./Ultimate.py --spec ../sv-benchmarks/c/properties/no-overflow.prp --file ../sv-benchmarks/c/busybox-1.22.0/hostid.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5fbdf5bf 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/busybox-1.22.0/hostid.i -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 3b6e96321d82dea19b0b24b62173907aded16288 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 23:01:43,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 23:01:43,302 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 23:01:43,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 23:01:43,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 23:01:43,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 23:01:43,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 23:01:43,369 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 23:01:43,371 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 23:01:43,377 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 23:01:43,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 23:01:43,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 23:01:43,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 23:01:43,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 23:01:43,388 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 23:01:43,391 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 23:01:43,393 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 23:01:43,394 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 23:01:43,396 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 23:01:43,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 23:01:43,403 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 23:01:43,404 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 23:01:43,405 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 23:01:43,407 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 23:01:43,411 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 23:01:43,412 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 23:01:43,412 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 23:01:43,414 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 23:01:43,414 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 23:01:43,415 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 23:01:43,416 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 23:01:43,416 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 23:01:43,418 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 23:01:43,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 23:01:43,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 23:01:43,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 23:01:43,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 23:01:43,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 23:01:43,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 23:01:43,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 23:01:43,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 23:01:43,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-08-30 23:01:43,460 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 23:01:43,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 23:01:43,461 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 23:01:43,461 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 23:01:43,463 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 23:01:43,463 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 23:01:43,463 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 23:01:43,464 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 23:01:43,464 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 23:01:43,464 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 23:01:43,465 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 23:01:43,465 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-30 23:01:43,465 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 23:01:43,465 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-30 23:01:43,466 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-08-30 23:01:43,466 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-30 23:01:43,466 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 23:01:43,466 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-30 23:01:43,466 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 23:01:43,466 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 23:01:43,467 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 23:01:43,467 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 23:01:43,467 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 23:01:43,467 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 23:01:43,467 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-30 23:01:43,468 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 23:01:43,468 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 23:01:43,468 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-30 23:01:43,468 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 23:01:43,468 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3b6e96321d82dea19b0b24b62173907aded16288 [2021-08-30 23:01:43,748 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 23:01:43,772 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 23:01:43,774 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 23:01:43,776 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 23:01:43,777 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 23:01:43,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-08-30 23:01:43,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ebfdbe5e/09c8c5e6c5224e51a61242e796fdbb9a/FLAG776558a16 [2021-08-30 23:01:44,472 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 23:01:44,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/busybox-1.22.0/hostid.i [2021-08-30 23:01:44,495 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ebfdbe5e/09c8c5e6c5224e51a61242e796fdbb9a/FLAG776558a16 [2021-08-30 23:01:44,738 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ebfdbe5e/09c8c5e6c5224e51a61242e796fdbb9a [2021-08-30 23:01:44,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 23:01:44,741 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-30 23:01:44,743 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 23:01:44,743 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 23:01:44,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 23:01:44,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:01:44" (1/1) ... [2021-08-30 23:01:44,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63fab6ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:44, skipping insertion in model container [2021-08-30 23:01:44,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 11:01:44" (1/1) ... [2021-08-30 23:01:44,753 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 23:01:44,792 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 23:01:45,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 23:01:45,423 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 23:01:45,473 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 23:01:45,612 INFO L208 MainTranslator]: Completed translation [2021-08-30 23:01:45,612 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45 WrapperNode [2021-08-30 23:01:45,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 23:01:45,613 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-30 23:01:45,613 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-30 23:01:45,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-30 23:01:45,618 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45" (1/1) ... [2021-08-30 23:01:45,650 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45" (1/1) ... [2021-08-30 23:01:45,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-30 23:01:45,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 23:01:45,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 23:01:45,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 23:01:45,686 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45" (1/1) ... [2021-08-30 23:01:45,686 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45" (1/1) ... [2021-08-30 23:01:45,706 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45" (1/1) ... [2021-08-30 23:01:45,706 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45" (1/1) ... [2021-08-30 23:01:45,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45" (1/1) ... [2021-08-30 23:01:45,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45" (1/1) ... [2021-08-30 23:01:45,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45" (1/1) ... [2021-08-30 23:01:45,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 23:01:45,743 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 23:01:45,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 23:01:45,744 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 23:01:45,744 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45" (1/1) ... [2021-08-30 23:01:45,756 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 23:01:45,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:45,783 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) [2021-08-30 23:01:45,787 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 [2021-08-30 23:01:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 23:01:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 23:01:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2021-08-30 23:01:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 23:01:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 23:01:45,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 23:01:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 23:01:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 23:01:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-30 23:01:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-30 23:01:46,279 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 23:01:46,285 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2021-08-30 23:01:46,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:01:46 BoogieIcfgContainer [2021-08-30 23:01:46,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 23:01:46,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 23:01:46,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 23:01:46,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 23:01:46,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 11:01:44" (1/3) ... [2021-08-30 23:01:46,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db31c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:01:46, skipping insertion in model container [2021-08-30 23:01:46,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 11:01:45" (2/3) ... [2021-08-30 23:01:46,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52db31c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 11:01:46, skipping insertion in model container [2021-08-30 23:01:46,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:01:46" (3/3) ... [2021-08-30 23:01:46,294 INFO L111 eAbstractionObserver]: Analyzing ICFG hostid.i [2021-08-30 23:01:46,300 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 23:01:46,300 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-08-30 23:01:46,351 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 23:01:46,359 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, mConcurrency=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 [2021-08-30 23:01:46,359 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-08-30 23:01:46,373 INFO L276 IsEmpty]: Start isEmpty. Operand has 50 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:46,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-08-30 23:01:46,390 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:46,391 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-08-30 23:01:46,391 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:46,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:46,396 INFO L82 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-08-30 23:01:46,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:46,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234551752] [2021-08-30 23:01:46,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:46,412 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:46,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:46,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 23:01:46,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:46,792 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234551752] [2021-08-30 23:01:46,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234551752] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 23:01:46,793 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 23:01:46,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 23:01:46,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322574264] [2021-08-30 23:01:46,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 23:01:46,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:46,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 23:01:46,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 23:01:46,832 INFO L87 Difference]: Start difference. First operand has 50 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 49 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:47,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:47,000 INFO L93 Difference]: Finished difference Result 98 states and 116 transitions. [2021-08-30 23:01:47,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 23:01:47,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-08-30 23:01:47,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:47,011 INFO L225 Difference]: With dead ends: 98 [2021-08-30 23:01:47,011 INFO L226 Difference]: Without dead ends: 49 [2021-08-30 23:01:47,014 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.83ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 23:01:47,019 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 110.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.17ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 137.50ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:47,020 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 109 Unknown, 0 Unchecked, 2.17ms Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 137.50ms Time] [2021-08-30 23:01:47,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-30 23:01:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-30 23:01:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 33 states have (on average 1.606060606060606) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-08-30 23:01:47,061 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 4 [2021-08-30 23:01:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:47,062 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-08-30 23:01:47,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:47,062 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-08-30 23:01:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-08-30 23:01:47,063 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:47,063 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-08-30 23:01:47,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-30 23:01:47,063 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:47,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:47,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1809705867, now seen corresponding path program 1 times [2021-08-30 23:01:47,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:47,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93158197] [2021-08-30 23:01:47,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:47,065 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:47,118 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-30 23:01:47,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:47,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93158197] [2021-08-30 23:01:47,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93158197] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 23:01:47,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 23:01:47,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 23:01:47,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255078911] [2021-08-30 23:01:47,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 23:01:47,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:47,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 23:01:47,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 23:01:47,122 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:47,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:47,207 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2021-08-30 23:01:47,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 23:01:47,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-08-30 23:01:47,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:47,209 INFO L225 Difference]: With dead ends: 49 [2021-08-30 23:01:47,209 INFO L226 Difference]: Without dead ends: 48 [2021-08-30 23:01:47,210 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.68ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 23:01:47,211 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.90ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 75.56ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:47,211 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 95 Unknown, 0 Unchecked, 0.90ms Time], IncrementalHoareTripleChecker [1 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 75.56ms Time] [2021-08-30 23:01:47,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-08-30 23:01:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2021-08-30 23:01:47,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 33 states have (on average 1.5757575757575757) internal successors, (52), 47 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:47,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-08-30 23:01:47,217 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 7 [2021-08-30 23:01:47,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:47,217 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-08-30 23:01:47,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-08-30 23:01:47,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-08-30 23:01:47,218 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:47,219 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2021-08-30 23:01:47,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-30 23:01:47,219 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:47,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:47,220 INFO L82 PathProgramCache]: Analyzing trace with hash 266307074, now seen corresponding path program 1 times [2021-08-30 23:01:47,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:47,220 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902761601] [2021-08-30 23:01:47,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:47,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:47,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:47,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 23:01:47,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:47,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902761601] [2021-08-30 23:01:47,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902761601] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:47,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834844692] [2021-08-30 23:01:47,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:47,282 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:47,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:47,284 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) [2021-08-30 23:01:47,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-08-30 23:01:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:47,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 23:01:47,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:47,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 23:01:47,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 23:01:47,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834844692] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 23:01:47,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 23:01:47,466 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-08-30 23:01:47,466 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120761669] [2021-08-30 23:01:47,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 23:01:47,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:47,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 23:01:47,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 23:01:47,468 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:47,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:47,563 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2021-08-30 23:01:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 23:01:47,563 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-08-30 23:01:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:47,565 INFO L225 Difference]: With dead ends: 48 [2021-08-30 23:01:47,565 INFO L226 Difference]: Without dead ends: 47 [2021-08-30 23:01:47,566 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.99ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 23:01:47,568 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 86 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.19ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 72.14ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:47,569 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 0 Invalid, 56 Unknown, 0 Unchecked, 4.19ms Time], IncrementalHoareTripleChecker [1 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 72.14ms Time] [2021-08-30 23:01:47,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-08-30 23:01:47,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-08-30 23:01:47,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 31 states have (on average 1.5806451612903225) internal successors, (49), 44 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:47,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-08-30 23:01:47,583 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 8 [2021-08-30 23:01:47,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:47,583 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-08-30 23:01:47,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 4 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:47,584 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-08-30 23:01:47,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-08-30 23:01:47,584 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:47,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:47,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:47,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:47,807 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:47,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:47,807 INFO L82 PathProgramCache]: Analyzing trace with hash -334468778, now seen corresponding path program 1 times [2021-08-30 23:01:47,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:47,808 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193602779] [2021-08-30 23:01:47,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:47,808 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:47,897 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 23:01:47,897 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:47,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193602779] [2021-08-30 23:01:47,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193602779] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:47,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682617719] [2021-08-30 23:01:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:47,898 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:47,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:47,899 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) [2021-08-30 23:01:47,901 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-30 23:01:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:47,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 23:01:47,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:48,015 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 23:01:48,016 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 23:01:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 23:01:48,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682617719] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 23:01:48,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 23:01:48,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-08-30 23:01:48,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311013035] [2021-08-30 23:01:48,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 23:01:48,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 23:01:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-30 23:01:48,055 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:48,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:48,181 INFO L93 Difference]: Finished difference Result 93 states and 103 transitions. [2021-08-30 23:01:48,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 23:01:48,182 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-08-30 23:01:48,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:48,183 INFO L225 Difference]: With dead ends: 93 [2021-08-30 23:01:48,183 INFO L226 Difference]: Without dead ends: 54 [2021-08-30 23:01:48,184 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 16.03ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-30 23:01:48,187 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 12 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 91.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.98ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.40ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:48,188 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 0 Invalid, 151 Unknown, 0 Unchecked, 1.98ms Time], IncrementalHoareTripleChecker [5 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 115.40ms Time] [2021-08-30 23:01:48,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-08-30 23:01:48,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-08-30 23:01:48,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.45) internal successors, (58), 53 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:48,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-08-30 23:01:48,197 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 9 [2021-08-30 23:01:48,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:48,197 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-08-30 23:01:48,197 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.5714285714285716) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:48,197 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-08-30 23:01:48,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-08-30 23:01:48,198 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:48,198 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:48,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:48,421 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,SelfDestructingSolverStorable3 [2021-08-30 23:01:48,421 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:48,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:48,422 INFO L82 PathProgramCache]: Analyzing trace with hash -907252720, now seen corresponding path program 2 times [2021-08-30 23:01:48,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:48,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387738140] [2021-08-30 23:01:48,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:48,422 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:48,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:48,547 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 23:01:48,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:48,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387738140] [2021-08-30 23:01:48,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387738140] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:48,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994214482] [2021-08-30 23:01:48,548 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 23:01:48,548 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:48,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:48,561 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) [2021-08-30 23:01:48,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-30 23:01:48,645 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 23:01:48,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 23:01:48,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 23:01:48,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:48,733 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-30 23:01:48,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 23:01:48,734 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994214482] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 23:01:48,734 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 23:01:48,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2021-08-30 23:01:48,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951106810] [2021-08-30 23:01:48,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 23:01:48,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:48,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 23:01:48,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-08-30 23:01:48,736 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:48,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:48,829 INFO L93 Difference]: Finished difference Result 54 states and 58 transitions. [2021-08-30 23:01:48,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 23:01:48,830 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-08-30 23:01:48,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:48,831 INFO L225 Difference]: With dead ends: 54 [2021-08-30 23:01:48,831 INFO L226 Difference]: Without dead ends: 46 [2021-08-30 23:01:48,831 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 59.72ms TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-08-30 23:01:48,832 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 65 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.65ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 64.50ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:48,832 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 0 Invalid, 60 Unknown, 0 Unchecked, 1.65ms Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 64.50ms Time] [2021-08-30 23:01:48,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-08-30 23:01:48,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-08-30 23:01:48,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 40 states have (on average 1.25) internal successors, (50), 45 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2021-08-30 23:01:48,836 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 18 [2021-08-30 23:01:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:48,837 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2021-08-30 23:01:48,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2021-08-30 23:01:48,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 23:01:48,838 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:48,838 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:48,857 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:49,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:49,053 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:49,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:49,054 INFO L82 PathProgramCache]: Analyzing trace with hash 855487690, now seen corresponding path program 1 times [2021-08-30 23:01:49,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:49,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296715154] [2021-08-30 23:01:49,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:49,054 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:49,134 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-30 23:01:49,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:49,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296715154] [2021-08-30 23:01:49,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296715154] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 23:01:49,135 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 23:01:49,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-30 23:01:49,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608477988] [2021-08-30 23:01:49,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 23:01:49,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:49,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 23:01:49,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 23:01:49,138 INFO L87 Difference]: Start difference. First operand 46 states and 50 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:49,209 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2021-08-30 23:01:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 23:01:49,211 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-08-30 23:01:49,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:49,212 INFO L225 Difference]: With dead ends: 70 [2021-08-30 23:01:49,212 INFO L226 Difference]: Without dead ends: 49 [2021-08-30 23:01:49,213 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.80ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 23:01:49,220 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.89ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.27ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:49,221 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 81 Unknown, 0 Unchecked, 0.89ms Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 62.27ms Time] [2021-08-30 23:01:49,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-08-30 23:01:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2021-08-30 23:01:49,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 43 states have (on average 1.2325581395348837) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-08-30 23:01:49,232 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 28 [2021-08-30 23:01:49,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:49,232 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-08-30 23:01:49,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-08-30 23:01:49,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-30 23:01:49,233 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:49,233 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:49,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-30 23:01:49,234 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:49,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:49,234 INFO L82 PathProgramCache]: Analyzing trace with hash -500432025, now seen corresponding path program 1 times [2021-08-30 23:01:49,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:49,235 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335244479] [2021-08-30 23:01:49,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:49,235 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:49,306 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-30 23:01:49,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:49,306 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335244479] [2021-08-30 23:01:49,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335244479] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:49,307 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1205040357] [2021-08-30 23:01:49,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:49,307 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:49,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:49,313 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) [2021-08-30 23:01:49,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-30 23:01:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:49,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 23:01:49,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:49,476 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-08-30 23:01:49,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 23:01:49,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1205040357] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 23:01:49,477 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 23:01:49,477 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-08-30 23:01:49,477 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836236313] [2021-08-30 23:01:49,477 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 23:01:49,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:49,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 23:01:49,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 23:01:49,478 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:49,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:49,579 INFO L93 Difference]: Finished difference Result 72 states and 80 transitions. [2021-08-30 23:01:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 23:01:49,579 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-30 23:01:49,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:49,581 INFO L225 Difference]: With dead ends: 72 [2021-08-30 23:01:49,581 INFO L226 Difference]: Without dead ends: 71 [2021-08-30 23:01:49,582 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 8.28ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 23:01:49,582 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 69.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.57ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 93.66ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:49,583 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 79 Unknown, 0 Unchecked, 0.57ms Time], IncrementalHoareTripleChecker [1 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 93.66ms Time] [2021-08-30 23:01:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-30 23:01:49,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2021-08-30 23:01:49,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 51 states have (on average 1.2745098039215685) internal successors, (65), 56 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:49,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 65 transitions. [2021-08-30 23:01:49,596 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 65 transitions. Word has length 31 [2021-08-30 23:01:49,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:49,596 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 65 transitions. [2021-08-30 23:01:49,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:49,598 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 65 transitions. [2021-08-30 23:01:49,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-08-30 23:01:49,599 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:49,599 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:49,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:49,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:49,825 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:49,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:49,825 INFO L82 PathProgramCache]: Analyzing trace with hash -500431970, now seen corresponding path program 1 times [2021-08-30 23:01:49,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:49,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954430511] [2021-08-30 23:01:49,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:49,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:49,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-08-30 23:01:49,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:49,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954430511] [2021-08-30 23:01:49,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954430511] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 23:01:49,878 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 23:01:49,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 23:01:49,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402516242] [2021-08-30 23:01:49,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 23:01:49,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 23:01:49,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 23:01:49,879 INFO L87 Difference]: Start difference. First operand 57 states and 65 transitions. Second operand has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:49,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:49,937 INFO L93 Difference]: Finished difference Result 57 states and 65 transitions. [2021-08-30 23:01:49,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 23:01:49,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 31 [2021-08-30 23:01:49,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:49,939 INFO L225 Difference]: With dead ends: 57 [2021-08-30 23:01:49,939 INFO L226 Difference]: Without dead ends: 56 [2021-08-30 23:01:49,939 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.70ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 23:01:49,940 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.28ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.14ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:49,940 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 75 Unknown, 0 Unchecked, 0.28ms Time], IncrementalHoareTripleChecker [1 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 53.14ms Time] [2021-08-30 23:01:49,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-30 23:01:49,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-08-30 23:01:49,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 51 states have (on average 1.2352941176470589) internal successors, (63), 55 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:49,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 63 transitions. [2021-08-30 23:01:49,955 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 63 transitions. Word has length 31 [2021-08-30 23:01:49,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:49,957 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 63 transitions. [2021-08-30 23:01:49,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.0) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:49,957 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 63 transitions. [2021-08-30 23:01:49,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 23:01:49,959 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:49,960 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:49,960 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-30 23:01:49,960 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:49,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:49,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1666476508, now seen corresponding path program 1 times [2021-08-30 23:01:49,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:49,961 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208965311] [2021-08-30 23:01:49,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:49,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:49,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:50,026 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-30 23:01:50,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:50,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208965311] [2021-08-30 23:01:50,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208965311] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:50,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590128296] [2021-08-30 23:01:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:50,027 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:50,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:50,028 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) [2021-08-30 23:01:50,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-30 23:01:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:50,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-30 23:01:50,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:50,199 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-08-30 23:01:50,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 23:01:50,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590128296] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 23:01:50,200 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 23:01:50,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2021-08-30 23:01:50,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701833444] [2021-08-30 23:01:50,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 23:01:50,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:50,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 23:01:50,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 23:01:50,202 INFO L87 Difference]: Start difference. First operand 56 states and 63 transitions. Second operand has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:50,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:50,253 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2021-08-30 23:01:50,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 23:01:50,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-30 23:01:50,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:50,254 INFO L225 Difference]: With dead ends: 56 [2021-08-30 23:01:50,255 INFO L226 Difference]: Without dead ends: 55 [2021-08-30 23:01:50,255 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 7.98ms TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-08-30 23:01:50,256 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 37.27ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 46.22ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:50,257 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 54 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 46.22ms Time] [2021-08-30 23:01:50,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-08-30 23:01:50,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2021-08-30 23:01:50,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 51 states have (on average 1.2156862745098038) internal successors, (62), 54 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:50,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 62 transitions. [2021-08-30 23:01:50,260 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 62 transitions. Word has length 32 [2021-08-30 23:01:50,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:50,261 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 62 transitions. [2021-08-30 23:01:50,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 11.5) internal successors, (23), 3 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:50,261 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 62 transitions. [2021-08-30 23:01:50,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 23:01:50,263 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:50,263 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:50,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:50,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:50,477 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:50,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:50,477 INFO L82 PathProgramCache]: Analyzing trace with hash 1666478206, now seen corresponding path program 1 times [2021-08-30 23:01:50,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:50,478 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791865067] [2021-08-30 23:01:50,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:50,478 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:50,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-08-30 23:01:50,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:50,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791865067] [2021-08-30 23:01:50,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791865067] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:50,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099651814] [2021-08-30 23:01:50,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:50,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:50,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:50,541 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) [2021-08-30 23:01:50,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-08-30 23:01:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:50,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 23:01:50,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:50,755 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-30 23:01:50,756 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 23:01:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-30 23:01:50,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099651814] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 23:01:50,904 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 23:01:50,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2021-08-30 23:01:50,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6822955] [2021-08-30 23:01:50,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 23:01:50,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:50,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 23:01:50,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-08-30 23:01:50,908 INFO L87 Difference]: Start difference. First operand 55 states and 62 transitions. Second operand has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:51,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:51,143 INFO L93 Difference]: Finished difference Result 123 states and 144 transitions. [2021-08-30 23:01:51,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 23:01:51,143 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-08-30 23:01:51,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:51,144 INFO L225 Difference]: With dead ends: 123 [2021-08-30 23:01:51,144 INFO L226 Difference]: Without dead ends: 83 [2021-08-30 23:01:51,145 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 77.94ms TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2021-08-30 23:01:51,145 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 164.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.62ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 218.57ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:51,146 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 373 Unknown, 0 Unchecked, 1.62ms Time], IncrementalHoareTripleChecker [8 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 218.57ms Time] [2021-08-30 23:01:51,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-08-30 23:01:51,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 68. [2021-08-30 23:01:51,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 65 states have (on average 1.1384615384615384) internal successors, (74), 67 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:51,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2021-08-30 23:01:51,150 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 32 [2021-08-30 23:01:51,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:51,150 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2021-08-30 23:01:51,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.714285714285714) internal successors, (66), 14 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:51,150 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2021-08-30 23:01:51,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-08-30 23:01:51,151 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:51,151 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:51,173 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:51,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:51,369 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:51,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:51,369 INFO L82 PathProgramCache]: Analyzing trace with hash -1277844122, now seen corresponding path program 1 times [2021-08-30 23:01:51,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:51,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345807107] [2021-08-30 23:01:51,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:51,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:51,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:51,431 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 23:01:51,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:51,431 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345807107] [2021-08-30 23:01:51,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345807107] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 23:01:51,432 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-30 23:01:51,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-08-30 23:01:51,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133094333] [2021-08-30 23:01:51,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-30 23:01:51,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:51,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-30 23:01:51,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 23:01:51,433 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:51,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:51,487 INFO L93 Difference]: Finished difference Result 73 states and 79 transitions. [2021-08-30 23:01:51,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-30 23:01:51,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-08-30 23:01:51,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:51,490 INFO L225 Difference]: With dead ends: 73 [2021-08-30 23:01:51,490 INFO L226 Difference]: Without dead ends: 71 [2021-08-30 23:01:51,490 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.62ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-30 23:01:51,491 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.32ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.23ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 49.91ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:51,491 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.23ms Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 49.91ms Time] [2021-08-30 23:01:51,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-08-30 23:01:51,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2021-08-30 23:01:51,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 68 states have (on average 1.1323529411764706) internal successors, (77), 70 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:51,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 77 transitions. [2021-08-30 23:01:51,496 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 77 transitions. Word has length 52 [2021-08-30 23:01:51,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:51,496 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 77 transitions. [2021-08-30 23:01:51,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:51,496 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 77 transitions. [2021-08-30 23:01:51,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-08-30 23:01:51,499 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:51,499 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:51,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-30 23:01:51,499 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:51,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:51,500 INFO L82 PathProgramCache]: Analyzing trace with hash -1958965121, now seen corresponding path program 1 times [2021-08-30 23:01:51,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:51,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532463816] [2021-08-30 23:01:51,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:51,501 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:51,580 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-30 23:01:51,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:51,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532463816] [2021-08-30 23:01:51,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532463816] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:51,581 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487846714] [2021-08-30 23:01:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:51,581 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:51,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:51,589 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) [2021-08-30 23:01:51,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-08-30 23:01:51,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:51,702 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 23:01:51,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:51,820 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2021-08-30 23:01:51,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 23:01:51,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487846714] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 23:01:51,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 23:01:51,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [3] total 7 [2021-08-30 23:01:51,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077885097] [2021-08-30 23:01:51,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 23:01:51,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:51,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 23:01:51,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-08-30 23:01:51,822 INFO L87 Difference]: Start difference. First operand 71 states and 77 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:51,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:51,937 INFO L93 Difference]: Finished difference Result 86 states and 93 transitions. [2021-08-30 23:01:51,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 23:01:51,938 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-08-30 23:01:51,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:51,938 INFO L225 Difference]: With dead ends: 86 [2021-08-30 23:01:51,938 INFO L226 Difference]: Without dead ends: 72 [2021-08-30 23:01:51,939 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 29.68ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-08-30 23:01:51,939 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 16 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 63.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.70ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:51,940 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 0 Invalid, 117 Unknown, 0 Unchecked, 0.48ms Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 94.70ms Time] [2021-08-30 23:01:51,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-08-30 23:01:51,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2021-08-30 23:01:51,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 68 states have (on average 1.1176470588235294) internal successors, (76), 70 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:51,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 76 transitions. [2021-08-30 23:01:51,944 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 76 transitions. Word has length 55 [2021-08-30 23:01:51,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:51,944 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 76 transitions. [2021-08-30 23:01:51,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:51,944 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 76 transitions. [2021-08-30 23:01:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-30 23:01:51,945 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:51,945 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:51,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:52,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:52,153 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:52,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:52,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1076743922, now seen corresponding path program 1 times [2021-08-30 23:01:52,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:52,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073000511] [2021-08-30 23:01:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:52,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:52,220 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-30 23:01:52,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:52,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073000511] [2021-08-30 23:01:52,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073000511] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:52,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228562648] [2021-08-30 23:01:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:52,222 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:52,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:52,230 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) [2021-08-30 23:01:52,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-08-30 23:01:52,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:52,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 23:01:52,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-30 23:01:52,487 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 23:01:52,589 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-30 23:01:52,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228562648] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 23:01:52,589 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 23:01:52,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-08-30 23:01:52,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481466322] [2021-08-30 23:01:52,590 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-30 23:01:52,590 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:52,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-30 23:01:52,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-30 23:01:52,591 INFO L87 Difference]: Start difference. First operand 71 states and 76 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:52,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:52,709 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2021-08-30 23:01:52,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 23:01:52,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-08-30 23:01:52,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:52,710 INFO L225 Difference]: With dead ends: 112 [2021-08-30 23:01:52,710 INFO L226 Difference]: Without dead ends: 89 [2021-08-30 23:01:52,710 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 13.75ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-08-30 23:01:52,711 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.68ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.12ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:52,711 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 183 Unknown, 0 Unchecked, 0.68ms Time], IncrementalHoareTripleChecker [4 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 109.12ms Time] [2021-08-30 23:01:52,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-30 23:01:52,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-08-30 23:01:52,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 86 states have (on average 1.0930232558139534) internal successors, (94), 88 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:52,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2021-08-30 23:01:52,715 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 56 [2021-08-30 23:01:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:52,715 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2021-08-30 23:01:52,715 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2021-08-30 23:01:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-08-30 23:01:52,716 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:52,716 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:52,749 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:52,929 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,SelfDestructingSolverStorable12 [2021-08-30 23:01:52,929 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:52,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:52,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1743612615, now seen corresponding path program 1 times [2021-08-30 23:01:52,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:52,930 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391995421] [2021-08-30 23:01:52,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:52,930 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:52,999 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2021-08-30 23:01:53,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:53,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391995421] [2021-08-30 23:01:53,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391995421] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:53,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711145272] [2021-08-30 23:01:53,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:53,001 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:53,001 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:53,013 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) [2021-08-30 23:01:53,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-08-30 23:01:53,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:53,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 23:01:53,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:53,281 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-30 23:01:53,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 23:01:53,445 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-30 23:01:53,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711145272] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 23:01:53,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 23:01:53,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 7, 7] total 14 [2021-08-30 23:01:53,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188022107] [2021-08-30 23:01:53,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 23:01:53,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:53,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 23:01:53,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-30 23:01:53,447 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:53,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:53,613 INFO L93 Difference]: Finished difference Result 160 states and 182 transitions. [2021-08-30 23:01:53,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-30 23:01:53,613 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-08-30 23:01:53,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:53,614 INFO L225 Difference]: With dead ends: 160 [2021-08-30 23:01:53,614 INFO L226 Difference]: Without dead ends: 128 [2021-08-30 23:01:53,614 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 70.73ms TimeCoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2021-08-30 23:01:53,615 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 124.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.08ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.47ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:53,615 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 246 Unknown, 0 Unchecked, 1.08ms Time], IncrementalHoareTripleChecker [11 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 152.47ms Time] [2021-08-30 23:01:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-08-30 23:01:53,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 127. [2021-08-30 23:01:53,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 124 states have (on average 1.064516129032258) internal successors, (132), 126 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:53,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 132 transitions. [2021-08-30 23:01:53,620 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 132 transitions. Word has length 71 [2021-08-30 23:01:53,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:53,620 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 132 transitions. [2021-08-30 23:01:53,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.428571428571429) internal successors, (76), 14 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 132 transitions. [2021-08-30 23:01:53,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-08-30 23:01:53,621 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:53,621 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:53,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:53,844 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,SelfDestructingSolverStorable13 [2021-08-30 23:01:53,844 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:53,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:53,845 INFO L82 PathProgramCache]: Analyzing trace with hash 1128864571, now seen corresponding path program 1 times [2021-08-30 23:01:53,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:53,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845817815] [2021-08-30 23:01:53,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:53,845 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:53,942 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-08-30 23:01:53,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:53,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845817815] [2021-08-30 23:01:53,943 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845817815] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:53,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [58550346] [2021-08-30 23:01:53,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:53,943 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:53,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:53,955 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) [2021-08-30 23:01:53,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-08-30 23:01:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:54,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 23:01:54,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:54,271 INFO L134 CoverageAnalysis]: Checked inductivity of 294 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2021-08-30 23:01:54,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-08-30 23:01:54,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [58550346] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-30 23:01:54,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-30 23:01:54,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-08-30 23:01:54,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992868078] [2021-08-30 23:01:54,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-30 23:01:54,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:54,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-30 23:01:54,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 23:01:54,274 INFO L87 Difference]: Start difference. First operand 127 states and 132 transitions. Second operand has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:54,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:54,334 INFO L93 Difference]: Finished difference Result 127 states and 132 transitions. [2021-08-30 23:01:54,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-30 23:01:54,334 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2021-08-30 23:01:54,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:54,335 INFO L225 Difference]: With dead ends: 127 [2021-08-30 23:01:54,335 INFO L226 Difference]: Without dead ends: 126 [2021-08-30 23:01:54,336 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.73ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 23:01:54,336 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 2 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 42.36ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.26ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.38ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:54,336 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 0 Invalid, 74 Unknown, 0 Unchecked, 0.26ms Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 53.38ms Time] [2021-08-30 23:01:54,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-08-30 23:01:54,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2021-08-30 23:01:54,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 124 states have (on average 1.0564516129032258) internal successors, (131), 125 states have internal predecessors, (131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:54,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 131 transitions. [2021-08-30 23:01:54,342 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 131 transitions. Word has length 90 [2021-08-30 23:01:54,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:54,342 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 131 transitions. [2021-08-30 23:01:54,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 12.0) internal successors, (36), 4 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:54,343 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 131 transitions. [2021-08-30 23:01:54,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-08-30 23:01:54,344 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:54,344 INFO L513 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:54,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:54,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-08-30 23:01:54,561 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:54,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:54,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1787869154, now seen corresponding path program 2 times [2021-08-30 23:01:54,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:54,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639466588] [2021-08-30 23:01:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:54,562 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:54,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:54,693 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-08-30 23:01:54,694 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:54,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639466588] [2021-08-30 23:01:54,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639466588] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:54,694 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2095112664] [2021-08-30 23:01:54,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 23:01:54,694 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:54,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:54,695 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) [2021-08-30 23:01:54,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-30 23:01:54,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 23:01:54,799 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 23:01:54,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 23:01:54,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:54,990 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-08-30 23:01:54,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 23:01:55,178 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-08-30 23:01:55,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2095112664] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 23:01:55,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 23:01:55,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 5 [2021-08-30 23:01:55,179 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159639460] [2021-08-30 23:01:55,179 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 23:01:55,179 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:55,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 23:01:55,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-30 23:01:55,180 INFO L87 Difference]: Start difference. First operand 126 states and 131 transitions. Second operand has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:55,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:55,253 INFO L93 Difference]: Finished difference Result 126 states and 131 transitions. [2021-08-30 23:01:55,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 23:01:55,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2021-08-30 23:01:55,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:55,255 INFO L225 Difference]: With dead ends: 126 [2021-08-30 23:01:55,255 INFO L226 Difference]: Without dead ends: 111 [2021-08-30 23:01:55,255 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 24.56ms TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-08-30 23:01:55,255 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 7 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.33ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 57.38ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:55,256 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 0 Invalid, 87 Unknown, 0 Unchecked, 0.33ms Time], IncrementalHoareTripleChecker [4 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 57.38ms Time] [2021-08-30 23:01:55,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-30 23:01:55,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-08-30 23:01:55,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 110 states have (on average 1.0363636363636364) internal successors, (114), 110 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:55,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 114 transitions. [2021-08-30 23:01:55,260 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 114 transitions. Word has length 92 [2021-08-30 23:01:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:55,261 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 114 transitions. [2021-08-30 23:01:55,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.0) internal successors, (60), 6 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:55,261 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 114 transitions. [2021-08-30 23:01:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-08-30 23:01:55,262 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 23:01:55,262 INFO L513 BasicCegarLoop]: trace histogram [20, 20, 20, 10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 23:01:55,288 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:55,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-08-30 23:01:55,463 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 13 more)] === [2021-08-30 23:01:55,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 23:01:55,463 INFO L82 PathProgramCache]: Analyzing trace with hash -851839678, now seen corresponding path program 2 times [2021-08-30 23:01:55,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-30 23:01:55,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512215125] [2021-08-30 23:01:55,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 23:01:55,463 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-30 23:01:55,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 23:01:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 323 refuted. 0 times theorem prover too weak. 435 trivial. 0 not checked. [2021-08-30 23:01:55,599 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-30 23:01:55,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512215125] [2021-08-30 23:01:55,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512215125] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-30 23:01:55,599 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172189120] [2021-08-30 23:01:55,599 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-30 23:01:55,599 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 23:01:55,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 23:01:55,600 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 23:01:55,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-08-30 23:01:55,703 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-30 23:01:55,703 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-30 23:01:55,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-30 23:01:55,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 23:01:55,957 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2021-08-30 23:01:55,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 23:01:56,209 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 322 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2021-08-30 23:01:56,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172189120] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-30 23:01:56,209 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-08-30 23:01:56,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-08-30 23:01:56,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370636691] [2021-08-30 23:01:56,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-30 23:01:56,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-30 23:01:56,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-30 23:01:56,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-08-30 23:01:56,211 INFO L87 Difference]: Start difference. First operand 111 states and 114 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:56,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 23:01:56,304 INFO L93 Difference]: Finished difference Result 147 states and 152 transitions. [2021-08-30 23:01:56,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 23:01:56,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 110 [2021-08-30 23:01:56,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 23:01:56,305 INFO L225 Difference]: With dead ends: 147 [2021-08-30 23:01:56,305 INFO L226 Difference]: Without dead ends: 0 [2021-08-30 23:01:56,305 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 44.96ms TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-08-30 23:01:56,306 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 8 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 51.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.37ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.90ms IncrementalHoareTripleChecker+Time [2021-08-30 23:01:56,306 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 0 Invalid, 90 Unknown, 0 Unchecked, 0.37ms Time], IncrementalHoareTripleChecker [6 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 62.90ms Time] [2021-08-30 23:01:56,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-08-30 23:01:56,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-08-30 23:01:56,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:56,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-08-30 23:01:56,307 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 110 [2021-08-30 23:01:56,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 23:01:56,307 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-30 23:01:56,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 8 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-30 23:01:56,307 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-08-30 23:01:56,307 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-08-30 23:01:56,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2021-08-30 23:01:56,309 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2021-08-30 23:01:56,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2021-08-30 23:01:56,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2021-08-30 23:01:56,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2021-08-30 23:01:56,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2021-08-30 23:01:56,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 16 remaining) [2021-08-30 23:01:56,310 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 16 remaining) [2021-08-30 23:01:56,311 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 16 remaining) [2021-08-30 23:01:56,311 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 16 remaining) [2021-08-30 23:01:56,311 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2021-08-30 23:01:56,311 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2021-08-30 23:01:56,311 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2021-08-30 23:01:56,311 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2021-08-30 23:01:56,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2021-08-30 23:01:56,312 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2021-08-30 23:01:56,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-08-30 23:01:56,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-08-30 23:01:56,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-08-30 23:01:56,526 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 23:01:56,548 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 23:01:56,557 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 23:01:56,568 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 23:01:56,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 23:01:56,594 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 23:01:56,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 23:01:56,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-08-30 23:01:56,851 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1886) no Hoare annotation was computed. [2021-08-30 23:01:56,852 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1898) no Hoare annotation was computed. [2021-08-30 23:01:56,852 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1887) no Hoare annotation was computed. [2021-08-30 23:01:56,852 INFO L858 garLoopResultBuilder]: For program point L1894-2(lines 1894 1895) no Hoare annotation was computed. [2021-08-30 23:01:56,852 INFO L858 garLoopResultBuilder]: For program point L1894-3(line 1894) no Hoare annotation was computed. [2021-08-30 23:01:56,852 INFO L854 garLoopResultBuilder]: At program point L1894-4(lines 1894 1895) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~4)) (.cse1 (<= 1 ULTIMATE.start_main_~i~3)) (.cse2 (<= ULTIMATE.start_main_~argc~0 10000)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (< ULTIMATE.start_main_~i~4 268435454)) (.cse5 (<= 1 ULTIMATE.start_main_~argc~0))) (or (and .cse0 .cse1 .cse2 .cse3 (<= 1 ULTIMATE.start_main_~j~0) .cse4 .cse5) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= ULTIMATE.start_main_~j~0 0) .cse5))) [2021-08-30 23:01:56,852 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1879) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point L1886(line 1886) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point L1886-1(line 1886) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point L1886-2(line 1886) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L861 garLoopResultBuilder]: At program point L1903(lines 1875 1904) the Hoare annotation is: true [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1887) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1879) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point L1887(line 1887) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point L1887-1(line 1887) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point L1887-2(line 1887) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point L1887-3(line 1887) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point L1879-2(lines 1879 1880) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L858 garLoopResultBuilder]: For program point L1879-3(line 1879) no Hoare annotation was computed. [2021-08-30 23:01:56,853 INFO L854 garLoopResultBuilder]: At program point L1879-4(lines 1879 1880) the Hoare annotation is: (<= 0 ULTIMATE.start_main_~i~3) [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point L1879-5(lines 1879 1880) no Hoare annotation was computed. [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1887) no Hoare annotation was computed. [2021-08-30 23:01:56,854 INFO L854 garLoopResultBuilder]: At program point L1789(lines 1780 1790) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~i~4) (<= 1 ULTIMATE.start_main_~i~3) (<= ULTIMATE.start_main_~argc~0 10000) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ULTIMATE.start_main_~argc~0)) [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1894) no Hoare annotation was computed. [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point L1889-2(lines 1889 1896) no Hoare annotation was computed. [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point L1889-3(line 1889) no Hoare annotation was computed. [2021-08-30 23:01:56,854 INFO L854 garLoopResultBuilder]: At program point L1889-4(lines 1889 1896) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~i~3)) (.cse1 (<= ULTIMATE.start_main_~argc~0 10000)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse3 (<= 1 ULTIMATE.start_main_~argc~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~i~4 0)) (and (<= 0 ULTIMATE.start_main_~i~4) .cse0 .cse1 .cse2 (<= 1 ULTIMATE.start_main_~j~0) (<= ULTIMATE.start_main_~i~4 2147483646) .cse3))) [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point L1889-5(lines 1889 1896) no Hoare annotation was computed. [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point L1782(lines 1782 1783) no Hoare annotation was computed. [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point L1782-1(lines 1782 1783) no Hoare annotation was computed. [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1894) no Hoare annotation was computed. [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point L1898-2(lines 1898 1899) no Hoare annotation was computed. [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point L1898-3(line 1898) no Hoare annotation was computed. [2021-08-30 23:01:56,854 INFO L854 garLoopResultBuilder]: At program point L1898-4(lines 1898 1899) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~i~4)) (.cse1 (<= 1 ULTIMATE.start_main_~i~3)) (.cse2 (<= ULTIMATE.start_main_~argc~0 10000)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse4 (<= 1 ULTIMATE.start_main_~argc~0))) (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~i~5 0) .cse4) (and .cse0 .cse1 .cse2 .cse3 (<= 1 ULTIMATE.start_main_~i~5) (<= ULTIMATE.start_main_~i~5 2147483646) .cse4))) [2021-08-30 23:01:56,854 INFO L858 garLoopResultBuilder]: For program point L1898-5(lines 1898 1899) no Hoare annotation was computed. [2021-08-30 23:01:56,855 INFO L858 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-08-30 23:01:56,855 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1886) no Hoare annotation was computed. [2021-08-30 23:01:56,855 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1889) no Hoare annotation was computed. [2021-08-30 23:01:56,855 INFO L854 garLoopResultBuilder]: At program point L1775(lines 1771 1776) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~i~4) (<= 1 ULTIMATE.start_main_~i~3) (<= ULTIMATE.start_main_~argc~0 10000) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ULTIMATE.start_main_~argc~0)) [2021-08-30 23:01:56,855 INFO L858 garLoopResultBuilder]: For program point L8(lines 8 10) no Hoare annotation was computed. [2021-08-30 23:01:56,855 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-08-30 23:01:56,855 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1886) no Hoare annotation was computed. [2021-08-30 23:01:56,855 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1889) no Hoare annotation was computed. [2021-08-30 23:01:56,855 INFO L858 garLoopResultBuilder]: For program point L9(line 9) no Hoare annotation was computed. [2021-08-30 23:01:56,855 INFO L854 garLoopResultBuilder]: At program point L1793(lines 1791 1794) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~i~4) (<= 1 ULTIMATE.start_main_~i~3) (<= ULTIMATE.start_main_~argc~0 10000) (= ULTIMATE.start_assume_abort_if_not_~cond 1) (<= 1 ULTIMATE.start_main_~argc~0)) [2021-08-30 23:01:56,855 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1886) no Hoare annotation was computed. [2021-08-30 23:01:56,855 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1898) no Hoare annotation was computed. [2021-08-30 23:01:56,855 INFO L858 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW(line 1887) no Hoare annotation was computed. [2021-08-30 23:01:56,859 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 23:01:56,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 11:01:56 BoogieIcfgContainer [2021-08-30 23:01:56,874 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 23:01:56,875 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 23:01:56,875 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 23:01:56,875 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 23:01:56,875 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 11:01:46" (3/4) ... [2021-08-30 23:01:56,878 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-08-30 23:01:56,887 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-08-30 23:01:56,888 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2021-08-30 23:01:56,888 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-08-30 23:01:56,889 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-08-30 23:01:56,921 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-30 23:01:56,922 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 23:01:56,922 INFO L158 Benchmark]: Toolchain (without parser) took 12181.04ms. Allocated memory was 56.6MB in the beginning and 146.8MB in the end (delta: 90.2MB). Free memory was 31.8MB in the beginning and 65.2MB in the end (delta: -33.4MB). Peak memory consumption was 55.8MB. Max. memory is 16.1GB. [2021-08-30 23:01:56,923 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 23:01:56,923 INFO L158 Benchmark]: CACSL2BoogieTranslator took 869.72ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 31.7MB in the beginning and 43.1MB in the end (delta: -11.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. [2021-08-30 23:01:56,923 INFO L158 Benchmark]: Boogie Procedure Inliner took 64.22ms. Allocated memory is still 69.2MB. Free memory was 43.1MB in the beginning and 39.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 23:01:56,923 INFO L158 Benchmark]: Boogie Preprocessor took 64.54ms. Allocated memory is still 69.2MB. Free memory was 39.5MB in the beginning and 36.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 23:01:56,924 INFO L158 Benchmark]: RCFGBuilder took 544.68ms. Allocated memory is still 69.2MB. Free memory was 36.8MB in the beginning and 33.6MB in the end (delta: 3.2MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. [2021-08-30 23:01:56,924 INFO L158 Benchmark]: TraceAbstraction took 10584.64ms. Allocated memory was 69.2MB in the beginning and 146.8MB in the end (delta: 77.6MB). Free memory was 33.0MB in the beginning and 69.4MB in the end (delta: -36.4MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. [2021-08-30 23:01:56,924 INFO L158 Benchmark]: Witness Printer took 47.31ms. Allocated memory is still 146.8MB. Free memory was 69.4MB in the beginning and 65.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-30 23:01:56,926 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 38.7MB in the end (delta: 42.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 869.72ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 31.7MB in the beginning and 43.1MB in the end (delta: -11.4MB). Peak memory consumption was 19.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 64.22ms. Allocated memory is still 69.2MB. Free memory was 43.1MB in the beginning and 39.5MB in the end (delta: 3.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 64.54ms. Allocated memory is still 69.2MB. Free memory was 39.5MB in the beginning and 36.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 544.68ms. Allocated memory is still 69.2MB. Free memory was 36.8MB in the beginning and 33.6MB in the end (delta: 3.2MB). Peak memory consumption was 10.7MB. Max. memory is 16.1GB. * TraceAbstraction took 10584.64ms. Allocated memory was 69.2MB in the beginning and 146.8MB in the end (delta: 77.6MB). Free memory was 33.0MB in the beginning and 69.4MB in the end (delta: -36.4MB). Peak memory consumption was 40.7MB. Max. memory is 16.1GB. * Witness Printer took 47.31ms. Allocated memory is still 146.8MB. Free memory was 69.4MB in the beginning and 65.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1879]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1879]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1886]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1886]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1886]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1886]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1887]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1887]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1887]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1887]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1894]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1894]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1889]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1889]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1898]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 1898]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 50 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 10510.03ms, OverallIterations: 17, TraceHistogramMax: 20, EmptinessCheckTime: 34.37ms, AutomataDifference: 1904.46ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 330.18ms, InitialAbstractionConstructionTime: 10.62ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 324 SdHoareTripleChecker+Valid, 1518.82ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 324 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1187.08ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 964 mSDsCounter, 56 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1948 IncrementalHoareTripleChecker+Invalid, 2004 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 56 mSolverCounterUnsat, 0 mSDtfsCounter, 1948 mSolverCounterSat, 18.77ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1020 GetRequests, 936 SyntacticMatches, 2 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 384.99ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=127occurred in iteration=14, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 123.90ms AutomataMinimizationTime, 17 MinimizatonAttempts, 33 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.00ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 66 NumberOfFragments, 178 HoareAnnotationTreeSize, 8 FomulaSimplifications, 1365 FormulaSimplificationTreeSizeReduction, 80.06ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 612 FormulaSimplificationTreeSizeReductionInter, 243.03ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 236.45ms SsaConstructionTime, 613.92ms SatisfiabilityAnalysisTime, 3390.03ms InterpolantComputationTime, 1330 NumberOfCodeBlocks, 1154 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 1665 ConstructedInterpolants, 0 QuantifiedInterpolants, 2852 SizeOfPredicates, 11 NumberOfNonLiveVariables, 2392 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 35 InterpolantComputations, 11 PerfectInterpolantSequences, 4334/5438 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 1771]: Loop Invariant Derived loop invariant: (((0 <= i && 1 <= i) && argc <= 10000) && cond == 1) && 1 <= argc - InvariantResult [Line: 1791]: Loop Invariant Derived loop invariant: (((0 <= i && 1 <= i) && argc <= 10000) && cond == 1) && 1 <= argc - InvariantResult [Line: 1879]: Loop Invariant Derived loop invariant: 0 <= i - InvariantResult [Line: 1889]: Loop Invariant Derived loop invariant: ((((1 <= i && argc <= 10000) && cond == 1) && 1 <= argc) && i == 0) || ((((((0 <= i && 1 <= i) && argc <= 10000) && cond == 1) && 1 <= j) && i <= 2147483646) && 1 <= argc) - InvariantResult [Line: 1780]: Loop Invariant Derived loop invariant: (((0 <= i && 1 <= i) && argc <= 10000) && cond == 1) && 1 <= argc - InvariantResult [Line: 1894]: Loop Invariant Derived loop invariant: ((((((0 <= i && 1 <= i) && argc <= 10000) && cond == 1) && 1 <= j) && i < 268435454) && 1 <= argc) || ((((((0 <= i && 1 <= i) && argc <= 10000) && cond == 1) && i < 268435454) && j == 0) && 1 <= argc) - InvariantResult [Line: 1875]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 1898]: Loop Invariant Derived loop invariant: (((((0 <= i && 1 <= i) && argc <= 10000) && cond == 1) && i == 0) && 1 <= argc) || ((((((0 <= i && 1 <= i) && argc <= 10000) && cond == 1) && 1 <= i) && i <= 2147483646) && 1 <= argc) RESULT: Ultimate proved your program to be correct! [2021-08-30 23:01:56,964 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...