./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version ae007674 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/HarrisLalNoriRajamani-SAS2010-Fig1.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 de331d1f778f147a4d32c0286c0018cb5b5cf61f2b6c0952b6bed68b0f715eaf --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 08:43:32,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 08:43:32,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 08:43:32,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 08:43:32,031 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 08:43:32,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 08:43:32,035 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 08:43:32,039 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 08:43:32,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 08:43:32,044 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 08:43:32,045 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 08:43:32,047 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 08:43:32,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 08:43:32,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 08:43:32,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 08:43:32,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 08:43:32,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 08:43:32,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 08:43:32,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 08:43:32,059 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 08:43:32,060 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 08:43:32,061 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 08:43:32,062 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 08:43:32,063 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 08:43:32,066 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 08:43:32,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 08:43:32,068 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 08:43:32,069 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 08:43:32,070 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 08:43:32,070 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 08:43:32,070 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 08:43:32,071 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 08:43:32,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 08:43:32,072 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 08:43:32,073 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 08:43:32,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 08:43:32,074 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 08:43:32,074 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 08:43:32,074 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 08:43:32,075 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 08:43:32,076 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 08:43:32,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-12-28 08:43:32,109 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 08:43:32,110 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 08:43:32,110 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 08:43:32,111 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 08:43:32,111 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 08:43:32,111 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 08:43:32,112 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 08:43:32,113 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 08:43:32,113 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 08:43:32,113 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 08:43:32,113 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 08:43:32,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 08:43:32,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 08:43:32,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 08:43:32,114 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 08:43:32,114 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 08:43:32,114 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-12-28 08:43:32,114 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 08:43:32,115 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 08:43:32,115 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 08:43:32,115 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 08:43:32,115 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 08:43:32,115 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 08:43:32,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:43:32,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 08:43:32,116 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 08:43:32,116 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 08:43:32,116 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 08:43:32,116 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 08:43:32,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 08:43:32,116 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> de331d1f778f147a4d32c0286c0018cb5b5cf61f2b6c0952b6bed68b0f715eaf [2021-12-28 08:43:32,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 08:43:32,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 08:43:32,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 08:43:32,509 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 08:43:32,510 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 08:43:32,511 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2021-12-28 08:43:32,559 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3789552e2/3f75c2c62dd246e1b6ca721884e44498/FLAGf6eb7ee18 [2021-12-28 08:43:32,920 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 08:43:32,920 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted-lit/HarrisLalNoriRajamani-SAS2010-Fig1.c [2021-12-28 08:43:32,924 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3789552e2/3f75c2c62dd246e1b6ca721884e44498/FLAGf6eb7ee18 [2021-12-28 08:43:33,312 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3789552e2/3f75c2c62dd246e1b6ca721884e44498 [2021-12-28 08:43:33,314 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 08:43:33,315 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 08:43:33,316 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 08:43:33,316 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 08:43:33,319 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 08:43:33,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49ed64bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33, skipping insertion in model container [2021-12-28 08:43:33,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 08:43:33,333 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 08:43:33,409 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:43:33,411 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 08:43:33,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 08:43:33,425 INFO L208 MainTranslator]: Completed translation [2021-12-28 08:43:33,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33 WrapperNode [2021-12-28 08:43:33,426 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 08:43:33,427 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 08:43:33,427 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 08:43:33,427 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 08:43:33,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,442 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 8 [2021-12-28 08:43:33,442 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 08:43:33,442 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 08:43:33,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 08:43:33,443 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 08:43:33,454 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,455 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,457 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,465 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,466 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,466 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 08:43:33,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 08:43:33,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 08:43:33,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 08:43:33,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (1/1) ... [2021-12-28 08:43:33,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 08:43:33,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:33,537 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) [2021-12-28 08:43:33,553 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 [2021-12-28 08:43:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-12-28 08:43:33,560 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-12-28 08:43:33,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 08:43:33,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 08:43:33,599 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 08:43:33,600 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 08:43:33,727 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 08:43:33,732 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 08:43:33,733 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-28 08:43:33,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:43:33 BoogieIcfgContainer [2021-12-28 08:43:33,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 08:43:33,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 08:43:33,735 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 08:43:33,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 08:43:33,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 08:43:33" (1/3) ... [2021-12-28 08:43:33,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef7e912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:43:33, skipping insertion in model container [2021-12-28 08:43:33,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 08:43:33" (2/3) ... [2021-12-28 08:43:33,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ef7e912 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 08:43:33, skipping insertion in model container [2021-12-28 08:43:33,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 08:43:33" (3/3) ... [2021-12-28 08:43:33,740 INFO L111 eAbstractionObserver]: Analyzing ICFG HarrisLalNoriRajamani-SAS2010-Fig1.c [2021-12-28 08:43:33,743 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 08:43:33,744 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-12-28 08:43:33,780 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 08:43:33,790 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 [2021-12-28 08:43:33,790 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-28 08:43:33,803 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-12-28 08:43:33,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-28 08:43:33,813 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:33,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:33,815 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:33,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:33,819 INFO L85 PathProgramCache]: Analyzing trace with hash 996822992, now seen corresponding path program 1 times [2021-12-28 08:43:33,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:33,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527528736] [2021-12-28 08:43:33,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:33,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:33,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:33,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:33,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527528736] [2021-12-28 08:43:33,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527528736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:33,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:33,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:43:33,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975467750] [2021-12-28 08:43:33,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:33,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:43:33,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:43:34,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:43:34,026 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.7894736842105263) internal successors, (34), 28 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:34,061 INFO L93 Difference]: Finished difference Result 68 states and 87 transitions. [2021-12-28 08:43:34,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:43:34,063 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-12-28 08:43:34,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:34,069 INFO L225 Difference]: With dead ends: 68 [2021-12-28 08:43:34,069 INFO L226 Difference]: Without dead ends: 41 [2021-12-28 08:43:34,072 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 [2021-12-28 08:43:34,074 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 19 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:34,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 51 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-12-28 08:43:34,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2021-12-28 08:43:34,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36 states, 26 states have (on average 1.6923076923076923) internal successors, (44), 34 states have internal predecessors, (44), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 46 transitions. [2021-12-28 08:43:34,101 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 46 transitions. Word has length 8 [2021-12-28 08:43:34,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:34,102 INFO L470 AbstractCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-12-28 08:43:34,102 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,102 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 46 transitions. [2021-12-28 08:43:34,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-28 08:43:34,103 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,103 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:34,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 08:43:34,103 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,104 INFO L85 PathProgramCache]: Analyzing trace with hash 836741727, now seen corresponding path program 1 times [2021-12-28 08:43:34,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555725625] [2021-12-28 08:43:34,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:34,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:34,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555725625] [2021-12-28 08:43:34,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555725625] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:34,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:34,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 08:43:34,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679824809] [2021-12-28 08:43:34,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:34,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 08:43:34,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 08:43:34,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 08:43:34,130 INFO L87 Difference]: Start difference. First operand 36 states and 46 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:34,146 INFO L93 Difference]: Finished difference Result 57 states and 75 transitions. [2021-12-28 08:43:34,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 08:43:34,147 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-28 08:43:34,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:34,147 INFO L225 Difference]: With dead ends: 57 [2021-12-28 08:43:34,148 INFO L226 Difference]: Without dead ends: 55 [2021-12-28 08:43:34,148 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 [2021-12-28 08:43:34,149 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 15 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:34,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 37 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:34,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-28 08:43:34,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 51. [2021-12-28 08:43:34,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 42 states have (on average 1.6666666666666667) internal successors, (70), 49 states have internal predecessors, (70), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2021-12-28 08:43:34,155 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 9 [2021-12-28 08:43:34,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:34,155 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2021-12-28 08:43:34,156 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,156 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2021-12-28 08:43:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 08:43:34,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:34,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 08:43:34,157 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,157 INFO L85 PathProgramCache]: Analyzing trace with hash 169143521, now seen corresponding path program 1 times [2021-12-28 08:43:34,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426108830] [2021-12-28 08:43:34,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:34,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426108830] [2021-12-28 08:43:34,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426108830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:34,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:34,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:43:34,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289343815] [2021-12-28 08:43:34,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:34,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:43:34,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:43:34,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:43:34,195 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:34,226 INFO L93 Difference]: Finished difference Result 66 states and 94 transitions. [2021-12-28 08:43:34,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:43:34,227 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-28 08:43:34,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:34,228 INFO L225 Difference]: With dead ends: 66 [2021-12-28 08:43:34,228 INFO L226 Difference]: Without dead ends: 65 [2021-12-28 08:43:34,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:43:34,229 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:34,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 35 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:34,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-12-28 08:43:34,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 57. [2021-12-28 08:43:34,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.625) internal successors, (78), 55 states have internal predecessors, (78), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 80 transitions. [2021-12-28 08:43:34,236 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 80 transitions. Word has length 10 [2021-12-28 08:43:34,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:34,236 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 80 transitions. [2021-12-28 08:43:34,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,237 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 80 transitions. [2021-12-28 08:43:34,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 08:43:34,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,237 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:34,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 08:43:34,238 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:34,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,238 INFO L85 PathProgramCache]: Analyzing trace with hash 169143170, now seen corresponding path program 1 times [2021-12-28 08:43:34,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113262526] [2021-12-28 08:43:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,239 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:34,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:34,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113262526] [2021-12-28 08:43:34,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113262526] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:34,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:34,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:43:34,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157710040] [2021-12-28 08:43:34,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:34,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:43:34,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:43:34,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:43:34,274 INFO L87 Difference]: Start difference. First operand 57 states and 80 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:34,314 INFO L93 Difference]: Finished difference Result 60 states and 80 transitions. [2021-12-28 08:43:34,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:43:34,315 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-12-28 08:43:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:34,315 INFO L225 Difference]: With dead ends: 60 [2021-12-28 08:43:34,316 INFO L226 Difference]: Without dead ends: 59 [2021-12-28 08:43:34,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:43:34,317 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 42 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:34,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 35 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:34,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-12-28 08:43:34,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-12-28 08:43:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 55 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2021-12-28 08:43:34,323 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 78 transitions. Word has length 10 [2021-12-28 08:43:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:34,323 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 78 transitions. [2021-12-28 08:43:34,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 78 transitions. [2021-12-28 08:43:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 08:43:34,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,324 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:34,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 08:43:34,325 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting fErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:34,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash 948481931, now seen corresponding path program 1 times [2021-12-28 08:43:34,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103132134] [2021-12-28 08:43:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:34,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103132134] [2021-12-28 08:43:34,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103132134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:34,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:34,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:43:34,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103700195] [2021-12-28 08:43:34,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:34,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:43:34,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:43:34,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:43:34,365 INFO L87 Difference]: Start difference. First operand 57 states and 78 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:34,413 INFO L93 Difference]: Finished difference Result 109 states and 150 transitions. [2021-12-28 08:43:34,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 08:43:34,414 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-28 08:43:34,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:34,415 INFO L225 Difference]: With dead ends: 109 [2021-12-28 08:43:34,415 INFO L226 Difference]: Without dead ends: 108 [2021-12-28 08:43:34,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 08:43:34,416 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 40 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:34,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 82 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:34,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2021-12-28 08:43:34,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 102. [2021-12-28 08:43:34,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 93 states have (on average 1.5483870967741935) internal successors, (144), 99 states have internal predecessors, (144), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 146 transitions. [2021-12-28 08:43:34,425 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 146 transitions. Word has length 11 [2021-12-28 08:43:34,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:34,426 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 146 transitions. [2021-12-28 08:43:34,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,426 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 146 transitions. [2021-12-28 08:43:34,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 08:43:34,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,427 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:34,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 08:43:34,427 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:34,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,428 INFO L85 PathProgramCache]: Analyzing trace with hash 948471040, now seen corresponding path program 1 times [2021-12-28 08:43:34,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093041775] [2021-12-28 08:43:34,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:34,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093041775] [2021-12-28 08:43:34,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093041775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:34,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:34,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:43:34,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136957862] [2021-12-28 08:43:34,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:34,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:43:34,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:43:34,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:43:34,458 INFO L87 Difference]: Start difference. First operand 102 states and 146 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:34,491 INFO L93 Difference]: Finished difference Result 110 states and 148 transitions. [2021-12-28 08:43:34,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 08:43:34,491 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-28 08:43:34,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:34,492 INFO L225 Difference]: With dead ends: 110 [2021-12-28 08:43:34,492 INFO L226 Difference]: Without dead ends: 109 [2021-12-28 08:43:34,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 08:43:34,494 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 40 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:34,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 83 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:34,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-12-28 08:43:34,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102. [2021-12-28 08:43:34,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 93 states have (on average 1.5053763440860215) internal successors, (140), 99 states have internal predecessors, (140), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 142 transitions. [2021-12-28 08:43:34,501 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 142 transitions. Word has length 11 [2021-12-28 08:43:34,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:34,501 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 142 transitions. [2021-12-28 08:43:34,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,501 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 142 transitions. [2021-12-28 08:43:34,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 08:43:34,502 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,502 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:34,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 08:43:34,502 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:34,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,503 INFO L85 PathProgramCache]: Analyzing trace with hash 949916673, now seen corresponding path program 1 times [2021-12-28 08:43:34,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570364907] [2021-12-28 08:43:34,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,524 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:34,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570364907] [2021-12-28 08:43:34,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570364907] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:34,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758408497] [2021-12-28 08:43:34,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,525 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:34,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:34,526 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) [2021-12-28 08:43:34,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 08:43:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:34,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 34 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 08:43:34,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:34,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:43:34,686 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:34,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758408497] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:43:34,686 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:43:34,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-28 08:43:34,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46414941] [2021-12-28 08:43:34,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:43:34,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 08:43:34,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:34,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 08:43:34,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:43:34,690 INFO L87 Difference]: Start difference. First operand 102 states and 142 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:34,748 INFO L93 Difference]: Finished difference Result 251 states and 352 transitions. [2021-12-28 08:43:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 08:43:34,749 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-28 08:43:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:34,750 INFO L225 Difference]: With dead ends: 251 [2021-12-28 08:43:34,753 INFO L226 Difference]: Without dead ends: 249 [2021-12-28 08:43:34,753 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:43:34,755 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 142 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:34,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 70 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:43:34,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2021-12-28 08:43:34,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 120. [2021-12-28 08:43:34,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 111 states have (on average 1.4774774774774775) internal successors, (164), 117 states have internal predecessors, (164), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 166 transitions. [2021-12-28 08:43:34,774 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 166 transitions. Word has length 11 [2021-12-28 08:43:34,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:34,774 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 166 transitions. [2021-12-28 08:43:34,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:34,774 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 166 transitions. [2021-12-28 08:43:34,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 08:43:34,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:34,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:34,795 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 08:43:34,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:34,995 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting fErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:34,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:34,996 INFO L85 PathProgramCache]: Analyzing trace with hash -988260788, now seen corresponding path program 1 times [2021-12-28 08:43:34,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:34,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826485989] [2021-12-28 08:43:34,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:34,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:35,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:35,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:35,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:35,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826485989] [2021-12-28 08:43:35,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826485989] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:35,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:35,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:43:35,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734967933] [2021-12-28 08:43:35,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:35,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:43:35,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:35,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:43:35,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:43:35,039 INFO L87 Difference]: Start difference. First operand 120 states and 166 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:35,059 INFO L93 Difference]: Finished difference Result 120 states and 166 transitions. [2021-12-28 08:43:35,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:43:35,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-28 08:43:35,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:35,060 INFO L225 Difference]: With dead ends: 120 [2021-12-28 08:43:35,061 INFO L226 Difference]: Without dead ends: 119 [2021-12-28 08:43:35,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 08:43:35,062 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:35,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 45 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:35,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2021-12-28 08:43:35,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2021-12-28 08:43:35,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 111 states have (on average 1.4414414414414414) internal successors, (160), 116 states have internal predecessors, (160), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2021-12-28 08:43:35,067 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 11 [2021-12-28 08:43:35,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:35,067 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2021-12-28 08:43:35,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,068 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2021-12-28 08:43:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-28 08:43:35,068 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:35,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:35,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 08:43:35,069 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:35,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:35,069 INFO L85 PathProgramCache]: Analyzing trace with hash -988271679, now seen corresponding path program 1 times [2021-12-28 08:43:35,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:35,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43542620] [2021-12-28 08:43:35,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:35,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:35,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:35,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:35,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:35,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43542620] [2021-12-28 08:43:35,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43542620] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:35,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:35,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 08:43:35,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192375830] [2021-12-28 08:43:35,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:35,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:43:35,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:35,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:43:35,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 08:43:35,094 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:35,111 INFO L93 Difference]: Finished difference Result 123 states and 166 transitions. [2021-12-28 08:43:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:43:35,111 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2021-12-28 08:43:35,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:35,112 INFO L225 Difference]: With dead ends: 123 [2021-12-28 08:43:35,112 INFO L226 Difference]: Without dead ends: 122 [2021-12-28 08:43:35,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 08:43:35,113 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 40 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:35,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 45 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:35,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2021-12-28 08:43:35,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 64. [2021-12-28 08:43:35,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 57 states have (on average 1.4035087719298245) internal successors, (80), 62 states have internal predecessors, (80), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 82 transitions. [2021-12-28 08:43:35,117 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 82 transitions. Word has length 11 [2021-12-28 08:43:35,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:35,117 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 82 transitions. [2021-12-28 08:43:35,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,117 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 82 transitions. [2021-12-28 08:43:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-28 08:43:35,118 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:35,118 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:35,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 08:43:35,118 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting fErr6ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:35,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:35,119 INFO L85 PathProgramCache]: Analyzing trace with hash -364575919, now seen corresponding path program 1 times [2021-12-28 08:43:35,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:35,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028403679] [2021-12-28 08:43:35,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:35,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:35,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:35,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:35,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:35,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028403679] [2021-12-28 08:43:35,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028403679] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:35,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1402888848] [2021-12-28 08:43:35,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:35,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:35,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:35,152 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) [2021-12-28 08:43:35,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 08:43:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:35,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 08:43:35,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:35,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 08:43:35,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1402888848] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:35,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 08:43:35,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-12-28 08:43:35,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202836409] [2021-12-28 08:43:35,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:35,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:43:35,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:43:35,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-28 08:43:35,285 INFO L87 Difference]: Start difference. First operand 64 states and 82 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:35,317 INFO L93 Difference]: Finished difference Result 83 states and 106 transitions. [2021-12-28 08:43:35,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:43:35,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-12-28 08:43:35,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:35,318 INFO L225 Difference]: With dead ends: 83 [2021-12-28 08:43:35,318 INFO L226 Difference]: Without dead ends: 82 [2021-12-28 08:43:35,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-28 08:43:35,319 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 32 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:35,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 48 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:35,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-12-28 08:43:35,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 57. [2021-12-28 08:43:35,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.3333333333333333) internal successors, (68), 55 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 70 transitions. [2021-12-28 08:43:35,329 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 70 transitions. Word has length 14 [2021-12-28 08:43:35,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:35,329 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 70 transitions. [2021-12-28 08:43:35,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,329 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 70 transitions. [2021-12-28 08:43:35,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-28 08:43:35,330 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:35,330 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:35,347 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 08:43:35,547 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,SelfDestructingSolverStorable9 [2021-12-28 08:43:35,547 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:35,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:35,548 INFO L85 PathProgramCache]: Analyzing trace with hash -723415909, now seen corresponding path program 1 times [2021-12-28 08:43:35,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:35,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732498373] [2021-12-28 08:43:35,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:35,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:35,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:35,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:35,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732498373] [2021-12-28 08:43:35,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1732498373] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:35,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306144286] [2021-12-28 08:43:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:35,579 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:35,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:35,608 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) [2021-12-28 08:43:35,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 08:43:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:35,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 08:43:35,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:35,688 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:35,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 08:43:35,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306144286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:35,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 08:43:35,689 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2021-12-28 08:43:35,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416327985] [2021-12-28 08:43:35,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:35,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 08:43:35,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:35,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 08:43:35,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-28 08:43:35,690 INFO L87 Difference]: Start difference. First operand 57 states and 70 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:35,710 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2021-12-28 08:43:35,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:43:35,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-28 08:43:35,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:35,711 INFO L225 Difference]: With dead ends: 57 [2021-12-28 08:43:35,711 INFO L226 Difference]: Without dead ends: 56 [2021-12-28 08:43:35,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-12-28 08:43:35,712 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 34 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:35,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 38 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:35,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-12-28 08:43:35,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-12-28 08:43:35,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.2941176470588236) internal successors, (66), 54 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2021-12-28 08:43:35,715 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 16 [2021-12-28 08:43:35,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:35,715 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2021-12-28 08:43:35,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:35,715 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2021-12-28 08:43:35,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-28 08:43:35,716 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:35,716 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:35,736 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-28 08:43:35,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:35,932 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:35,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:35,932 INFO L85 PathProgramCache]: Analyzing trace with hash 862611913, now seen corresponding path program 1 times [2021-12-28 08:43:35,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:35,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244291075] [2021-12-28 08:43:35,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:35,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:35,967 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:35,968 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:35,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244291075] [2021-12-28 08:43:35,968 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244291075] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:35,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164989836] [2021-12-28 08:43:35,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:35,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:35,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:35,970 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) [2021-12-28 08:43:35,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 08:43:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:35,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 08:43:35,996 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:36,029 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:43:36,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:36,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164989836] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:43:36,066 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:43:36,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-28 08:43:36,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640370359] [2021-12-28 08:43:36,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:43:36,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 08:43:36,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:36,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 08:43:36,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:43:36,067 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:36,090 INFO L93 Difference]: Finished difference Result 105 states and 131 transitions. [2021-12-28 08:43:36,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-28 08:43:36,091 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-28 08:43:36,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:36,091 INFO L225 Difference]: With dead ends: 105 [2021-12-28 08:43:36,091 INFO L226 Difference]: Without dead ends: 104 [2021-12-28 08:43:36,092 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:43:36,092 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 23 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:36,093 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 62 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:36,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-12-28 08:43:36,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2021-12-28 08:43:36,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 99 states have (on average 1.2424242424242424) internal successors, (123), 102 states have internal predecessors, (123), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:36,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 125 transitions. [2021-12-28 08:43:36,097 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 125 transitions. Word has length 19 [2021-12-28 08:43:36,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:36,097 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 125 transitions. [2021-12-28 08:43:36,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.6) internal successors, (33), 6 states have internal predecessors, (33), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:36,097 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 125 transitions. [2021-12-28 08:43:36,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-28 08:43:36,098 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:36,098 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:36,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 08:43:36,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:36,315 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:36,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:36,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1297323152, now seen corresponding path program 2 times [2021-12-28 08:43:36,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:36,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533557119] [2021-12-28 08:43:36,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:36,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:36,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:36,335 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 08:43:36,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:36,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533557119] [2021-12-28 08:43:36,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533557119] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:36,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526011059] [2021-12-28 08:43:36,336 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:43:36,336 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:36,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:36,337 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) [2021-12-28 08:43:36,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 08:43:36,354 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 08:43:36,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:43:36,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 29 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-28 08:43:36,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:36,387 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 08:43:36,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:43:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-28 08:43:36,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526011059] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:43:36,422 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:43:36,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-12-28 08:43:36,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462190883] [2021-12-28 08:43:36,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:43:36,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 08:43:36,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:36,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 08:43:36,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-28 08:43:36,424 INFO L87 Difference]: Start difference. First operand 104 states and 125 transitions. Second operand has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:36,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:36,440 INFO L93 Difference]: Finished difference Result 144 states and 171 transitions. [2021-12-28 08:43:36,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 08:43:36,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-12-28 08:43:36,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:36,441 INFO L225 Difference]: With dead ends: 144 [2021-12-28 08:43:36,441 INFO L226 Difference]: Without dead ends: 143 [2021-12-28 08:43:36,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 08:43:36,442 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 34 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:36,442 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 54 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:36,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2021-12-28 08:43:36,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 102. [2021-12-28 08:43:36,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 98 states have (on average 1.2346938775510203) internal successors, (121), 100 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:36,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 123 transitions. [2021-12-28 08:43:36,445 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 123 transitions. Word has length 20 [2021-12-28 08:43:36,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:36,445 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 123 transitions. [2021-12-28 08:43:36,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.2) internal successors, (16), 6 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:36,445 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 123 transitions. [2021-12-28 08:43:36,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-12-28 08:43:36,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:36,446 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:36,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 08:43:36,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-28 08:43:36,665 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting fErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:36,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:36,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1765736444, now seen corresponding path program 1 times [2021-12-28 08:43:36,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:36,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965153585] [2021-12-28 08:43:36,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:36,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:36,718 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 08:43:36,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:36,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965153585] [2021-12-28 08:43:36,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965153585] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 08:43:36,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 08:43:36,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 08:43:36,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092962139] [2021-12-28 08:43:36,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 08:43:36,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 08:43:36,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:36,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 08:43:36,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:43:36,720 INFO L87 Difference]: Start difference. First operand 102 states and 123 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:36,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:36,731 INFO L93 Difference]: Finished difference Result 142 states and 169 transitions. [2021-12-28 08:43:36,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 08:43:36,731 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-12-28 08:43:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:36,732 INFO L225 Difference]: With dead ends: 142 [2021-12-28 08:43:36,732 INFO L226 Difference]: Without dead ends: 141 [2021-12-28 08:43:36,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 08:43:36,733 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:36,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 28 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:36,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2021-12-28 08:43:36,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 51. [2021-12-28 08:43:36,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 48 states have (on average 1.1666666666666667) internal successors, (56), 49 states have internal predecessors, (56), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 58 transitions. [2021-12-28 08:43:36,735 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 58 transitions. Word has length 24 [2021-12-28 08:43:36,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:36,735 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 58 transitions. [2021-12-28 08:43:36,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 58 transitions. [2021-12-28 08:43:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-28 08:43:36,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:36,736 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:36,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 08:43:36,737 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:36,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:36,737 INFO L85 PathProgramCache]: Analyzing trace with hash -888400098, now seen corresponding path program 2 times [2021-12-28 08:43:36,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:36,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169606000] [2021-12-28 08:43:36,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:36,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:36,778 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:36,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:36,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169606000] [2021-12-28 08:43:36,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169606000] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:36,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610916372] [2021-12-28 08:43:36,779 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 08:43:36,779 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:36,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:36,784 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) [2021-12-28 08:43:36,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 08:43:36,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 08:43:36,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:43:36,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 08:43:36,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:36,896 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:36,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:43:36,986 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:36,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610916372] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:43:36,986 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:43:36,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2021-12-28 08:43:36,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815702360] [2021-12-28 08:43:36,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:43:36,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 08:43:36,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:36,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 08:43:36,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-28 08:43:36,989 INFO L87 Difference]: Start difference. First operand 51 states and 58 transitions. Second operand has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:37,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:37,019 INFO L93 Difference]: Finished difference Result 100 states and 118 transitions. [2021-12-28 08:43:37,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 08:43:37,019 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-12-28 08:43:37,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:37,021 INFO L225 Difference]: With dead ends: 100 [2021-12-28 08:43:37,021 INFO L226 Difference]: Without dead ends: 99 [2021-12-28 08:43:37,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-12-28 08:43:37,023 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 51 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:37,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 116 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2021-12-28 08:43:37,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2021-12-28 08:43:37,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 97 states have internal predecessors, (110), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2021-12-28 08:43:37,026 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 37 [2021-12-28 08:43:37,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:37,027 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2021-12-28 08:43:37,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 12 states have internal predecessors, (69), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:37,027 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2021-12-28 08:43:37,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-28 08:43:37,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:37,030 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:37,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 08:43:37,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-28 08:43:37,248 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:37,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:37,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1781047288, now seen corresponding path program 3 times [2021-12-28 08:43:37,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:37,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501250874] [2021-12-28 08:43:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:37,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:37,382 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:37,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:37,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501250874] [2021-12-28 08:43:37,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501250874] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:37,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578049592] [2021-12-28 08:43:37,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 08:43:37,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:37,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:37,384 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) [2021-12-28 08:43:37,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 08:43:37,426 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2021-12-28 08:43:37,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:43:37,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-28 08:43:37,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:37,548 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:37,549 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:43:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:37,778 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578049592] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:43:37,778 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:43:37,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 23 [2021-12-28 08:43:37,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199957155] [2021-12-28 08:43:37,778 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:43:37,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-28 08:43:37,779 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:37,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-28 08:43:37,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-28 08:43:37,781 INFO L87 Difference]: Start difference. First operand 99 states and 112 transitions. Second operand has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 24 states have internal predecessors, (141), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:37,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:37,842 INFO L93 Difference]: Finished difference Result 196 states and 232 transitions. [2021-12-28 08:43:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-28 08:43:37,842 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 24 states have internal predecessors, (141), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2021-12-28 08:43:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:37,844 INFO L225 Difference]: With dead ends: 196 [2021-12-28 08:43:37,844 INFO L226 Difference]: Without dead ends: 195 [2021-12-28 08:43:37,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2021-12-28 08:43:37,845 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 175 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:37,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 194 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 08:43:37,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2021-12-28 08:43:37,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2021-12-28 08:43:37,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 192 states have (on average 1.1354166666666667) internal successors, (218), 193 states have internal predecessors, (218), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:37,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 220 transitions. [2021-12-28 08:43:37,849 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 220 transitions. Word has length 73 [2021-12-28 08:43:37,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:37,849 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 220 transitions. [2021-12-28 08:43:37,850 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 6.130434782608695) internal successors, (141), 24 states have internal predecessors, (141), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:37,850 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 220 transitions. [2021-12-28 08:43:37,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-28 08:43:37,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:37,851 INFO L514 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:37,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 08:43:38,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:38,067 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:38,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:38,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2085983524, now seen corresponding path program 4 times [2021-12-28 08:43:38,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:38,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292350722] [2021-12-28 08:43:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:38,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:38,467 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:38,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:38,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292350722] [2021-12-28 08:43:38,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292350722] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:38,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068396718] [2021-12-28 08:43:38,467 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 08:43:38,467 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:38,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:38,469 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) [2021-12-28 08:43:38,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 08:43:38,557 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 08:43:38,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:43:38,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 417 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-28 08:43:38,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:38,792 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:38,793 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:43:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 1518 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:39,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068396718] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:43:39,480 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:43:39,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 47 [2021-12-28 08:43:39,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680991165] [2021-12-28 08:43:39,480 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:43:39,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-28 08:43:39,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-28 08:43:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-28 08:43:39,483 INFO L87 Difference]: Start difference. First operand 195 states and 220 transitions. Second operand has 48 states, 47 states have (on average 6.0638297872340425) internal successors, (285), 48 states have internal predecessors, (285), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:39,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:39,636 INFO L93 Difference]: Finished difference Result 388 states and 460 transitions. [2021-12-28 08:43:39,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-28 08:43:39,637 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 47 states have (on average 6.0638297872340425) internal successors, (285), 48 states have internal predecessors, (285), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2021-12-28 08:43:39,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:39,638 INFO L225 Difference]: With dead ends: 388 [2021-12-28 08:43:39,638 INFO L226 Difference]: Without dead ends: 387 [2021-12-28 08:43:39,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2021-12-28 08:43:39,639 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 493 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 493 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:39,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [493 Valid, 368 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:43:39,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387 states. [2021-12-28 08:43:39,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387 to 387. [2021-12-28 08:43:39,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 387 states, 384 states have (on average 1.1302083333333333) internal successors, (434), 385 states have internal predecessors, (434), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:39,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 387 states to 387 states and 436 transitions. [2021-12-28 08:43:39,644 INFO L78 Accepts]: Start accepts. Automaton has 387 states and 436 transitions. Word has length 145 [2021-12-28 08:43:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:39,645 INFO L470 AbstractCegarLoop]: Abstraction has 387 states and 436 transitions. [2021-12-28 08:43:39,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 47 states have (on average 6.0638297872340425) internal successors, (285), 48 states have internal predecessors, (285), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 387 states and 436 transitions. [2021-12-28 08:43:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-12-28 08:43:39,647 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:39,647 INFO L514 BasicCegarLoop]: trace histogram [47, 47, 47, 47, 47, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:39,671 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 08:43:39,864 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,SelfDestructingSolverStorable16 [2021-12-28 08:43:39,864 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:39,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:39,864 INFO L85 PathProgramCache]: Analyzing trace with hash 76047492, now seen corresponding path program 5 times [2021-12-28 08:43:39,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:39,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470924637] [2021-12-28 08:43:39,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:39,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:41,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:41,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:41,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470924637] [2021-12-28 08:43:41,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470924637] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:41,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448599288] [2021-12-28 08:43:41,106 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-28 08:43:41,106 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:41,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:41,108 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) [2021-12-28 08:43:41,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 08:43:41,243 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2021-12-28 08:43:41,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:43:41,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-28 08:43:41,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:41,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:43:44,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6486 backedges. 0 proven. 6486 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:44,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448599288] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:43:44,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:43:44,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 95 [2021-12-28 08:43:44,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718355801] [2021-12-28 08:43:44,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:43:44,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2021-12-28 08:43:44,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:44,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2021-12-28 08:43:44,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-28 08:43:44,139 INFO L87 Difference]: Start difference. First operand 387 states and 436 transitions. Second operand has 96 states, 95 states have (on average 6.031578947368421) internal successors, (573), 96 states have internal predecessors, (573), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:44,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:43:44,905 INFO L93 Difference]: Finished difference Result 772 states and 916 transitions. [2021-12-28 08:43:44,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2021-12-28 08:43:44,906 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 95 states have (on average 6.031578947368421) internal successors, (573), 96 states have internal predecessors, (573), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 289 [2021-12-28 08:43:44,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:43:44,908 INFO L225 Difference]: With dead ends: 772 [2021-12-28 08:43:44,908 INFO L226 Difference]: Without dead ends: 771 [2021-12-28 08:43:44,910 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 530 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2021-12-28 08:43:44,910 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 1157 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 716 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 08:43:44,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1157 Valid, 716 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 08:43:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2021-12-28 08:43:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 771. [2021-12-28 08:43:44,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 771 states, 768 states have (on average 1.1276041666666667) internal successors, (866), 769 states have internal predecessors, (866), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:44,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 771 states to 771 states and 868 transitions. [2021-12-28 08:43:44,919 INFO L78 Accepts]: Start accepts. Automaton has 771 states and 868 transitions. Word has length 289 [2021-12-28 08:43:44,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:43:44,920 INFO L470 AbstractCegarLoop]: Abstraction has 771 states and 868 transitions. [2021-12-28 08:43:44,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 95 states have (on average 6.031578947368421) internal successors, (573), 96 states have internal predecessors, (573), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:43:44,920 INFO L276 IsEmpty]: Start isEmpty. Operand 771 states and 868 transitions. [2021-12-28 08:43:44,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 578 [2021-12-28 08:43:44,928 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:43:44,929 INFO L514 BasicCegarLoop]: trace histogram [95, 95, 95, 95, 95, 94, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:43:44,958 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-28 08:43:45,158 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,SelfDestructingSolverStorable17 [2021-12-28 08:43:45,158 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:43:45,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:43:45,159 INFO L85 PathProgramCache]: Analyzing trace with hash 1934878676, now seen corresponding path program 6 times [2021-12-28 08:43:45,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:43:45,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47587104] [2021-12-28 08:43:45,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:43:45,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:43:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:43:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:48,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:43:48,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47587104] [2021-12-28 08:43:48,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47587104] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:43:48,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267171480] [2021-12-28 08:43:48,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-28 08:43:48,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:43:48,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:43:48,356 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) [2021-12-28 08:43:48,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-28 08:43:48,700 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 95 check-sat command(s) [2021-12-28 08:43:48,701 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 08:43:48,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1641 conjuncts, 96 conjunts are in the unsatisfiable core [2021-12-28 08:43:48,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:43:49,627 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:49,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:43:55,629 INFO L134 CoverageAnalysis]: Checked inductivity of 26790 backedges. 0 proven. 26790 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:43:55,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267171480] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:43:55,629 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:43:55,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 191 [2021-12-28 08:43:55,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886623764] [2021-12-28 08:43:55,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:43:55,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 192 states [2021-12-28 08:43:55,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:43:55,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 192 interpolants. [2021-12-28 08:43:55,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-28 08:43:55,640 INFO L87 Difference]: Start difference. First operand 771 states and 868 transitions. Second operand has 192 states, 191 states have (on average 6.015706806282722) internal successors, (1149), 192 states have internal predecessors, (1149), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:44:04,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 08:44:04,808 INFO L93 Difference]: Finished difference Result 1540 states and 1828 transitions. [2021-12-28 08:44:04,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2021-12-28 08:44:04,809 INFO L78 Accepts]: Start accepts. Automaton has has 192 states, 191 states have (on average 6.015706806282722) internal successors, (1149), 192 states have internal predecessors, (1149), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 577 [2021-12-28 08:44:04,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 08:44:04,844 INFO L225 Difference]: With dead ends: 1540 [2021-12-28 08:44:04,844 INFO L226 Difference]: Without dead ends: 1539 [2021-12-28 08:44:04,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1248 GetRequests, 1058 SyntacticMatches, 0 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=18336, Invalid=18336, Unknown=0, NotChecked=0, Total=36672 [2021-12-28 08:44:04,848 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 2813 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2813 SdHoareTripleChecker+Valid, 1364 SdHoareTripleChecker+Invalid, 497 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-28 08:44:04,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2813 Valid, 1364 Invalid, 497 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-28 08:44:04,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1539 states. [2021-12-28 08:44:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1539 to 1539. [2021-12-28 08:44:04,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1539 states, 1536 states have (on average 1.1263020833333333) internal successors, (1730), 1537 states have internal predecessors, (1730), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:44:04,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1539 states to 1539 states and 1732 transitions. [2021-12-28 08:44:04,887 INFO L78 Accepts]: Start accepts. Automaton has 1539 states and 1732 transitions. Word has length 577 [2021-12-28 08:44:04,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 08:44:04,888 INFO L470 AbstractCegarLoop]: Abstraction has 1539 states and 1732 transitions. [2021-12-28 08:44:04,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 192 states, 191 states have (on average 6.015706806282722) internal successors, (1149), 192 states have internal predecessors, (1149), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 08:44:04,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1539 states and 1732 transitions. [2021-12-28 08:44:04,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1154 [2021-12-28 08:44:04,919 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 08:44:04,920 INFO L514 BasicCegarLoop]: trace histogram [191, 191, 191, 191, 191, 190, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 08:44:04,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-28 08:44:05,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:44:05,138 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting fErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [fErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, fErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (and 4 more)] === [2021-12-28 08:44:05,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 08:44:05,139 INFO L85 PathProgramCache]: Analyzing trace with hash 648621684, now seen corresponding path program 7 times [2021-12-28 08:44:05,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 08:44:05,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751269776] [2021-12-28 08:44:05,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 08:44:05,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 08:44:06,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:44:17,890 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:44:17,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 08:44:17,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751269776] [2021-12-28 08:44:17,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751269776] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 08:44:17,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469376429] [2021-12-28 08:44:17,891 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-12-28 08:44:17,891 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 08:44:17,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 08:44:17,892 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) [2021-12-28 08:44:17,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-28 08:44:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 08:44:18,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 3273 conjuncts, 192 conjunts are in the unsatisfiable core [2021-12-28 08:44:18,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 08:44:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:44:20,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 08:44:46,377 INFO L134 CoverageAnalysis]: Checked inductivity of 108870 backedges. 0 proven. 108870 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 08:44:46,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469376429] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 08:44:46,377 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 08:44:46,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [192, 192, 192] total 383 [2021-12-28 08:44:46,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059569665] [2021-12-28 08:44:46,378 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 08:44:46,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 384 states [2021-12-28 08:44:46,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 08:44:46,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 384 interpolants. [2021-12-28 08:44:46,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73536, Invalid=73536, Unknown=0, NotChecked=0, Total=147072 [2021-12-28 08:44:46,400 INFO L87 Difference]: Start difference. First operand 1539 states and 1732 transitions. Second operand has 384 states, 383 states have (on average 6.007832898172324) internal successors, (2301), 384 states have internal predecessors, (2301), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)