3/3) ... [2021-12-16 09:00:23,428 INFO L111 eAbstractionObserver]: Analyzing ICFG ChawdharyCookGulwaniSagivYang-ESOP2008-random1d.c [2021-12-16 09:00:23,432 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 09:00:23,432 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-16 09:00:23,469 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 09:00:23,475 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 [2021-12-16 09:00:23,476 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-16 09:00:23,486 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 states have internal predecessors, (24), 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) [2021-12-16 09:00:23,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-12-16 09:00:23,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:23,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-12-16 09:00:23,491 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:23,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:23,495 INFO L85 PathProgramCache]: Analyzing trace with hash 889513677, now seen corresponding path program 1 times [2021-12-16 09:00:23,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:23,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086464071] [2021-12-16 09:00:23,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:23,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:23,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:23,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:23,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:23,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086464071] [2021-12-16 09:00:23,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086464071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:00:23,593 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:00:23,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:00:23,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680378108] [2021-12-16 09:00:23,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:00:23,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:00:23,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:23,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:00:23,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:00:23,620 INFO L87 Difference]: Start difference. First operand has 21 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 20 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-12-16 09:00:23,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:23,677 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2021-12-16 09:00:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:00:23,679 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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 [2021-12-16 09:00:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:23,683 INFO L225 Difference]: With dead ends: 41 [2021-12-16 09:00:23,695 INFO L226 Difference]: Without dead ends: 27 [2021-12-16 09:00:23,697 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 [2021-12-16 09:00:23,700 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 13 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:23,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 37 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:00:23,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-16 09:00:23,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2021-12-16 09:00:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 18 states have (on average 1.6111111111111112) internal successors, (29), 23 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) [2021-12-16 09:00:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 29 transitions. [2021-12-16 09:00:23,722 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 29 transitions. Word has length 6 [2021-12-16 09:00:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:23,722 INFO L470 AbstractCegarLoop]: Abstraction has 24 states and 29 transitions. [2021-12-16 09:00:23,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 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) [2021-12-16 09:00:23,723 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 29 transitions. [2021-12-16 09:00:23,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-16 09:00:23,723 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:23,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:00:23,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 09:00:23,724 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:23,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:23,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1805120262, now seen corresponding path program 1 times [2021-12-16 09:00:23,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:23,726 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634085833] [2021-12-16 09:00:23,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:23,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:23,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:23,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:23,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:23,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634085833] [2021-12-16 09:00:23,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634085833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:00:23,759 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:00:23,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:00:23,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450806874] [2021-12-16 09:00:23,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:00:23,760 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:00:23,760 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:23,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:00:23,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:00:23,761 INFO L87 Difference]: Start difference. First operand 24 states and 29 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) [2021-12-16 09:00:23,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:23,781 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2021-12-16 09:00:23,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:00:23,781 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 [2021-12-16 09:00:23,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:23,782 INFO L225 Difference]: With dead ends: 41 [2021-12-16 09:00:23,782 INFO L226 Difference]: Without dead ends: 39 [2021-12-16 09:00:23,782 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 [2021-12-16 09:00:23,786 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:23,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 20 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:00:23,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-16 09:00:23,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2021-12-16 09:00:23,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 36 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) [2021-12-16 09:00:23,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2021-12-16 09:00:23,792 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 7 [2021-12-16 09:00:23,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:23,793 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2021-12-16 09:00:23,793 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) [2021-12-16 09:00:23,794 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2021-12-16 09:00:23,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-16 09:00:23,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:23,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:00:23,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 09:00:23,795 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:23,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:23,796 INFO L85 PathProgramCache]: Analyzing trace with hash 124153334, now seen corresponding path program 1 times [2021-12-16 09:00:23,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:23,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277846595] [2021-12-16 09:00:23,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:23,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:23,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:23,814 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:23,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277846595] [2021-12-16 09:00:23,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277846595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:00:23,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:00:23,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:00:23,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929790360] [2021-12-16 09:00:23,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:00:23,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:00:23,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:23,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:00:23,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:00:23,822 INFO L87 Difference]: Start difference. First operand 37 states and 48 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) [2021-12-16 09:00:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:23,842 INFO L93 Difference]: Finished difference Result 43 states and 57 transitions. [2021-12-16 09:00:23,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:00:23,842 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 [2021-12-16 09:00:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:23,846 INFO L225 Difference]: With dead ends: 43 [2021-12-16 09:00:23,846 INFO L226 Difference]: Without dead ends: 42 [2021-12-16 09:00:23,847 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 [2021-12-16 09:00:23,851 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 5 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:23,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 25 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:00:23,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-12-16 09:00:23,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2021-12-16 09:00:23,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 34 states have (on average 1.5) internal successors, (51), 39 states have internal predecessors, (51), 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) [2021-12-16 09:00:23,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2021-12-16 09:00:23,865 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 8 [2021-12-16 09:00:23,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:23,866 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-12-16 09:00:23,866 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) [2021-12-16 09:00:23,866 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2021-12-16 09:00:23,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-16 09:00:23,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:23,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:00:23,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 09:00:23,868 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:23,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:23,869 INFO L85 PathProgramCache]: Analyzing trace with hash -446213880, now seen corresponding path program 1 times [2021-12-16 09:00:23,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:23,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519917993] [2021-12-16 09:00:23,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:23,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:23,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:23,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:23,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519917993] [2021-12-16 09:00:23,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519917993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 09:00:23,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 09:00:23,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-16 09:00:23,899 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59656905] [2021-12-16 09:00:23,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 09:00:23,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 09:00:23,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:23,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 09:00:23,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 09:00:23,900 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:23,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:23,912 INFO L93 Difference]: Finished difference Result 40 states and 51 transitions. [2021-12-16 09:00:23,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 09:00:23,912 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-16 09:00:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:23,913 INFO L225 Difference]: With dead ends: 40 [2021-12-16 09:00:23,913 INFO L226 Difference]: Without dead ends: 39 [2021-12-16 09:00:23,913 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 [2021-12-16 09:00:23,914 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 8 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:23,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 14 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:00:23,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-16 09:00:23,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-16 09:00:23,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 34 states have (on average 1.411764705882353) internal successors, (48), 38 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) [2021-12-16 09:00:23,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 48 transitions. [2021-12-16 09:00:23,917 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 48 transitions. Word has length 9 [2021-12-16 09:00:23,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:23,918 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 48 transitions. [2021-12-16 09:00:23,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:23,918 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 48 transitions. [2021-12-16 09:00:23,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-16 09:00:23,918 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:23,918 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:00:23,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 09:00:23,919 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:23,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:23,919 INFO L85 PathProgramCache]: Analyzing trace with hash -233874170, now seen corresponding path program 1 times [2021-12-16 09:00:23,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:23,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761279838] [2021-12-16 09:00:23,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:23,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:23,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:23,942 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:23,943 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:23,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761279838] [2021-12-16 09:00:23,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761279838] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:23,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78418338] [2021-12-16 09:00:23,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:23,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:23,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:23,945 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) [2021-12-16 09:00:23,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 09:00:23,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:23,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 09:00:23,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:24,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:24,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78418338] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:24,040 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:24,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-16 09:00:24,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535938445] [2021-12-16 09:00:24,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:24,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 09:00:24,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:24,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 09:00:24,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:00:24,041 INFO L87 Difference]: Start difference. First operand 39 states and 48 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) [2021-12-16 09:00:24,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:24,094 INFO L93 Difference]: Finished difference Result 98 states and 135 transitions. [2021-12-16 09:00:24,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:00:24,094 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 [2021-12-16 09:00:24,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:24,095 INFO L225 Difference]: With dead ends: 98 [2021-12-16 09:00:24,095 INFO L226 Difference]: Without dead ends: 96 [2021-12-16 09:00:24,095 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 [2021-12-16 09:00:24,096 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 36 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:24,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 41 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:00:24,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-16 09:00:24,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 79. [2021-12-16 09:00:24,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 78 states have internal predecessors, (103), 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) [2021-12-16 09:00:24,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 103 transitions. [2021-12-16 09:00:24,109 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 103 transitions. Word has length 12 [2021-12-16 09:00:24,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:24,109 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 103 transitions. [2021-12-16 09:00:24,109 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) [2021-12-16 09:00:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 103 transitions. [2021-12-16 09:00:24,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-16 09:00:24,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:24,110 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 09:00:24,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:24,326 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 [2021-12-16 09:00:24,326 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:24,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:24,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1982025395, now seen corresponding path program 1 times [2021-12-16 09:00:24,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:24,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831391947] [2021-12-16 09:00:24,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:24,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:24,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:24,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:24,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831391947] [2021-12-16 09:00:24,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831391947] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:24,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315848303] [2021-12-16 09:00:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:24,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:24,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:24,351 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) [2021-12-16 09:00:24,352 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 09:00:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:24,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 09:00:24,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:24,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:24,393 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:24,444 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:24,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315848303] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:24,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:24,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-16 09:00:24,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948273490] [2021-12-16 09:00:24,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:24,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 09:00:24,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:24,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 09:00:24,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:00:24,446 INFO L87 Difference]: Start difference. First operand 79 states and 103 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-12-16 09:00:24,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:24,474 INFO L93 Difference]: Finished difference Result 135 states and 186 transitions. [2021-12-16 09:00:24,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 09:00:24,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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 13 [2021-12-16 09:00:24,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:24,476 INFO L225 Difference]: With dead ends: 135 [2021-12-16 09:00:24,476 INFO L226 Difference]: Without dead ends: 133 [2021-12-16 09:00:24,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:00:24,477 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 35 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:24,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 23 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:00:24,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-12-16 09:00:24,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 99. [2021-12-16 09:00:24,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 95 states have (on average 1.3473684210526315) internal successors, (128), 98 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) [2021-12-16 09:00:24,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 128 transitions. [2021-12-16 09:00:24,485 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 128 transitions. Word has length 13 [2021-12-16 09:00:24,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:24,485 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 128 transitions. [2021-12-16 09:00:24,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 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) [2021-12-16 09:00:24,485 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 128 transitions. [2021-12-16 09:00:24,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-16 09:00:24,486 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:24,486 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-16 09:00:24,501 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:24,695 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 [2021-12-16 09:00:24,695 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:24,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:24,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1414776337, now seen corresponding path program 1 times [2021-12-16 09:00:24,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:24,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2005672833] [2021-12-16 09:00:24,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:24,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:24,721 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:24,721 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:24,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2005672833] [2021-12-16 09:00:24,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2005672833] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:24,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [917693649] [2021-12-16 09:00:24,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:24,722 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:24,722 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:24,723 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) [2021-12-16 09:00:24,724 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 09:00:24,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:24,742 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 09:00:24,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:24,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:24,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:24,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [917693649] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:24,793 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:24,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-16 09:00:24,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389655058] [2021-12-16 09:00:24,794 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:24,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 09:00:24,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:24,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 09:00:24,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:00:24,808 INFO L87 Difference]: Start difference. First operand 99 states and 128 transitions. Second operand has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:24,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:24,833 INFO L93 Difference]: Finished difference Result 207 states and 268 transitions. [2021-12-16 09:00:24,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 09:00:24,834 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-16 09:00:24,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:24,836 INFO L225 Difference]: With dead ends: 207 [2021-12-16 09:00:24,837 INFO L226 Difference]: Without dead ends: 206 [2021-12-16 09:00:24,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-16 09:00:24,838 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 33 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:24,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 44 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:00:24,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-12-16 09:00:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 204. [2021-12-16 09:00:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 200 states have (on average 1.24) internal successors, (248), 203 states have internal predecessors, (248), 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) [2021-12-16 09:00:24,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 248 transitions. [2021-12-16 09:00:24,853 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 248 transitions. Word has length 14 [2021-12-16 09:00:24,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:24,853 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 248 transitions. [2021-12-16 09:00:24,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.2) internal successors, (26), 6 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 09:00:24,853 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 248 transitions. [2021-12-16 09:00:24,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-16 09:00:24,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:24,854 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 1, 1, 1, 1] [2021-12-16 09:00:24,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:25,062 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 [2021-12-16 09:00:25,063 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:25,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:25,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1022063642, now seen corresponding path program 1 times [2021-12-16 09:00:25,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:25,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37560955] [2021-12-16 09:00:25,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:25,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:25,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:25,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37560955] [2021-12-16 09:00:25,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37560955] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:25,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422744482] [2021-12-16 09:00:25,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:25,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:25,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:25,111 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) [2021-12-16 09:00:25,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 09:00:25,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:25,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-16 09:00:25,207 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:25,239 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:25,286 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:25,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422744482] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:25,287 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:25,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-12-16 09:00:25,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992472082] [2021-12-16 09:00:25,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:25,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 09:00:25,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:25,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 09:00:25,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:00:25,292 INFO L87 Difference]: Start difference. First operand 204 states and 248 transitions. Second operand has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-12-16 09:00:25,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:25,374 INFO L93 Difference]: Finished difference Result 399 states and 515 transitions. [2021-12-16 09:00:25,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 09:00:25,374 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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 19 [2021-12-16 09:00:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:25,376 INFO L225 Difference]: With dead ends: 399 [2021-12-16 09:00:25,376 INFO L226 Difference]: Without dead ends: 398 [2021-12-16 09:00:25,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-12-16 09:00:25,379 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:25,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 49 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:00:25,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-12-16 09:00:25,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 330. [2021-12-16 09:00:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 326 states have (on average 1.2760736196319018) internal successors, (416), 329 states have internal predecessors, (416), 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) [2021-12-16 09:00:25,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 416 transitions. [2021-12-16 09:00:25,411 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 416 transitions. Word has length 19 [2021-12-16 09:00:25,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:25,411 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 416 transitions. [2021-12-16 09:00:25,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 5.142857142857143) internal successors, (36), 8 states have internal predecessors, (36), 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) [2021-12-16 09:00:25,412 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 416 transitions. [2021-12-16 09:00:25,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-12-16 09:00:25,413 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:25,413 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1] [2021-12-16 09:00:25,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:25,631 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 [2021-12-16 09:00:25,631 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:25,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:25,631 INFO L85 PathProgramCache]: Analyzing trace with hash -957667535, now seen corresponding path program 2 times [2021-12-16 09:00:25,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:25,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782654605] [2021-12-16 09:00:25,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:25,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:25,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:25,684 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:25,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:25,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782654605] [2021-12-16 09:00:25,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782654605] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:25,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050540338] [2021-12-16 09:00:25,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:00:25,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:25,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:25,686 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) [2021-12-16 09:00:25,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 09:00:25,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:00:25,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:25,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 09:00:25,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:25,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:25,845 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:25,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050540338] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:25,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:25,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-16 09:00:25,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276370280] [2021-12-16 09:00:25,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:25,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 09:00:25,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:25,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 09:00:25,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 09:00:25,847 INFO L87 Difference]: Start difference. First operand 330 states and 416 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 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) [2021-12-16 09:00:25,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:25,936 INFO L93 Difference]: Finished difference Result 871 states and 1195 transitions. [2021-12-16 09:00:25,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 09:00:25,937 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 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 30 [2021-12-16 09:00:25,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:25,940 INFO L225 Difference]: With dead ends: 871 [2021-12-16 09:00:25,940 INFO L226 Difference]: Without dead ends: 869 [2021-12-16 09:00:25,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 09:00:25,942 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 111 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:25,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 81 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:00:25,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2021-12-16 09:00:25,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 573. [2021-12-16 09:00:25,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 569 states have (on average 1.2864674868189807) internal successors, (732), 572 states have internal predecessors, (732), 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) [2021-12-16 09:00:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 732 transitions. [2021-12-16 09:00:25,963 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 732 transitions. Word has length 30 [2021-12-16 09:00:25,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:25,963 INFO L470 AbstractCegarLoop]: Abstraction has 573 states and 732 transitions. [2021-12-16 09:00:25,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 12 states have internal predecessors, (58), 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) [2021-12-16 09:00:25,964 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 732 transitions. [2021-12-16 09:00:25,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 09:00:25,969 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:25,970 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 1, 1, 1, 1] [2021-12-16 09:00:25,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-16 09:00:26,185 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 [2021-12-16 09:00:26,186 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:26,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:26,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1195498150, now seen corresponding path program 2 times [2021-12-16 09:00:26,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:26,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286605613] [2021-12-16 09:00:26,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:26,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:26,237 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:26,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:26,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286605613] [2021-12-16 09:00:26,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286605613] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:26,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [635308509] [2021-12-16 09:00:26,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:00:26,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:26,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:26,239 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) [2021-12-16 09:00:26,240 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 09:00:26,265 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:00:26,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:26,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 09:00:26,268 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:26,324 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:26,324 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:26,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [635308509] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:26,405 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:26,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-16 09:00:26,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659332339] [2021-12-16 09:00:26,405 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:26,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 09:00:26,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:26,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 09:00:26,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 09:00:26,406 INFO L87 Difference]: Start difference. First operand 573 states and 732 transitions. Second operand has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 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) [2021-12-16 09:00:26,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:26,454 INFO L93 Difference]: Finished difference Result 1650 states and 2141 transitions. [2021-12-16 09:00:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 09:00:26,455 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 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) Word has length 32 [2021-12-16 09:00:26,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:26,459 INFO L225 Difference]: With dead ends: 1650 [2021-12-16 09:00:26,459 INFO L226 Difference]: Without dead ends: 1649 [2021-12-16 09:00:26,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-16 09:00:26,461 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 85 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:26,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 86 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 09:00:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2021-12-16 09:00:26,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1645. [2021-12-16 09:00:26,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1645 states, 1641 states have (on average 1.193784277879342) internal successors, (1959), 1644 states have internal predecessors, (1959), 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) [2021-12-16 09:00:26,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1645 states to 1645 states and 1959 transitions. [2021-12-16 09:00:26,516 INFO L78 Accepts]: Start accepts. Automaton has 1645 states and 1959 transitions. Word has length 32 [2021-12-16 09:00:26,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:26,517 INFO L470 AbstractCegarLoop]: Abstraction has 1645 states and 1959 transitions. [2021-12-16 09:00:26,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.636363636363637) internal successors, (62), 12 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) [2021-12-16 09:00:26,517 INFO L276 IsEmpty]: Start isEmpty. Operand 1645 states and 1959 transitions. [2021-12-16 09:00:26,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-16 09:00:26,518 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:26,518 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 1, 1, 1, 1] [2021-12-16 09:00:26,538 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:26,736 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 [2021-12-16 09:00:26,736 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:26,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:26,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1056880102, now seen corresponding path program 2 times [2021-12-16 09:00:26,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:26,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349525719] [2021-12-16 09:00:26,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:26,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:26,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:26,789 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:26,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:26,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349525719] [2021-12-16 09:00:26,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349525719] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:26,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [806730701] [2021-12-16 09:00:26,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 09:00:26,791 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:26,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:26,792 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) [2021-12-16 09:00:26,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 09:00:26,816 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 09:00:26,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:26,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 09:00:26,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:26,884 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:26,884 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:26,998 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 114 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:26,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [806730701] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:26,998 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:26,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2021-12-16 09:00:26,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71089118] [2021-12-16 09:00:26,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:27,000 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-16 09:00:27,000 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:27,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-16 09:00:27,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-12-16 09:00:27,000 INFO L87 Difference]: Start difference. First operand 1645 states and 1959 transitions. Second operand has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 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) [2021-12-16 09:00:27,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:27,112 INFO L93 Difference]: Finished difference Result 3431 states and 4254 transitions. [2021-12-16 09:00:27,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 09:00:27,112 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 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 43 [2021-12-16 09:00:27,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:27,120 INFO L225 Difference]: With dead ends: 3431 [2021-12-16 09:00:27,120 INFO L226 Difference]: Without dead ends: 3430 [2021-12-16 09:00:27,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-12-16 09:00:27,122 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 135 mSDsluCounter, 89 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 99 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:27,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 99 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:00:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3430 states. [2021-12-16 09:00:27,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3430 to 2080. [2021-12-16 09:00:27,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 2076 states have (on average 1.2129094412331407) internal successors, (2518), 2079 states have internal predecessors, (2518), 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) [2021-12-16 09:00:27,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2518 transitions. [2021-12-16 09:00:27,192 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2518 transitions. Word has length 43 [2021-12-16 09:00:27,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:27,192 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 2518 transitions. [2021-12-16 09:00:27,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.6) internal successors, (84), 16 states have internal predecessors, (84), 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) [2021-12-16 09:00:27,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2518 transitions. [2021-12-16 09:00:27,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-16 09:00:27,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:27,195 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1] [2021-12-16 09:00:27,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:27,413 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 [2021-12-16 09:00:27,413 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:27,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:27,414 INFO L85 PathProgramCache]: Analyzing trace with hash -1254740665, now seen corresponding path program 3 times [2021-12-16 09:00:27,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:27,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316825309] [2021-12-16 09:00:27,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:27,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:27,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:27,507 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:27,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:27,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316825309] [2021-12-16 09:00:27,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [316825309] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:27,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272825903] [2021-12-16 09:00:27,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:00:27,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:27,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:27,509 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) [2021-12-16 09:00:27,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 09:00:27,543 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-16 09:00:27,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:27,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 09:00:27,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:27,631 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:27,631 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:27,842 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:27,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272825903] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:27,843 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:27,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-16 09:00:27,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023121195] [2021-12-16 09:00:27,843 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:27,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-16 09:00:27,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:27,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-16 09:00:27,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:00:27,844 INFO L87 Difference]: Start difference. First operand 2080 states and 2518 transitions. Second operand has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 24 states have internal predecessors, (130), 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) [2021-12-16 09:00:27,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:27,999 INFO L93 Difference]: Finished difference Result 5604 states and 7380 transitions. [2021-12-16 09:00:27,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 09:00:28,000 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 24 states have internal predecessors, (130), 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 66 [2021-12-16 09:00:28,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:28,012 INFO L225 Difference]: With dead ends: 5604 [2021-12-16 09:00:28,012 INFO L226 Difference]: Without dead ends: 5602 [2021-12-16 09:00:28,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:00:28,015 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 202 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:28,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [202 Valid, 161 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:00:28,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5602 states. [2021-12-16 09:00:28,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5602 to 3121. [2021-12-16 09:00:28,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 3117 states have (on average 1.232595444337504) internal successors, (3842), 3120 states have internal predecessors, (3842), 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) [2021-12-16 09:00:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 3842 transitions. [2021-12-16 09:00:28,090 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 3842 transitions. Word has length 66 [2021-12-16 09:00:28,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:28,091 INFO L470 AbstractCegarLoop]: Abstraction has 3121 states and 3842 transitions. [2021-12-16 09:00:28,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.6521739130434785) internal successors, (130), 24 states have internal predecessors, (130), 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) [2021-12-16 09:00:28,091 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 3842 transitions. [2021-12-16 09:00:28,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-16 09:00:28,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:28,093 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 10, 1, 1, 1, 1] [2021-12-16 09:00:28,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:28,311 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 [2021-12-16 09:00:28,312 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:28,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:28,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1080032752, now seen corresponding path program 3 times [2021-12-16 09:00:28,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:28,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341368616] [2021-12-16 09:00:28,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:28,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:28,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:28,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341368616] [2021-12-16 09:00:28,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341368616] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:28,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183334489] [2021-12-16 09:00:28,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:00:28,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:28,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:28,391 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) [2021-12-16 09:00:28,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 09:00:28,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-16 09:00:28,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:28,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-16 09:00:28,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:28,534 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:28,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:28,745 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 320 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:28,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183334489] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:28,745 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:28,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-16 09:00:28,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397067616] [2021-12-16 09:00:28,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:28,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-16 09:00:28,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:28,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-16 09:00:28,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:00:28,747 INFO L87 Difference]: Start difference. First operand 3121 states and 3842 transitions. Second operand has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 24 states have internal predecessors, (134), 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) [2021-12-16 09:00:28,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:28,962 INFO L93 Difference]: Finished difference Result 12257 states and 15589 transitions. [2021-12-16 09:00:28,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 09:00:28,963 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 24 states have internal predecessors, (134), 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 68 [2021-12-16 09:00:28,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:28,988 INFO L225 Difference]: With dead ends: 12257 [2021-12-16 09:00:28,989 INFO L226 Difference]: Without dead ends: 12256 [2021-12-16 09:00:28,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-16 09:00:28,994 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 226 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:28,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 172 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:00:29,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12256 states. [2021-12-16 09:00:29,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12256 to 12248. [2021-12-16 09:00:29,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12248 states, 12244 states have (on average 1.1621202221496243) internal successors, (14229), 12247 states have internal predecessors, (14229), 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) [2021-12-16 09:00:29,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12248 states to 12248 states and 14229 transitions. [2021-12-16 09:00:29,296 INFO L78 Accepts]: Start accepts. Automaton has 12248 states and 14229 transitions. Word has length 68 [2021-12-16 09:00:29,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:29,297 INFO L470 AbstractCegarLoop]: Abstraction has 12248 states and 14229 transitions. [2021-12-16 09:00:29,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 5.826086956521739) internal successors, (134), 24 states have internal predecessors, (134), 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) [2021-12-16 09:00:29,297 INFO L276 IsEmpty]: Start isEmpty. Operand 12248 states and 14229 transitions. [2021-12-16 09:00:29,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-16 09:00:29,302 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:29,303 INFO L514 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 1, 1, 1, 1] [2021-12-16 09:00:29,321 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:29,521 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 [2021-12-16 09:00:29,521 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:29,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:29,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1812968066, now seen corresponding path program 3 times [2021-12-16 09:00:29,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:29,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039742568] [2021-12-16 09:00:29,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:29,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:29,678 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:29,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:29,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039742568] [2021-12-16 09:00:29,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039742568] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:29,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1407018561] [2021-12-16 09:00:29,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-16 09:00:29,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:29,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:29,680 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) [2021-12-16 09:00:29,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 09:00:29,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-12-16 09:00:29,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:29,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-16 09:00:29,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:29,866 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:29,866 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:30,268 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 602 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:30,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1407018561] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:30,269 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:30,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2021-12-16 09:00:30,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913499375] [2021-12-16 09:00:30,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:30,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-16 09:00:30,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:30,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-16 09:00:30,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-12-16 09:00:30,271 INFO L87 Difference]: Start difference. First operand 12248 states and 14229 transitions. Second operand has 32 states, 31 states have (on average 5.806451612903226) internal successors, (180), 32 states have internal predecessors, (180), 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) [2021-12-16 09:00:30,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:30,753 INFO L93 Difference]: Finished difference Result 28887 states and 34639 transitions. [2021-12-16 09:00:30,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-16 09:00:30,753 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.806451612903226) internal successors, (180), 32 states have internal predecessors, (180), 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 91 [2021-12-16 09:00:30,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:30,809 INFO L225 Difference]: With dead ends: 28887 [2021-12-16 09:00:30,809 INFO L226 Difference]: Without dead ends: 28886 [2021-12-16 09:00:30,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=496, Invalid=496, Unknown=0, NotChecked=0, Total=992 [2021-12-16 09:00:30,820 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 323 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:30,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 194 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 09:00:30,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28886 states. [2021-12-16 09:00:31,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28886 to 14083. [2021-12-16 09:00:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14083 states, 14079 states have (on average 1.1735208466510405) internal successors, (16522), 14082 states have internal predecessors, (16522), 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) [2021-12-16 09:00:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14083 states to 14083 states and 16522 transitions. [2021-12-16 09:00:31,266 INFO L78 Accepts]: Start accepts. Automaton has 14083 states and 16522 transitions. Word has length 91 [2021-12-16 09:00:31,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:31,266 INFO L470 AbstractCegarLoop]: Abstraction has 14083 states and 16522 transitions. [2021-12-16 09:00:31,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.806451612903226) internal successors, (180), 32 states have internal predecessors, (180), 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) [2021-12-16 09:00:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 14083 states and 16522 transitions. [2021-12-16 09:00:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2021-12-16 09:00:31,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:31,316 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 1, 1, 1, 1] [2021-12-16 09:00:31,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:31,527 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 [2021-12-16 09:00:31,527 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:31,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:31,528 INFO L85 PathProgramCache]: Analyzing trace with hash 924663923, now seen corresponding path program 4 times [2021-12-16 09:00:31,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:31,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53282441] [2021-12-16 09:00:31,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:31,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:31,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:31,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:31,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53282441] [2021-12-16 09:00:31,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53282441] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:31,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109039657] [2021-12-16 09:00:31,779 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:00:31,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:31,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:31,780 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) [2021-12-16 09:00:31,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 09:00:31,815 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:00:31,815 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:31,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-16 09:00:31,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:32,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:32,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:32,706 INFO L134 CoverageAnalysis]: Checked inductivity of 1452 backedges. 0 proven. 1452 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:32,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109039657] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:32,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:32,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-16 09:00:32,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740460750] [2021-12-16 09:00:32,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:32,707 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-16 09:00:32,707 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:32,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-16 09:00:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-16 09:00:32,708 INFO L87 Difference]: Start difference. First operand 14083 states and 16522 transitions. Second operand has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 48 states have internal predecessors, (274), 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) [2021-12-16 09:00:33,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:33,460 INFO L93 Difference]: Finished difference Result 40092 states and 50721 transitions. [2021-12-16 09:00:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-16 09:00:33,461 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 48 states have internal predecessors, (274), 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 138 [2021-12-16 09:00:33,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:33,514 INFO L225 Difference]: With dead ends: 40092 [2021-12-16 09:00:33,515 INFO L226 Difference]: Without dead ends: 40090 [2021-12-16 09:00:33,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-16 09:00:33,527 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 551 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:33,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 328 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 09:00:33,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40090 states. [2021-12-16 09:00:34,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40090 to 18566. [2021-12-16 09:00:34,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18566 states, 18562 states have (on average 1.1925439069065833) internal successors, (22136), 18565 states have internal predecessors, (22136), 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) [2021-12-16 09:00:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18566 states to 18566 states and 22136 transitions. [2021-12-16 09:00:34,050 INFO L78 Accepts]: Start accepts. Automaton has 18566 states and 22136 transitions. Word has length 138 [2021-12-16 09:00:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:34,050 INFO L470 AbstractCegarLoop]: Abstraction has 18566 states and 22136 transitions. [2021-12-16 09:00:34,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.829787234042553) internal successors, (274), 48 states have internal predecessors, (274), 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) [2021-12-16 09:00:34,051 INFO L276 IsEmpty]: Start isEmpty. Operand 18566 states and 22136 transitions. [2021-12-16 09:00:34,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-16 09:00:34,066 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:34,066 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 22, 1, 1, 1, 1] [2021-12-16 09:00:34,084 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:34,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-16 09:00:34,282 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:34,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:34,282 INFO L85 PathProgramCache]: Analyzing trace with hash -456198628, now seen corresponding path program 4 times [2021-12-16 09:00:34,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:34,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888286446] [2021-12-16 09:00:34,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:34,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:34,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:34,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:34,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888286446] [2021-12-16 09:00:34,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888286446] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:34,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1524757905] [2021-12-16 09:00:34,501 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:00:34,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:34,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:34,502 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:00:34,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 09:00:34,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:00:34,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:34,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-16 09:00:34,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:34,757 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:34,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:35,406 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 0 proven. 1496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:35,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1524757905] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:35,406 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:35,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-16 09:00:35,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382734701] [2021-12-16 09:00:35,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:35,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-16 09:00:35,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:35,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-16 09:00:35,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-16 09:00:35,408 INFO L87 Difference]: Start difference. First operand 18566 states and 22136 transitions. Second operand has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 48 states have internal predecessors, (278), 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) [2021-12-16 09:00:37,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:37,116 INFO L93 Difference]: Finished difference Result 94606 states and 118669 transitions. [2021-12-16 09:00:37,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-16 09:00:37,116 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 48 states have internal predecessors, (278), 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 140 [2021-12-16 09:00:37,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:37,230 INFO L225 Difference]: With dead ends: 94606 [2021-12-16 09:00:37,231 INFO L226 Difference]: Without dead ends: 94605 [2021-12-16 09:00:37,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-16 09:00:37,251 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 451 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:37,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 326 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 09:00:37,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94605 states. [2021-12-16 09:00:39,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94605 to 94589. [2021-12-16 09:00:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94589 states, 94585 states have (on average 1.144219485119205) internal successors, (108226), 94588 states have internal predecessors, (108226), 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) [2021-12-16 09:00:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94589 states to 94589 states and 108226 transitions. [2021-12-16 09:00:39,643 INFO L78 Accepts]: Start accepts. Automaton has 94589 states and 108226 transitions. Word has length 140 [2021-12-16 09:00:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:39,644 INFO L470 AbstractCegarLoop]: Abstraction has 94589 states and 108226 transitions. [2021-12-16 09:00:39,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 5.914893617021277) internal successors, (278), 48 states have internal predecessors, (278), 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) [2021-12-16 09:00:39,644 INFO L276 IsEmpty]: Start isEmpty. Operand 94589 states and 108226 transitions. [2021-12-16 09:00:39,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-16 09:00:39,689 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:39,689 INFO L514 BasicCegarLoop]: trace histogram [31, 31, 31, 30, 30, 30, 1, 1, 1, 1] [2021-12-16 09:00:39,715 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:39,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-16 09:00:39,906 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:39,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:39,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1942998190, now seen corresponding path program 4 times [2021-12-16 09:00:39,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:39,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667548855] [2021-12-16 09:00:39,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:39,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:40,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:40,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:40,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667548855] [2021-12-16 09:00:40,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667548855] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:40,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736620678] [2021-12-16 09:00:40,515 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-16 09:00:40,515 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:40,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:40,524 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:00:40,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 09:00:40,575 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-16 09:00:40,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:40,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 411 conjuncts, 32 conjunts are in the unsatisfiable core [2021-12-16 09:00:40,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:40,880 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:40,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:42,030 INFO L134 CoverageAnalysis]: Checked inductivity of 2730 backedges. 0 proven. 2730 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:42,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736620678] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:42,030 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:42,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 32, 32] total 63 [2021-12-16 09:00:42,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480447917] [2021-12-16 09:00:42,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:42,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-16 09:00:42,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:42,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-16 09:00:42,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-12-16 09:00:42,033 INFO L87 Difference]: Start difference. First operand 94589 states and 108226 transitions. Second operand has 64 states, 63 states have (on average 5.904761904761905) internal successors, (372), 64 states have internal predecessors, (372), 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) [2021-12-16 09:00:46,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:00:46,608 INFO L93 Difference]: Finished difference Result 289856 states and 338922 transitions. [2021-12-16 09:00:46,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-12-16 09:00:46,611 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 63 states have (on average 5.904761904761905) internal successors, (372), 64 states have internal predecessors, (372), 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 187 [2021-12-16 09:00:46,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:00:46,938 INFO L225 Difference]: With dead ends: 289856 [2021-12-16 09:00:46,939 INFO L226 Difference]: Without dead ends: 289855 [2021-12-16 09:00:46,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 342 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2016, Invalid=2016, Unknown=0, NotChecked=0, Total=4032 [2021-12-16 09:00:46,988 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 724 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 09:00:46,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 388 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [610 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 09:00:47,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289855 states. [2021-12-16 09:00:52,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289855 to 102720. [2021-12-16 09:00:52,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102720 states, 102716 states have (on average 1.15056076950037) internal successors, (118181), 102719 states have internal predecessors, (118181), 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) [2021-12-16 09:00:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102720 states to 102720 states and 118181 transitions. [2021-12-16 09:00:52,652 INFO L78 Accepts]: Start accepts. Automaton has 102720 states and 118181 transitions. Word has length 187 [2021-12-16 09:00:52,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:00:52,653 INFO L470 AbstractCegarLoop]: Abstraction has 102720 states and 118181 transitions. [2021-12-16 09:00:52,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 63 states have (on average 5.904761904761905) internal successors, (372), 64 states have internal predecessors, (372), 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) [2021-12-16 09:00:52,653 INFO L276 IsEmpty]: Start isEmpty. Operand 102720 states and 118181 transitions. [2021-12-16 09:00:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-12-16 09:00:52,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:00:52,912 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 46, 46, 46, 46, 1, 1, 1, 1] [2021-12-16 09:00:52,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 09:00:53,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-16 09:00:53,127 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:00:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:00:53,128 INFO L85 PathProgramCache]: Analyzing trace with hash -2065071413, now seen corresponding path program 5 times [2021-12-16 09:00:53,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:00:53,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119089898] [2021-12-16 09:00:53,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:00:53,128 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:00:53,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:00:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:53,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:00:53,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119089898] [2021-12-16 09:00:53,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119089898] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:00:53,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713994438] [2021-12-16 09:00:53,891 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 09:00:53,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:00:53,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:00:53,892 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:00:53,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 09:00:53,997 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-16 09:00:53,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:00:53,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 571 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-16 09:00:54,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:00:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:54,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:00:56,663 INFO L134 CoverageAnalysis]: Checked inductivity of 6348 backedges. 0 proven. 6348 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:00:56,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713994438] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:00:56,663 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:00:56,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-16 09:00:56,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445208168] [2021-12-16 09:00:56,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:00:56,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-16 09:00:56,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:00:56,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-16 09:00:56,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-16 09:00:56,668 INFO L87 Difference]: Start difference. First operand 102720 states and 118181 transitions. Second operand has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 96 states have internal predecessors, (562), 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) [2021-12-16 09:01:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 09:01:02,877 INFO L93 Difference]: Finished difference Result 321844 states and 394478 transitions. [2021-12-16 09:01:02,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-16 09:01:02,878 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 96 states have internal predecessors, (562), 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 282 [2021-12-16 09:01:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 09:01:03,418 INFO L225 Difference]: With dead ends: 321844 [2021-12-16 09:01:03,419 INFO L226 Difference]: Without dead ends: 321842 [2021-12-16 09:01:03,482 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 516 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-16 09:01:03,483 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 1124 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 805 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 805 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 09:01:03,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 699 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [805 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 09:01:03,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321842 states. [2021-12-16 09:01:09,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321842 to 122487. [2021-12-16 09:01:09,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122487 states, 122483 states have (on average 1.1643575026738404) internal successors, (142614), 122486 states have internal predecessors, (142614), 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) [2021-12-16 09:01:09,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122487 states to 122487 states and 142614 transitions. [2021-12-16 09:01:09,640 INFO L78 Accepts]: Start accepts. Automaton has 122487 states and 142614 transitions. Word has length 282 [2021-12-16 09:01:09,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 09:01:09,641 INFO L470 AbstractCegarLoop]: Abstraction has 122487 states and 142614 transitions. [2021-12-16 09:01:09,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 5.91578947368421) internal successors, (562), 96 states have internal predecessors, (562), 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) [2021-12-16 09:01:09,641 INFO L276 IsEmpty]: Start isEmpty. Operand 122487 states and 142614 transitions. [2021-12-16 09:01:09,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-16 09:01:09,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 09:01:09,722 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 46, 46, 1, 1, 1, 1] [2021-12-16 09:01:09,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-16 09:01:09,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:09,939 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2021-12-16 09:01:09,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 09:01:09,940 INFO L85 PathProgramCache]: Analyzing trace with hash -258735500, now seen corresponding path program 5 times [2021-12-16 09:01:09,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 09:01:09,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64073651] [2021-12-16 09:01:09,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 09:01:09,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 09:01:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 09:01:10,740 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:01:10,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 09:01:10,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64073651] [2021-12-16 09:01:10,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64073651] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 09:01:10,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330518157] [2021-12-16 09:01:10,741 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-16 09:01:10,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 09:01:10,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 09:01:10,742 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 09:01:10,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-16 09:01:10,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-16 09:01:10,986 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 09:01:10,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-16 09:01:10,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 09:01:11,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:01:11,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 09:01:13,494 INFO L134 CoverageAnalysis]: Checked inductivity of 6440 backedges. 0 proven. 6440 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 09:01:13,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330518157] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 09:01:13,495 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 09:01:13,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-16 09:01:13,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902708620] [2021-12-16 09:01:13,495 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 09:01:13,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-16 09:01:13,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 09:01:13,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-16 09:01:13,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-16 09:01:13,499 INFO L87 Difference]: Start difference. First operand 122487 states and 142614 transitions. Second operand has 96 states, 95 states have (on average 5.957894736842105) internal successors, (566), 96 states have internal predecessors, (566), 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)