./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination4.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be --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 737f9e8de77d32d8f03e01ab5f98ec0cb28ec6478e68b10a65bdf5d745ac7455 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:54:14,438 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:54:14,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:54:14,485 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:54:14,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:54:14,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:54:14,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:54:14,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:54:14,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:54:14,508 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:54:14,509 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:54:14,510 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:54:14,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:54:14,513 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:54:14,515 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:54:14,518 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:54:14,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:54:14,520 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:54:14,529 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:54:14,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:54:14,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:54:14,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:54:14,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:54:14,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:54:14,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:54:14,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:54:14,549 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:54:14,551 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:54:14,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:54:14,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:54:14,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:54:14,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:54:14,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:54:14,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:54:14,558 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:54:14,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:54:14,559 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:54:14,559 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:54:14,560 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:54:14,561 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:54:14,561 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:54:14,562 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/config/svcomp-Overflow-64bit-Automizer_Default.epf [2021-10-21 19:54:14,603 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:54:14,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:54:14,604 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:54:14,604 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:54:14,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:54:14,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:54:14,606 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:54:14,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:54:14,607 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:54:14,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:54:14,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:54:14,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:54:14,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:54:14,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:54:14,609 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2021-10-21 19:54:14,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:54:14,609 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:54:14,609 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:54:14,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:54:14,610 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:54:14,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:54:14,610 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:54:14,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:54:14,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:54:14,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:54:14,611 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:54:14,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:54:14,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:54:14,612 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:54:14,612 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 737f9e8de77d32d8f03e01ab5f98ec0cb28ec6478e68b10a65bdf5d745ac7455 [2021-10-21 19:54:14,852 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:54:14,872 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:54:14,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:54:14,877 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:54:14,877 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:54:14,878 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted/NonTermination4.c [2021-10-21 19:54:14,940 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/data/0f5c42fc3/bfa67aaefa5842dc977d359e4d574dad/FLAG00f15312f [2021-10-21 19:54:15,342 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:54:15,342 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/sv-benchmarks/c/termination-crafted/NonTermination4.c [2021-10-21 19:54:15,347 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/data/0f5c42fc3/bfa67aaefa5842dc977d359e4d574dad/FLAG00f15312f [2021-10-21 19:54:15,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/data/0f5c42fc3/bfa67aaefa5842dc977d359e4d574dad [2021-10-21 19:54:15,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:54:15,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:54:15,762 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:54:15,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:54:15,765 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:54:15,766 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:15,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e224f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15, skipping insertion in model container [2021-10-21 19:54:15,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:15,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:54:15,786 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:54:15,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:54:15,934 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:54:15,952 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:54:15,987 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:54:15,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15 WrapperNode [2021-10-21 19:54:15,987 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:54:15,988 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:54:15,988 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:54:15,988 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:54:15,995 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:15,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:16,015 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:54:16,016 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:54:16,016 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:54:16,016 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:54:16,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:16,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:16,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:16,025 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:16,027 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:16,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:16,031 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:16,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:54:16,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:54:16,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:54:16,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:54:16,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15" (1/1) ... [2021-10-21 19:54:16,046 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:54:16,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:16,083 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:54:16,113 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:54:16,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:54:16,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:54:16,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:54:16,288 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 19:54:16,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:54:16 BoogieIcfgContainer [2021-10-21 19:54:16,291 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:54:16,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:54:16,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:54:16,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:54:16,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:54:15" (1/3) ... [2021-10-21 19:54:16,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9a9506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:54:16, skipping insertion in model container [2021-10-21 19:54:16,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:15" (2/3) ... [2021-10-21 19:54:16,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b9a9506 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:54:16, skipping insertion in model container [2021-10-21 19:54:16,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:54:16" (3/3) ... [2021-10-21 19:54:16,299 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2021-10-21 19:54:16,304 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:54:16,304 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-10-21 19:54:16,354 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:54:16,363 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-21 19:54:16,363 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-10-21 19:54:16,377 INFO L276 IsEmpty]: Start isEmpty. Operand has 14 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:16,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-10-21 19:54:16,382 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:16,382 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-10-21 19:54:16,383 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:16,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:16,388 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2021-10-21 19:54:16,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:16,397 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737612883] [2021-10-21 19:54:16,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:16,398 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:16,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:16,540 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:16,540 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737612883] [2021-10-21 19:54:16,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737612883] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:16,541 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:16,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 19:54:16,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301052267] [2021-10-21 19:54:16,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:54:16,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:16,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:54:16,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:54:16,560 INFO L87 Difference]: Start difference. First operand has 14 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-21 19:54:16,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:16,592 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2021-10-21 19:54:16,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:54:16,594 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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 3 [2021-10-21 19:54:16,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:16,601 INFO L225 Difference]: With dead ends: 22 [2021-10-21 19:54:16,601 INFO L226 Difference]: Without dead ends: 13 [2021-10-21 19:54:16,604 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 34.2ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:54:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-10-21 19:54:16,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2021-10-21 19:54:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 8 states have (on average 1.5) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-10-21 19:54:16,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-21 19:54:16,642 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2021-10-21 19:54:16,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:16,643 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-21 19:54:16,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 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) [2021-10-21 19:54:16,643 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-21 19:54:16,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-21 19:54:16,643 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:16,644 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-21 19:54:16,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:54:16,644 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:16,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:16,645 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2021-10-21 19:54:16,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:16,646 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382414216] [2021-10-21 19:54:16,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:16,646 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:16,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:16,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:16,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382414216] [2021-10-21 19:54:16,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382414216] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:16,665 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:16,665 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 19:54:16,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529316143] [2021-10-21 19:54:16,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:54:16,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:16,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:54:16,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:54:16,668 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-10-21 19:54:16,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:16,705 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2021-10-21 19:54:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:54:16,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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 [2021-10-21 19:54:16,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:16,706 INFO L225 Difference]: With dead ends: 12 [2021-10-21 19:54:16,707 INFO L226 Difference]: Without dead ends: 11 [2021-10-21 19:54:16,707 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:54:16,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2021-10-21 19:54:16,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2021-10-21 19:54:16,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11 states, 8 states have (on average 1.375) internal successors, (11), 10 states have internal predecessors, (11), 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) [2021-10-21 19:54:16,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2021-10-21 19:54:16,710 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2021-10-21 19:54:16,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:16,711 INFO L470 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2021-10-21 19:54:16,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 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) [2021-10-21 19:54:16,711 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2021-10-21 19:54:16,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-21 19:54:16,712 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:16,712 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-21 19:54:16,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-21 19:54:16,713 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:16,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:16,714 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2021-10-21 19:54:16,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:16,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331772238] [2021-10-21 19:54:16,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:16,715 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:16,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:16,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:16,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:16,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331772238] [2021-10-21 19:54:16,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331772238] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:16,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:16,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 19:54:16,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195745568] [2021-10-21 19:54:16,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:54:16,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:16,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:54:16,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:54:16,777 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:16,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:16,803 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2021-10-21 19:54:16,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:54:16,803 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-21 19:54:16,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:16,804 INFO L225 Difference]: With dead ends: 15 [2021-10-21 19:54:16,804 INFO L226 Difference]: Without dead ends: 14 [2021-10-21 19:54:16,805 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:54:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-21 19:54:16,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-21 19:54:16,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 10 states have (on average 1.3) internal successors, (13), 12 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:16,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-21 19:54:16,808 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2021-10-21 19:54:16,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:16,808 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-21 19:54:16,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:16,808 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-21 19:54:16,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-21 19:54:16,809 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:16,809 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-21 19:54:16,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-21 19:54:16,810 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:16,811 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2021-10-21 19:54:16,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:16,812 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717141156] [2021-10-21 19:54:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:16,812 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:16,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:16,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:16,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:16,852 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717141156] [2021-10-21 19:54:16,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717141156] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:16,852 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:16,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-10-21 19:54:16,853 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631682371] [2021-10-21 19:54:16,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-21 19:54:16,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:16,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-21 19:54:16,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:54:16,855 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:16,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:16,862 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2021-10-21 19:54:16,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-21 19:54:16,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-21 19:54:16,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:16,864 INFO L225 Difference]: With dead ends: 13 [2021-10-21 19:54:16,864 INFO L226 Difference]: Without dead ends: 12 [2021-10-21 19:54:16,864 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-21 19:54:16,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2021-10-21 19:54:16,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2021-10-21 19:54:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.2) internal successors, (12), 11 states have internal predecessors, (12), 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) [2021-10-21 19:54:16,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2021-10-21 19:54:16,868 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2021-10-21 19:54:16,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:16,868 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2021-10-21 19:54:16,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:16,869 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2021-10-21 19:54:16,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-21 19:54:16,869 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:16,869 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:16,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-21 19:54:16,870 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:16,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:16,871 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2021-10-21 19:54:16,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:16,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542325897] [2021-10-21 19:54:16,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:16,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:16,928 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:16,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:16,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542325897] [2021-10-21 19:54:16,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542325897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:16,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1990956933] [2021-10-21 19:54:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:16,930 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:16,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:16,938 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:16,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:54:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:16,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:54:16,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:17,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1990956933] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:17,073 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:17,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-21 19:54:17,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723553171] [2021-10-21 19:54:17,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:54:17,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:17,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:54:17,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:54:17,078 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:17,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:17,115 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-10-21 19:54:17,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:54:17,124 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-21 19:54:17,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:17,125 INFO L225 Difference]: With dead ends: 17 [2021-10-21 19:54:17,126 INFO L226 Difference]: Without dead ends: 16 [2021-10-21 19:54:17,126 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 37.7ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:54:17,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-10-21 19:54:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2021-10-21 19:54:17,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:17,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2021-10-21 19:54:17,134 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2021-10-21 19:54:17,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:17,135 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2021-10-21 19:54:17,135 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:17,135 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2021-10-21 19:54:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:54:17,136 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:17,136 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2021-10-21 19:54:17,163 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:17,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:17,337 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:17,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:17,339 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2021-10-21 19:54:17,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:17,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287941449] [2021-10-21 19:54:17,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:17,340 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:17,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:17,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:17,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287941449] [2021-10-21 19:54:17,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287941449] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:17,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810846399] [2021-10-21 19:54:17,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:17,411 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:17,411 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:17,416 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:17,427 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:54:17,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:17,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-21 19:54:17,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:17,492 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:17,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810846399] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:17,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:17,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2021-10-21 19:54:17,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408062018] [2021-10-21 19:54:17,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:54:17,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:17,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:54:17,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:54:17,495 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-21 19:54:17,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:17,507 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2021-10-21 19:54:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-21 19:54:17,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-21 19:54:17,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:17,509 INFO L225 Difference]: With dead ends: 19 [2021-10-21 19:54:17,509 INFO L226 Difference]: Without dead ends: 18 [2021-10-21 19:54:17,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:54:17,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-10-21 19:54:17,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2021-10-21 19:54:17,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) [2021-10-21 19:54:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2021-10-21 19:54:17,513 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2021-10-21 19:54:17,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:17,513 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2021-10-21 19:54:17,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 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) [2021-10-21 19:54:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2021-10-21 19:54:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-21 19:54:17,514 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:17,514 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2021-10-21 19:54:17,552 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:17,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:17,738 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:17,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:17,738 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2021-10-21 19:54:17,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:17,739 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693820447] [2021-10-21 19:54:17,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:17,739 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:17,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:17,812 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:17,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:17,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693820447] [2021-10-21 19:54:17,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693820447] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:17,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102302362] [2021-10-21 19:54:17,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:17,814 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:17,814 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:17,825 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:17,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:54:17,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:17,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:17,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:54:17,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:17,939 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102302362] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:17,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:17,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-21 19:54:17,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714765039] [2021-10-21 19:54:17,940 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:54:17,940 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:17,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:54:17,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:54:17,941 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:17,962 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-21 19:54:17,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:54:17,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-21 19:54:17,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:17,963 INFO L225 Difference]: With dead ends: 22 [2021-10-21 19:54:17,963 INFO L226 Difference]: Without dead ends: 21 [2021-10-21 19:54:17,964 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 18.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:54:17,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2021-10-21 19:54:17,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2021-10-21 19:54:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:17,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2021-10-21 19:54:17,968 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2021-10-21 19:54:17,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:17,969 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2021-10-21 19:54:17,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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) [2021-10-21 19:54:17,969 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2021-10-21 19:54:17,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:54:17,970 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:17,970 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2021-10-21 19:54:18,007 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:18,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-21 19:54:18,190 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:18,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:18,191 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2021-10-21 19:54:18,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:18,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387955488] [2021-10-21 19:54:18,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:18,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:18,230 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:18,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:18,230 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387955488] [2021-10-21 19:54:18,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387955488] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:18,231 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1625973313] [2021-10-21 19:54:18,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:18,231 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:18,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:18,232 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:18,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:54:18,281 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:18,282 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:18,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-10-21 19:54:18,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:18,354 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:18,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1625973313] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:18,356 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:18,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2021-10-21 19:54:18,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500990125] [2021-10-21 19:54:18,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:54:18,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:18,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:54:18,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:54:18,359 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:18,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:18,390 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2021-10-21 19:54:18,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:54:18,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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 15 [2021-10-21 19:54:18,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:18,393 INFO L225 Difference]: With dead ends: 24 [2021-10-21 19:54:18,393 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 19:54:18,394 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.6ms TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:54:18,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 19:54:18,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2021-10-21 19:54:18,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 21 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) [2021-10-21 19:54:18,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-10-21 19:54:18,411 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2021-10-21 19:54:18,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:18,411 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-10-21 19:54:18,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 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) [2021-10-21 19:54:18,412 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-10-21 19:54:18,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-21 19:54:18,413 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:18,413 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2021-10-21 19:54:18,453 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:18,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:18,638 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:18,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:18,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2021-10-21 19:54:18,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:18,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941684260] [2021-10-21 19:54:18,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:18,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:18,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:18,695 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:18,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:18,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941684260] [2021-10-21 19:54:18,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941684260] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:18,696 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672479722] [2021-10-21 19:54:18,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:54:18,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:18,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:18,710 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:18,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:54:18,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 19:54:18,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:18,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:54:18,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:18,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672479722] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:18,873 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:18,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:54:18,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907225818] [2021-10-21 19:54:18,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:54:18,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:18,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:54:18,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:54:18,877 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2021-10-21 19:54:18,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:18,901 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2021-10-21 19:54:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:54:18,902 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 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 18 [2021-10-21 19:54:18,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:18,904 INFO L225 Difference]: With dead ends: 27 [2021-10-21 19:54:18,904 INFO L226 Difference]: Without dead ends: 26 [2021-10-21 19:54:18,906 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 27.2ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:54:18,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-21 19:54:18,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2021-10-21 19:54:18,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 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) [2021-10-21 19:54:18,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2021-10-21 19:54:18,914 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2021-10-21 19:54:18,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:18,914 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2021-10-21 19:54:18,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 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) [2021-10-21 19:54:18,915 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2021-10-21 19:54:18,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-21 19:54:18,916 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:18,916 INFO L512 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2021-10-21 19:54:18,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:19,133 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:19,134 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:19,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:19,134 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2021-10-21 19:54:19,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:19,135 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772417367] [2021-10-21 19:54:19,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:19,135 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:19,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:19,205 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:19,205 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:19,205 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772417367] [2021-10-21 19:54:19,205 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772417367] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:19,206 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [361679280] [2021-10-21 19:54:19,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:54:19,206 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:19,206 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:19,215 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:19,235 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:54:19,277 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 19:54:19,277 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:19,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-21 19:54:19,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:19,390 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:19,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [361679280] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:19,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:19,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2021-10-21 19:54:19,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653730103] [2021-10-21 19:54:19,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:54:19,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:19,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:54:19,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:54:19,400 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:19,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:19,431 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2021-10-21 19:54:19,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:54:19,431 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2021-10-21 19:54:19,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:19,432 INFO L225 Difference]: With dead ends: 29 [2021-10-21 19:54:19,432 INFO L226 Difference]: Without dead ends: 28 [2021-10-21 19:54:19,432 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 35.4ms TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:54:19,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-21 19:54:19,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-10-21 19:54:19,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 25 states have (on average 1.08) internal successors, (27), 26 states have internal predecessors, (27), 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) [2021-10-21 19:54:19,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2021-10-21 19:54:19,436 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2021-10-21 19:54:19,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:19,436 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2021-10-21 19:54:19,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:19,437 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2021-10-21 19:54:19,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-10-21 19:54:19,437 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:19,437 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2021-10-21 19:54:19,472 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-10-21 19:54:19,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 19:54:19,638 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:19,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:19,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2021-10-21 19:54:19,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:19,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303120117] [2021-10-21 19:54:19,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:19,639 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:19,719 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:19,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:19,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303120117] [2021-10-21 19:54:19,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303120117] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:19,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416946151] [2021-10-21 19:54:19,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:54:19,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:19,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:19,726 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:19,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:54:19,800 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:54:19,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:19,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:54:19,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:19,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1416946151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:19,901 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:19,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-21 19:54:19,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717157615] [2021-10-21 19:54:19,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:54:19,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:19,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:54:19,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:54:19,904 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2021-10-21 19:54:19,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:19,939 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-10-21 19:54:19,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:54:19,940 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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 23 [2021-10-21 19:54:19,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:19,941 INFO L225 Difference]: With dead ends: 32 [2021-10-21 19:54:19,941 INFO L226 Difference]: Without dead ends: 31 [2021-10-21 19:54:19,941 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 37.1ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:54:19,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-10-21 19:54:19,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-10-21 19:54:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.0714285714285714) internal successors, (30), 29 states have internal predecessors, (30), 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) [2021-10-21 19:54:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2021-10-21 19:54:19,945 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2021-10-21 19:54:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:19,945 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2021-10-21 19:54:19,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.8333333333333335) internal successors, (23), 6 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) [2021-10-21 19:54:19,945 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2021-10-21 19:54:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-21 19:54:19,946 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:19,946 INFO L512 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2021-10-21 19:54:19,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:20,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-21 19:54:20,162 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:20,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:20,162 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2021-10-21 19:54:20,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:20,163 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288437398] [2021-10-21 19:54:20,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:20,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:20,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:20,207 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:20,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:20,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288437398] [2021-10-21 19:54:20,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288437398] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:20,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395095335] [2021-10-21 19:54:20,208 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:54:20,208 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:20,208 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:20,209 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:20,240 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:54:20,286 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:54:20,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:20,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2021-10-21 19:54:20,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:20,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395095335] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:20,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:20,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2021-10-21 19:54:20,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685644190] [2021-10-21 19:54:20,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-21 19:54:20,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:20,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-21 19:54:20,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:54:20,390 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 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) [2021-10-21 19:54:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:20,414 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-21 19:54:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-21 19:54:20,415 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 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 25 [2021-10-21 19:54:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:20,416 INFO L225 Difference]: With dead ends: 34 [2021-10-21 19:54:20,416 INFO L226 Difference]: Without dead ends: 33 [2021-10-21 19:54:20,416 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 32.7ms TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:54:20,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-21 19:54:20,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2021-10-21 19:54:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 30 states have (on average 1.0666666666666667) internal successors, (32), 31 states have internal predecessors, (32), 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) [2021-10-21 19:54:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2021-10-21 19:54:20,420 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2021-10-21 19:54:20,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:20,420 INFO L470 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2021-10-21 19:54:20,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 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) [2021-10-21 19:54:20,420 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2021-10-21 19:54:20,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-21 19:54:20,421 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:20,421 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2021-10-21 19:54:20,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:20,641 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:20,642 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:20,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:20,642 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2021-10-21 19:54:20,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:20,642 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519249703] [2021-10-21 19:54:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:20,643 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:20,695 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:20,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:20,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519249703] [2021-10-21 19:54:20,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519249703] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:20,695 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1359238020] [2021-10-21 19:54:20,695 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:54:20,696 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:20,696 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:20,696 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:20,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:54:20,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-21 19:54:20,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:20,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:54:20,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:20,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1359238020] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:20,897 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:20,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-21 19:54:20,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92250915] [2021-10-21 19:54:20,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:54:20,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:20,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:54:20,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:54:20,900 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 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) [2021-10-21 19:54:20,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:20,930 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2021-10-21 19:54:20,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:54:20,930 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 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 28 [2021-10-21 19:54:20,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:20,933 INFO L225 Difference]: With dead ends: 37 [2021-10-21 19:54:20,933 INFO L226 Difference]: Without dead ends: 36 [2021-10-21 19:54:20,934 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 46.2ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:54:20,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2021-10-21 19:54:20,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-10-21 19:54:20,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 34 states have internal predecessors, (35), 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) [2021-10-21 19:54:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2021-10-21 19:54:20,949 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2021-10-21 19:54:20,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:20,950 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2021-10-21 19:54:20,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 7 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) [2021-10-21 19:54:20,950 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2021-10-21 19:54:20,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-10-21 19:54:20,951 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:20,951 INFO L512 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2021-10-21 19:54:20,972 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:21,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-10-21 19:54:21,172 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:21,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:21,173 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2021-10-21 19:54:21,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:21,173 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523522323] [2021-10-21 19:54:21,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:21,173 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:21,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:21,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523522323] [2021-10-21 19:54:21,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523522323] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:21,239 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [271021767] [2021-10-21 19:54:21,239 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:54:21,239 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:21,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:21,240 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:21,251 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:54:21,324 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-21 19:54:21,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:21,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:54:21,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:21,479 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:21,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [271021767] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:21,479 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:21,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-10-21 19:54:21,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968237187] [2021-10-21 19:54:21,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:54:21,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:21,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:54:21,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:54:21,483 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2021-10-21 19:54:21,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:21,507 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-10-21 19:54:21,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-21 19:54:21,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2021-10-21 19:54:21,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:21,508 INFO L225 Difference]: With dead ends: 39 [2021-10-21 19:54:21,509 INFO L226 Difference]: Without dead ends: 38 [2021-10-21 19:54:21,509 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 45.5ms TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:54:21,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-21 19:54:21,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2021-10-21 19:54:21,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 35 states have (on average 1.0571428571428572) internal successors, (37), 36 states have internal predecessors, (37), 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) [2021-10-21 19:54:21,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2021-10-21 19:54:21,516 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2021-10-21 19:54:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:21,516 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2021-10-21 19:54:21,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 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) [2021-10-21 19:54:21,517 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2021-10-21 19:54:21,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-10-21 19:54:21,521 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:21,521 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2021-10-21 19:54:21,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:21,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:54:21,735 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:21,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:21,735 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2021-10-21 19:54:21,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:21,735 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742651461] [2021-10-21 19:54:21,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:21,736 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:21,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:21,797 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:21,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742651461] [2021-10-21 19:54:21,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742651461] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:21,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1942352277] [2021-10-21 19:54:21,798 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:54:21,798 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:21,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:21,809 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:21,814 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:54:21,907 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-21 19:54:21,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:21,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:54:21,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:22,046 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:22,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1942352277] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:22,047 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:22,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-21 19:54:22,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499340908] [2021-10-21 19:54:22,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:54:22,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:22,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:54:22,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:54:22,050 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:22,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:22,079 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-21 19:54:22,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:54:22,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2021-10-21 19:54:22,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:22,087 INFO L225 Difference]: With dead ends: 42 [2021-10-21 19:54:22,087 INFO L226 Difference]: Without dead ends: 41 [2021-10-21 19:54:22,090 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 55.7ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:54:22,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-21 19:54:22,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2021-10-21 19:54:22,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 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) [2021-10-21 19:54:22,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-10-21 19:54:22,095 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2021-10-21 19:54:22,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:22,096 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-10-21 19:54:22,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.125) internal successors, (33), 8 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:22,096 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-10-21 19:54:22,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-10-21 19:54:22,101 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:22,101 INFO L512 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2021-10-21 19:54:22,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:22,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:22,314 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:22,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:22,315 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2021-10-21 19:54:22,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:22,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693458366] [2021-10-21 19:54:22,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:22,315 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:22,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:22,391 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:22,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:22,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693458366] [2021-10-21 19:54:22,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693458366] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:22,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063141734] [2021-10-21 19:54:22,392 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:54:22,392 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:22,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:22,398 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:22,399 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 19:54:22,499 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-21 19:54:22,499 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:22,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-21 19:54:22,501 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:22,630 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:22,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063141734] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:22,630 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:22,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2021-10-21 19:54:22,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275097509] [2021-10-21 19:54:22,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:54:22,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:22,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:54:22,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:54:22,632 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-10-21 19:54:22,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:22,666 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-10-21 19:54:22,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:54:22,667 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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 35 [2021-10-21 19:54:22,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:22,668 INFO L225 Difference]: With dead ends: 44 [2021-10-21 19:54:22,668 INFO L226 Difference]: Without dead ends: 43 [2021-10-21 19:54:22,668 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 58.9ms TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:54:22,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-21 19:54:22,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2021-10-21 19:54:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 40 states have (on average 1.05) internal successors, (42), 41 states have internal predecessors, (42), 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) [2021-10-21 19:54:22,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2021-10-21 19:54:22,672 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2021-10-21 19:54:22,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:22,673 INFO L470 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2021-10-21 19:54:22,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 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) [2021-10-21 19:54:22,673 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2021-10-21 19:54:22,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-10-21 19:54:22,674 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:22,674 INFO L512 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2021-10-21 19:54:22,705 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:22,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 19:54:22,898 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:22,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:22,898 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2021-10-21 19:54:22,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:22,898 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693325252] [2021-10-21 19:54:22,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:22,898 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:22,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:22,962 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:22,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:22,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693325252] [2021-10-21 19:54:22,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693325252] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:22,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882234544] [2021-10-21 19:54:22,963 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:54:22,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:22,963 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:22,970 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:22,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:54:23,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:23,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:54:23,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:23,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882234544] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:23,271 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:23,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-21 19:54:23,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013457808] [2021-10-21 19:54:23,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:54:23,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:23,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:54:23,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:54:23,272 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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) [2021-10-21 19:54:23,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:23,319 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-10-21 19:54:23,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:54:23,320 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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 38 [2021-10-21 19:54:23,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:23,320 INFO L225 Difference]: With dead ends: 47 [2021-10-21 19:54:23,321 INFO L226 Difference]: Without dead ends: 46 [2021-10-21 19:54:23,321 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 85.3ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:54:23,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-10-21 19:54:23,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2021-10-21 19:54:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 43 states have (on average 1.0465116279069768) internal successors, (45), 44 states have internal predecessors, (45), 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) [2021-10-21 19:54:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2021-10-21 19:54:23,331 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2021-10-21 19:54:23,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:23,331 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2021-10-21 19:54:23,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.222222222222222) internal successors, (38), 9 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) [2021-10-21 19:54:23,331 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2021-10-21 19:54:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2021-10-21 19:54:23,332 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:23,332 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2021-10-21 19:54:23,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:23,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-10-21 19:54:23,554 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:23,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:23,554 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2021-10-21 19:54:23,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:23,554 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335439458] [2021-10-21 19:54:23,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:23,555 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:23,626 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:23,626 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:23,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335439458] [2021-10-21 19:54:23,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335439458] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:23,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765593245] [2021-10-21 19:54:23,627 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:54:23,627 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:23,627 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:23,637 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:23,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 19:54:23,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:23,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-21 19:54:23,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:23,894 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:23,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765593245] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:23,895 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:23,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2021-10-21 19:54:23,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380024847] [2021-10-21 19:54:23,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-21 19:54:23,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:23,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-21 19:54:23,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:54:23,900 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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) [2021-10-21 19:54:23,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:23,928 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2021-10-21 19:54:23,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-21 19:54:23,929 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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 40 [2021-10-21 19:54:23,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:23,930 INFO L225 Difference]: With dead ends: 49 [2021-10-21 19:54:23,930 INFO L226 Difference]: Without dead ends: 48 [2021-10-21 19:54:23,930 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 79.9ms TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2021-10-21 19:54:23,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-10-21 19:54:23,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2021-10-21 19:54:23,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 45 states have (on average 1.0444444444444445) internal successors, (47), 46 states have internal predecessors, (47), 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) [2021-10-21 19:54:23,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-10-21 19:54:23,934 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2021-10-21 19:54:23,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:23,934 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-10-21 19:54:23,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 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) [2021-10-21 19:54:23,935 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-10-21 19:54:23,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-10-21 19:54:23,936 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:23,936 INFO L512 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2021-10-21 19:54:23,974 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:24,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-10-21 19:54:24,162 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:24,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:24,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2021-10-21 19:54:24,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:24,162 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643927675] [2021-10-21 19:54:24,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:24,163 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:24,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:24,236 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:24,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:24,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643927675] [2021-10-21 19:54:24,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643927675] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:24,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2068174587] [2021-10-21 19:54:24,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:24,237 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:24,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:24,238 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:24,261 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 19:54:24,375 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:24,375 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:24,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:54:24,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:24,578 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:24,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2068174587] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:24,578 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:24,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-21 19:54:24,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974674020] [2021-10-21 19:54:24,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:54:24,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:24,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:54:24,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:54:24,581 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 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) [2021-10-21 19:54:24,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:24,626 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2021-10-21 19:54:24,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:54:24,627 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-10-21 19:54:24,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:24,627 INFO L225 Difference]: With dead ends: 52 [2021-10-21 19:54:24,627 INFO L226 Difference]: Without dead ends: 51 [2021-10-21 19:54:24,629 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 95.5ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:54:24,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-10-21 19:54:24,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2021-10-21 19:54:24,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 49 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) [2021-10-21 19:54:24,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-10-21 19:54:24,640 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2021-10-21 19:54:24,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:24,640 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-10-21 19:54:24,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.3) internal successors, (43), 10 states have internal predecessors, (43), 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) [2021-10-21 19:54:24,641 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-10-21 19:54:24,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-10-21 19:54:24,641 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:24,641 INFO L512 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2021-10-21 19:54:24,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:24,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:24,842 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:24,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:24,842 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2021-10-21 19:54:24,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:24,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025200547] [2021-10-21 19:54:24,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:24,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:24,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:24,934 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:24,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:24,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025200547] [2021-10-21 19:54:24,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025200547] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:24,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [940549748] [2021-10-21 19:54:24,935 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:24,935 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:24,935 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:24,936 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:24,954 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-10-21 19:54:25,078 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:25,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:25,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:54:25,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:25,278 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:25,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [940549748] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:25,279 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:25,279 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2021-10-21 19:54:25,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518716938] [2021-10-21 19:54:25,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:54:25,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:25,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:54:25,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:54:25,280 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2021-10-21 19:54:25,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:25,317 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-10-21 19:54:25,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:54:25,318 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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 45 [2021-10-21 19:54:25,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:25,318 INFO L225 Difference]: With dead ends: 54 [2021-10-21 19:54:25,318 INFO L226 Difference]: Without dead ends: 53 [2021-10-21 19:54:25,319 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 86.3ms TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:54:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-21 19:54:25,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2021-10-21 19:54:25,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 50 states have (on average 1.04) internal successors, (52), 51 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) [2021-10-21 19:54:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-10-21 19:54:25,322 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2021-10-21 19:54:25,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:25,322 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-10-21 19:54:25,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.5) internal successors, (45), 10 states have internal predecessors, (45), 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) [2021-10-21 19:54:25,323 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-10-21 19:54:25,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-10-21 19:54:25,323 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:25,324 INFO L512 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2021-10-21 19:54:25,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:25,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:25,534 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:25,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:25,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2021-10-21 19:54:25,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:25,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662514805] [2021-10-21 19:54:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:25,534 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:25,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:25,630 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:25,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:25,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662514805] [2021-10-21 19:54:25,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662514805] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:25,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010544441] [2021-10-21 19:54:25,631 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:54:25,631 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:25,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:25,632 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:25,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-10-21 19:54:25,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-21 19:54:25,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:25,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:54:25,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:25,987 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:25,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1010544441] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:25,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:25,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-21 19:54:25,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036214335] [2021-10-21 19:54:25,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:54:25,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:25,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:54:25,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:54:25,989 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:26,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:26,045 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2021-10-21 19:54:26,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:54:26,046 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-10-21 19:54:26,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:26,046 INFO L225 Difference]: With dead ends: 57 [2021-10-21 19:54:26,046 INFO L226 Difference]: Without dead ends: 56 [2021-10-21 19:54:26,047 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 109.4ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:54:26,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-10-21 19:54:26,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2021-10-21 19:54:26,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55 states, 53 states have (on average 1.0377358490566038) internal successors, (55), 54 states have internal predecessors, (55), 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) [2021-10-21 19:54:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2021-10-21 19:54:26,050 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2021-10-21 19:54:26,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:26,051 INFO L470 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2021-10-21 19:54:26,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.363636363636363) internal successors, (48), 11 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:26,051 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2021-10-21 19:54:26,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-10-21 19:54:26,051 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:26,051 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2021-10-21 19:54:26,090 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:26,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:26,262 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:26,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:26,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2021-10-21 19:54:26,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:26,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574560713] [2021-10-21 19:54:26,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:26,263 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:26,358 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:26,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:26,358 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574560713] [2021-10-21 19:54:26,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574560713] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:26,359 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [348957843] [2021-10-21 19:54:26,359 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:54:26,359 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:26,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:26,365 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:26,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-10-21 19:54:26,544 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2021-10-21 19:54:26,544 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:26,545 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:54:26,547 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:26,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [348957843] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:26,775 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:26,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2021-10-21 19:54:26,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982625685] [2021-10-21 19:54:26,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:54:26,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:26,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:54:26,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:54:26,777 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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) [2021-10-21 19:54:26,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:26,804 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2021-10-21 19:54:26,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:54:26,805 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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) Word has length 50 [2021-10-21 19:54:26,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:26,806 INFO L225 Difference]: With dead ends: 59 [2021-10-21 19:54:26,806 INFO L226 Difference]: Without dead ends: 58 [2021-10-21 19:54:26,806 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 114.0ms TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:54:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-10-21 19:54:26,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2021-10-21 19:54:26,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.0363636363636364) internal successors, (57), 56 states have internal predecessors, (57), 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) [2021-10-21 19:54:26,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2021-10-21 19:54:26,809 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2021-10-21 19:54:26,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:26,810 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2021-10-21 19:54:26,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 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) [2021-10-21 19:54:26,810 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2021-10-21 19:54:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-10-21 19:54:26,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:26,811 INFO L512 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2021-10-21 19:54:26,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:27,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:27,026 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:27,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:27,026 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2021-10-21 19:54:27,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:27,026 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307717896] [2021-10-21 19:54:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:27,027 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:27,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:27,130 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:27,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:27,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307717896] [2021-10-21 19:54:27,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307717896] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:27,130 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [564886180] [2021-10-21 19:54:27,131 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:54:27,131 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:27,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:27,132 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:27,137 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-10-21 19:54:27,309 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:54:27,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:27,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:54:27,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:27,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [564886180] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:27,558 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:27,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-21 19:54:27,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336194090] [2021-10-21 19:54:27,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:54:27,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:27,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:54:27,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:54:27,559 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 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) [2021-10-21 19:54:27,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:27,599 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2021-10-21 19:54:27,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:54:27,599 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 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) Word has length 53 [2021-10-21 19:54:27,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:27,600 INFO L225 Difference]: With dead ends: 62 [2021-10-21 19:54:27,600 INFO L226 Difference]: Without dead ends: 61 [2021-10-21 19:54:27,600 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 123.6ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:54:27,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-21 19:54:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2021-10-21 19:54:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 58 states have (on average 1.0344827586206897) internal successors, (60), 59 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) [2021-10-21 19:54:27,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2021-10-21 19:54:27,603 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2021-10-21 19:54:27,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:27,603 INFO L470 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2021-10-21 19:54:27,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.416666666666667) internal successors, (53), 12 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) [2021-10-21 19:54:27,604 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2021-10-21 19:54:27,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-10-21 19:54:27,604 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:27,605 INFO L512 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2021-10-21 19:54:27,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:27,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:27,826 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:27,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:27,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2021-10-21 19:54:27,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:27,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698440897] [2021-10-21 19:54:27,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:27,826 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:27,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:27,923 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:27,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:27,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698440897] [2021-10-21 19:54:27,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698440897] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:27,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1738676637] [2021-10-21 19:54:27,924 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:54:27,924 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:27,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:27,925 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:27,953 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-10-21 19:54:28,173 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:54:28,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:28,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-21 19:54:28,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:28,391 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:28,391 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1738676637] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:28,391 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:28,391 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2021-10-21 19:54:28,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708255906] [2021-10-21 19:54:28,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-10-21 19:54:28,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:28,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-10-21 19:54:28,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:54:28,393 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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) [2021-10-21 19:54:28,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:28,424 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2021-10-21 19:54:28,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:54:28,424 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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 [2021-10-21 19:54:28,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:28,425 INFO L225 Difference]: With dead ends: 64 [2021-10-21 19:54:28,425 INFO L226 Difference]: Without dead ends: 63 [2021-10-21 19:54:28,425 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 122.8ms TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-10-21 19:54:28,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2021-10-21 19:54:28,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2021-10-21 19:54:28,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 60 states have (on average 1.0333333333333334) internal successors, (62), 61 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) [2021-10-21 19:54:28,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2021-10-21 19:54:28,428 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2021-10-21 19:54:28,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:28,429 INFO L470 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2021-10-21 19:54:28,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 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) [2021-10-21 19:54:28,429 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2021-10-21 19:54:28,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-10-21 19:54:28,430 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:28,430 INFO L512 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2021-10-21 19:54:28,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:28,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2021-10-21 19:54:28,654 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:28,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:28,654 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2021-10-21 19:54:28,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:28,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002308871] [2021-10-21 19:54:28,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:28,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:28,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:28,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:28,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002308871] [2021-10-21 19:54:28,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002308871] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:28,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [834637163] [2021-10-21 19:54:28,757 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:54:28,758 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:28,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:28,759 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:28,780 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-10-21 19:54:28,979 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-21 19:54:28,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:28,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:54:28,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:29,231 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:29,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [834637163] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:29,231 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:29,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-21 19:54:29,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055105390] [2021-10-21 19:54:29,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:54:29,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:29,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:54:29,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:54:29,233 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 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) [2021-10-21 19:54:29,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:29,294 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2021-10-21 19:54:29,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:54:29,295 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2021-10-21 19:54:29,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:29,296 INFO L225 Difference]: With dead ends: 67 [2021-10-21 19:54:29,296 INFO L226 Difference]: Without dead ends: 66 [2021-10-21 19:54:29,296 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 127.6ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:54:29,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-21 19:54:29,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2021-10-21 19:54:29,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 63 states have (on average 1.0317460317460319) internal successors, (65), 64 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) [2021-10-21 19:54:29,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2021-10-21 19:54:29,300 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2021-10-21 19:54:29,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:29,300 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2021-10-21 19:54:29,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.461538461538462) internal successors, (58), 13 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) [2021-10-21 19:54:29,300 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2021-10-21 19:54:29,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-10-21 19:54:29,301 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:29,301 INFO L512 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2021-10-21 19:54:29,336 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:29,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2021-10-21 19:54:29,530 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:29,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:29,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2021-10-21 19:54:29,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:29,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404349340] [2021-10-21 19:54:29,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:29,530 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:29,633 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:29,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:29,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404349340] [2021-10-21 19:54:29,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404349340] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:29,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453124958] [2021-10-21 19:54:29,634 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:54:29,634 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:29,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:29,635 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:29,656 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-10-21 19:54:29,885 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2021-10-21 19:54:29,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:29,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2021-10-21 19:54:29,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:30,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453124958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:30,141 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:30,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2021-10-21 19:54:30,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289083930] [2021-10-21 19:54:30,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-10-21 19:54:30,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:30,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-10-21 19:54:30,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:54:30,142 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 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) [2021-10-21 19:54:30,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:30,176 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2021-10-21 19:54:30,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:54:30,177 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 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 60 [2021-10-21 19:54:30,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:30,177 INFO L225 Difference]: With dead ends: 69 [2021-10-21 19:54:30,178 INFO L226 Difference]: Without dead ends: 68 [2021-10-21 19:54:30,178 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 130.6ms TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:54:30,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2021-10-21 19:54:30,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2021-10-21 19:54:30,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 65 states have (on average 1.0307692307692307) internal successors, (67), 66 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) [2021-10-21 19:54:30,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2021-10-21 19:54:30,181 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2021-10-21 19:54:30,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:30,181 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2021-10-21 19:54:30,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 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) [2021-10-21 19:54:30,181 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2021-10-21 19:54:30,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-10-21 19:54:30,182 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:30,182 INFO L512 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2021-10-21 19:54:30,220 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:30,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-10-21 19:54:30,406 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:30,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:30,406 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2021-10-21 19:54:30,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:30,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739283691] [2021-10-21 19:54:30,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:30,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:30,527 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:30,528 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:30,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739283691] [2021-10-21 19:54:30,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739283691] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:30,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244520091] [2021-10-21 19:54:30,528 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:54:30,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:30,529 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:30,529 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:30,545 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-10-21 19:54:30,790 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-21 19:54:30,790 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:30,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:54:30,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:31,055 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:31,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244520091] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:31,055 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:31,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-21 19:54:31,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087257725] [2021-10-21 19:54:31,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:54:31,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:31,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:54:31,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:54:31,056 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 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) [2021-10-21 19:54:31,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:31,114 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2021-10-21 19:54:31,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:54:31,114 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 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) Word has length 63 [2021-10-21 19:54:31,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:31,115 INFO L225 Difference]: With dead ends: 72 [2021-10-21 19:54:31,115 INFO L226 Difference]: Without dead ends: 71 [2021-10-21 19:54:31,116 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 166.6ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:54:31,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-21 19:54:31,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2021-10-21 19:54:31,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 68 states have (on average 1.0294117647058822) internal successors, (70), 69 states have internal predecessors, (70), 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) [2021-10-21 19:54:31,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2021-10-21 19:54:31,123 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2021-10-21 19:54:31,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:31,124 INFO L470 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2021-10-21 19:54:31,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.5) internal successors, (63), 14 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) [2021-10-21 19:54:31,132 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2021-10-21 19:54:31,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-10-21 19:54:31,133 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:31,133 INFO L512 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2021-10-21 19:54:31,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:31,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-10-21 19:54:31,354 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:31,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:31,354 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2021-10-21 19:54:31,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:31,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725041969] [2021-10-21 19:54:31,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:31,354 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:31,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:31,471 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:31,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:31,471 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725041969] [2021-10-21 19:54:31,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725041969] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:31,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566718198] [2021-10-21 19:54:31,472 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:54:31,472 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:31,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:31,473 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:31,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-10-21 19:54:31,733 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2021-10-21 19:54:31,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:31,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2021-10-21 19:54:31,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:31,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566718198] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:31,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:31,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2021-10-21 19:54:31,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83060616] [2021-10-21 19:54:31,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:54:31,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:31,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:54:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:54:31,989 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 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) [2021-10-21 19:54:32,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:32,028 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2021-10-21 19:54:32,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-10-21 19:54:32,028 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 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) Word has length 65 [2021-10-21 19:54:32,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:32,029 INFO L225 Difference]: With dead ends: 74 [2021-10-21 19:54:32,029 INFO L226 Difference]: Without dead ends: 73 [2021-10-21 19:54:32,030 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 148.5ms TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:54:32,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-21 19:54:32,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2021-10-21 19:54:32,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 72 states, 70 states have (on average 1.0285714285714285) internal successors, (72), 71 states have internal predecessors, (72), 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) [2021-10-21 19:54:32,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2021-10-21 19:54:32,033 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2021-10-21 19:54:32,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:32,033 INFO L470 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2021-10-21 19:54:32,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 4.642857142857143) internal successors, (65), 14 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) [2021-10-21 19:54:32,034 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2021-10-21 19:54:32,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-21 19:54:32,035 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:32,035 INFO L512 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2021-10-21 19:54:32,073 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:32,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-10-21 19:54:32,249 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:32,249 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2021-10-21 19:54:32,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:32,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391702455] [2021-10-21 19:54:32,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:32,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:32,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:32,389 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:32,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:32,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391702455] [2021-10-21 19:54:32,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391702455] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:32,390 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090004472] [2021-10-21 19:54:32,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:54:32,390 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:32,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:32,391 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:32,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-10-21 19:54:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:32,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:54:32,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:32,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090004472] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:32,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:32,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-21 19:54:32,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411669897] [2021-10-21 19:54:32,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 19:54:32,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:32,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:54:32,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:54:32,965 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 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) [2021-10-21 19:54:33,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:33,017 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2021-10-21 19:54:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:54:33,017 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-21 19:54:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:33,018 INFO L225 Difference]: With dead ends: 77 [2021-10-21 19:54:33,018 INFO L226 Difference]: Without dead ends: 76 [2021-10-21 19:54:33,019 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 183.4ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:54:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-21 19:54:33,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2021-10-21 19:54:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75 states, 73 states have (on average 1.0273972602739727) internal successors, (75), 74 states have internal predecessors, (75), 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) [2021-10-21 19:54:33,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2021-10-21 19:54:33,022 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2021-10-21 19:54:33,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:33,022 INFO L470 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2021-10-21 19:54:33,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.533333333333333) internal successors, (68), 15 states have internal predecessors, (68), 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) [2021-10-21 19:54:33,023 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2021-10-21 19:54:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-10-21 19:54:33,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:33,024 INFO L512 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2021-10-21 19:54:33,058 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:33,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:33,244 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:33,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:33,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2021-10-21 19:54:33,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:33,245 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775840956] [2021-10-21 19:54:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:33,245 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:33,386 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:33,386 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:33,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775840956] [2021-10-21 19:54:33,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775840956] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:33,386 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210967329] [2021-10-21 19:54:33,386 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:54:33,386 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:33,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:33,390 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:33,405 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-10-21 19:54:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:33,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2021-10-21 19:54:33,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:33,992 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:33,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210967329] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:33,993 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:33,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2021-10-21 19:54:33,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374397716] [2021-10-21 19:54:33,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-21 19:54:33,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:33,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-21 19:54:33,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:54:33,994 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand has 16 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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) [2021-10-21 19:54:34,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:34,040 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2021-10-21 19:54:34,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:54:34,040 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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 70 [2021-10-21 19:54:34,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:34,041 INFO L225 Difference]: With dead ends: 79 [2021-10-21 19:54:34,041 INFO L226 Difference]: Without dead ends: 78 [2021-10-21 19:54:34,041 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 181.8ms TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2021-10-21 19:54:34,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-10-21 19:54:34,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2021-10-21 19:54:34,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 75 states have (on average 1.0266666666666666) internal successors, (77), 76 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) [2021-10-21 19:54:34,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2021-10-21 19:54:34,045 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2021-10-21 19:54:34,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:34,045 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2021-10-21 19:54:34,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.666666666666667) internal successors, (70), 15 states have internal predecessors, (70), 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) [2021-10-21 19:54:34,046 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2021-10-21 19:54:34,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-10-21 19:54:34,047 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:34,047 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2021-10-21 19:54:34,076 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:34,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:34,270 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:34,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:34,270 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2021-10-21 19:54:34,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:34,270 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890582453] [2021-10-21 19:54:34,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:34,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:34,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:34,426 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:34,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:34,426 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890582453] [2021-10-21 19:54:34,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890582453] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:34,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757273904] [2021-10-21 19:54:34,427 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:34,427 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:34,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:34,430 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:34,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-10-21 19:54:34,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:34,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:34,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:54:34,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:35,055 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:35,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [757273904] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:35,056 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:35,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-10-21 19:54:35,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024348808] [2021-10-21 19:54:35,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 19:54:35,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:35,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:54:35,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:54:35,057 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand has 17 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 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) [2021-10-21 19:54:35,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:35,100 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2021-10-21 19:54:35,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 19:54:35,100 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 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 73 [2021-10-21 19:54:35,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:35,101 INFO L225 Difference]: With dead ends: 82 [2021-10-21 19:54:35,101 INFO L226 Difference]: Without dead ends: 81 [2021-10-21 19:54:35,101 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 197.9ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:54:35,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-10-21 19:54:35,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2021-10-21 19:54:35,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 78 states have (on average 1.0256410256410255) internal successors, (80), 79 states have internal predecessors, (80), 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) [2021-10-21 19:54:35,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2021-10-21 19:54:35,105 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2021-10-21 19:54:35,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:35,105 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2021-10-21 19:54:35,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.5625) internal successors, (73), 16 states have internal predecessors, (73), 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) [2021-10-21 19:54:35,106 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2021-10-21 19:54:35,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-10-21 19:54:35,106 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:35,107 INFO L512 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2021-10-21 19:54:35,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:35,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:35,334 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:35,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:35,334 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2021-10-21 19:54:35,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:35,334 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550521543] [2021-10-21 19:54:35,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:35,334 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:35,483 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:35,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:35,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550521543] [2021-10-21 19:54:35,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550521543] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:35,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178682151] [2021-10-21 19:54:35,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:35,484 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:35,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:35,485 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:35,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-10-21 19:54:35,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:35,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:35,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2021-10-21 19:54:35,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:36,277 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:36,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178682151] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:36,277 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:36,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2021-10-21 19:54:36,277 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595386544] [2021-10-21 19:54:36,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 19:54:36,278 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:36,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:54:36,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:54:36,279 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand has 17 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 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) [2021-10-21 19:54:36,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:36,309 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2021-10-21 19:54:36,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-10-21 19:54:36,310 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 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 75 [2021-10-21 19:54:36,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:36,311 INFO L225 Difference]: With dead ends: 84 [2021-10-21 19:54:36,311 INFO L226 Difference]: Without dead ends: 83 [2021-10-21 19:54:36,311 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 209.7ms TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:54:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-10-21 19:54:36,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2021-10-21 19:54:36,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 80 states have (on average 1.025) internal successors, (82), 81 states have internal predecessors, (82), 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) [2021-10-21 19:54:36,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2021-10-21 19:54:36,315 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2021-10-21 19:54:36,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:36,315 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2021-10-21 19:54:36,315 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 4.6875) internal successors, (75), 16 states have internal predecessors, (75), 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) [2021-10-21 19:54:36,315 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2021-10-21 19:54:36,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-10-21 19:54:36,316 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:36,316 INFO L512 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2021-10-21 19:54:36,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2021-10-21 19:54:36,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:36,522 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:36,522 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2021-10-21 19:54:36,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:36,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664046770] [2021-10-21 19:54:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:36,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:36,672 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:36,673 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:36,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664046770] [2021-10-21 19:54:36,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664046770] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:36,673 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694925183] [2021-10-21 19:54:36,673 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:54:36,674 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:36,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:36,675 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:36,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-10-21 19:54:37,167 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-10-21 19:54:37,167 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:37,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:54:37,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:37,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1694925183] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:37,507 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:37,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-10-21 19:54:37,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244250654] [2021-10-21 19:54:37,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 19:54:37,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:37,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:54:37,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:54:37,509 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 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) [2021-10-21 19:54:37,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:37,568 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2021-10-21 19:54:37,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:54:37,568 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 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 78 [2021-10-21 19:54:37,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:37,569 INFO L225 Difference]: With dead ends: 87 [2021-10-21 19:54:37,569 INFO L226 Difference]: Without dead ends: 86 [2021-10-21 19:54:37,571 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 225.0ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:54:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-21 19:54:37,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2021-10-21 19:54:37,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 83 states have (on average 1.0240963855421688) internal successors, (85), 84 states have internal predecessors, (85), 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) [2021-10-21 19:54:37,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2021-10-21 19:54:37,576 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2021-10-21 19:54:37,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:37,576 INFO L470 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2021-10-21 19:54:37,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.588235294117647) internal successors, (78), 17 states have internal predecessors, (78), 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) [2021-10-21 19:54:37,577 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2021-10-21 19:54:37,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-21 19:54:37,577 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:37,577 INFO L512 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2021-10-21 19:54:37,616 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:37,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:37,791 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:37,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:37,792 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2021-10-21 19:54:37,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:37,792 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211716978] [2021-10-21 19:54:37,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:37,792 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:37,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:37,970 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:37,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:37,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211716978] [2021-10-21 19:54:37,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211716978] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:37,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735550588] [2021-10-21 19:54:37,971 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:54:37,971 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:37,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:37,973 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:37,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-10-21 19:54:38,515 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2021-10-21 19:54:38,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:38,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-21 19:54:38,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:38,889 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:38,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735550588] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:38,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:38,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2021-10-21 19:54:38,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561468023] [2021-10-21 19:54:38,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 19:54:38,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:38,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:54:38,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:54:38,891 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 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) [2021-10-21 19:54:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:38,931 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2021-10-21 19:54:38,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:54:38,932 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 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 80 [2021-10-21 19:54:38,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:38,933 INFO L225 Difference]: With dead ends: 89 [2021-10-21 19:54:38,933 INFO L226 Difference]: Without dead ends: 88 [2021-10-21 19:54:38,933 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 259.3ms TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:54:38,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-10-21 19:54:38,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2021-10-21 19:54:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 85 states have (on average 1.0235294117647058) internal successors, (87), 86 states have internal predecessors, (87), 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) [2021-10-21 19:54:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2021-10-21 19:54:38,937 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2021-10-21 19:54:38,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:38,937 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2021-10-21 19:54:38,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.705882352941177) internal successors, (80), 17 states have internal predecessors, (80), 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) [2021-10-21 19:54:38,938 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2021-10-21 19:54:38,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-10-21 19:54:38,938 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:38,938 INFO L512 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2021-10-21 19:54:38,977 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:39,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2021-10-21 19:54:39,154 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:39,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:39,154 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2021-10-21 19:54:39,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:39,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95795662] [2021-10-21 19:54:39,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:39,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:39,349 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:39,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:39,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95795662] [2021-10-21 19:54:39,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95795662] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:39,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198981895] [2021-10-21 19:54:39,350 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:54:39,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:39,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:39,351 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:39,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-10-21 19:54:39,896 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:54:39,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:39,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:54:39,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:40,255 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:40,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198981895] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:40,256 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:40,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-21 19:54:40,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092177121] [2021-10-21 19:54:40,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 19:54:40,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:40,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 19:54:40,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:54:40,257 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 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) [2021-10-21 19:54:40,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:40,323 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2021-10-21 19:54:40,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 19:54:40,323 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 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 83 [2021-10-21 19:54:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:40,324 INFO L225 Difference]: With dead ends: 92 [2021-10-21 19:54:40,324 INFO L226 Difference]: Without dead ends: 91 [2021-10-21 19:54:40,325 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 279.8ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:54:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-10-21 19:54:40,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2021-10-21 19:54:40,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 88 states have (on average 1.0227272727272727) internal successors, (90), 89 states have internal predecessors, (90), 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) [2021-10-21 19:54:40,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2021-10-21 19:54:40,328 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2021-10-21 19:54:40,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:40,329 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2021-10-21 19:54:40,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.611111111111111) internal successors, (83), 18 states have internal predecessors, (83), 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) [2021-10-21 19:54:40,329 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2021-10-21 19:54:40,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-21 19:54:40,330 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:40,330 INFO L512 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2021-10-21 19:54:40,359 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-10-21 19:54:40,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2021-10-21 19:54:40,546 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:40,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:40,546 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2021-10-21 19:54:40,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:40,546 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703964758] [2021-10-21 19:54:40,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:40,546 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:40,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:40,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:40,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703964758] [2021-10-21 19:54:40,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703964758] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:40,721 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1878607175] [2021-10-21 19:54:40,721 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:54:40,721 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:40,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:40,722 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:40,745 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-10-21 19:54:41,194 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:54:41,195 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:41,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-21 19:54:41,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:41,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1878607175] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:41,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:41,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2021-10-21 19:54:41,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702202032] [2021-10-21 19:54:41,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-10-21 19:54:41,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:41,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-10-21 19:54:41,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:54:41,569 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand has 19 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 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) [2021-10-21 19:54:41,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:41,622 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2021-10-21 19:54:41,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-21 19:54:41,623 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 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 85 [2021-10-21 19:54:41,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:41,624 INFO L225 Difference]: With dead ends: 94 [2021-10-21 19:54:41,624 INFO L226 Difference]: Without dead ends: 93 [2021-10-21 19:54:41,624 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 255.6ms TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:54:41,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-10-21 19:54:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2021-10-21 19:54:41,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 90 states have (on average 1.0222222222222221) internal successors, (92), 91 states have internal predecessors, (92), 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) [2021-10-21 19:54:41,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2021-10-21 19:54:41,629 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2021-10-21 19:54:41,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:41,629 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2021-10-21 19:54:41,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 4.722222222222222) internal successors, (85), 18 states have internal predecessors, (85), 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) [2021-10-21 19:54:41,630 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2021-10-21 19:54:41,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-10-21 19:54:41,630 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:41,630 INFO L512 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2021-10-21 19:54:41,661 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:41,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:41,858 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:41,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:41,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2021-10-21 19:54:41,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:41,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295973968] [2021-10-21 19:54:41,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:41,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:41,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:42,051 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:42,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:42,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295973968] [2021-10-21 19:54:42,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295973968] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:42,051 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811531394] [2021-10-21 19:54:42,051 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:54:42,052 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:42,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:42,053 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:42,066 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-10-21 19:54:42,585 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-21 19:54:42,586 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:42,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:54:42,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:43,011 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:43,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811531394] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:43,012 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:43,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-21 19:54:43,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228634751] [2021-10-21 19:54:43,012 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-21 19:54:43,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:43,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-21 19:54:43,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:54:43,013 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 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) [2021-10-21 19:54:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:43,073 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2021-10-21 19:54:43,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 19:54:43,073 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 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 88 [2021-10-21 19:54:43,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:43,074 INFO L225 Difference]: With dead ends: 97 [2021-10-21 19:54:43,074 INFO L226 Difference]: Without dead ends: 96 [2021-10-21 19:54:43,074 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 299.2ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:54:43,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-21 19:54:43,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2021-10-21 19:54:43,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 93 states have (on average 1.021505376344086) internal successors, (95), 94 states have internal predecessors, (95), 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) [2021-10-21 19:54:43,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2021-10-21 19:54:43,078 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2021-10-21 19:54:43,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:43,079 INFO L470 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2021-10-21 19:54:43,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.631578947368421) internal successors, (88), 19 states have internal predecessors, (88), 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) [2021-10-21 19:54:43,079 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2021-10-21 19:54:43,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-10-21 19:54:43,080 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:43,080 INFO L512 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2021-10-21 19:54:43,104 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:43,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36,34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:43,286 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:43,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:43,286 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2021-10-21 19:54:43,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:43,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703587979] [2021-10-21 19:54:43,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:43,286 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:43,493 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:43,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:43,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703587979] [2021-10-21 19:54:43,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703587979] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:43,493 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868968579] [2021-10-21 19:54:43,494 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:54:43,494 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:43,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:43,495 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:43,511 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2021-10-21 19:54:44,078 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2021-10-21 19:54:44,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:44,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2021-10-21 19:54:44,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:44,493 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:44,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868968579] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:44,493 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:44,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2021-10-21 19:54:44,493 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97670682] [2021-10-21 19:54:44,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-21 19:54:44,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:44,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-21 19:54:44,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:54:44,495 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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) [2021-10-21 19:54:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:44,545 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2021-10-21 19:54:44,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-10-21 19:54:44,545 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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 [2021-10-21 19:54:44,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:44,546 INFO L225 Difference]: With dead ends: 99 [2021-10-21 19:54:44,546 INFO L226 Difference]: Without dead ends: 98 [2021-10-21 19:54:44,547 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 304.6ms TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:54:44,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2021-10-21 19:54:44,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2021-10-21 19:54:44,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 95 states have (on average 1.0210526315789474) internal successors, (97), 96 states have internal predecessors, (97), 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) [2021-10-21 19:54:44,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2021-10-21 19:54:44,550 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2021-10-21 19:54:44,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:44,551 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2021-10-21 19:54:44,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 4.7368421052631575) internal successors, (90), 19 states have internal predecessors, (90), 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) [2021-10-21 19:54:44,551 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2021-10-21 19:54:44,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-10-21 19:54:44,552 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:44,552 INFO L512 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2021-10-21 19:54:44,578 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2021-10-21 19:54:44,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-10-21 19:54:44,766 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:44,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:44,766 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2021-10-21 19:54:44,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:44,766 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204980958] [2021-10-21 19:54:44,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:44,767 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:44,968 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:44,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:44,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204980958] [2021-10-21 19:54:44,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204980958] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:44,969 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31310641] [2021-10-21 19:54:44,969 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:54:44,970 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:44,970 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:44,976 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:44,991 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2021-10-21 19:54:45,672 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-21 19:54:45,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:45,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:54:45,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:46,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31310641] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:46,128 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:46,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-21 19:54:46,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957100003] [2021-10-21 19:54:46,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:54:46,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:54:46,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:54:46,130 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand has 21 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 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) [2021-10-21 19:54:46,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:46,206 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2021-10-21 19:54:46,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 19:54:46,206 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 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 93 [2021-10-21 19:54:46,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:46,207 INFO L225 Difference]: With dead ends: 102 [2021-10-21 19:54:46,207 INFO L226 Difference]: Without dead ends: 101 [2021-10-21 19:54:46,208 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 330.4ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:54:46,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2021-10-21 19:54:46,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2021-10-21 19:54:46,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 98 states have (on average 1.0204081632653061) internal successors, (100), 99 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:46,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2021-10-21 19:54:46,212 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2021-10-21 19:54:46,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:46,212 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2021-10-21 19:54:46,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.65) internal successors, (93), 20 states have internal predecessors, (93), 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) [2021-10-21 19:54:46,212 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2021-10-21 19:54:46,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-10-21 19:54:46,213 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:46,213 INFO L512 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2021-10-21 19:54:46,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:46,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-10-21 19:54:46,422 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:46,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:46,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2021-10-21 19:54:46,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:46,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885617013] [2021-10-21 19:54:46,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:46,423 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:46,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:46,646 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:46,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:46,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885617013] [2021-10-21 19:54:46,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885617013] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:46,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673973526] [2021-10-21 19:54:46,647 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:54:46,647 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:46,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:46,648 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:46,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2021-10-21 19:54:47,343 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2021-10-21 19:54:47,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:47,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2021-10-21 19:54:47,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:47,814 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:47,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673973526] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:47,814 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:47,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2021-10-21 19:54:47,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885170374] [2021-10-21 19:54:47,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-10-21 19:54:47,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:47,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-10-21 19:54:47,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:54:47,818 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 21 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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) [2021-10-21 19:54:47,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:47,868 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2021-10-21 19:54:47,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 19:54:47,869 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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 95 [2021-10-21 19:54:47,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:47,870 INFO L225 Difference]: With dead ends: 104 [2021-10-21 19:54:47,870 INFO L226 Difference]: Without dead ends: 103 [2021-10-21 19:54:47,871 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 346.7ms TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2021-10-21 19:54:47,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-21 19:54:47,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2021-10-21 19:54:47,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 100 states have (on average 1.02) internal successors, (102), 101 states have internal predecessors, (102), 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) [2021-10-21 19:54:47,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2021-10-21 19:54:47,875 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2021-10-21 19:54:47,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:47,876 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2021-10-21 19:54:47,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 4.75) internal successors, (95), 20 states have internal predecessors, (95), 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) [2021-10-21 19:54:47,876 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2021-10-21 19:54:47,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-21 19:54:47,877 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:47,877 INFO L512 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2021-10-21 19:54:47,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:48,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2021-10-21 19:54:48,102 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:48,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:48,102 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2021-10-21 19:54:48,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:48,102 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551434036] [2021-10-21 19:54:48,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:48,103 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:48,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:48,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551434036] [2021-10-21 19:54:48,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551434036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:48,350 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720565036] [2021-10-21 19:54:48,350 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2021-10-21 19:54:48,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:48,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:48,351 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:48,365 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2021-10-21 19:54:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:48,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-21 19:54:48,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:49,345 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:49,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720565036] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:49,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-21 19:54:49,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2021-10-21 19:54:49,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254936715] [2021-10-21 19:54:49,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-10-21 19:54:49,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:49,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-10-21 19:54:49,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:54:49,347 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 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) [2021-10-21 19:54:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:49,417 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2021-10-21 19:54:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-21 19:54:49,418 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 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 98 [2021-10-21 19:54:49,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:49,419 INFO L225 Difference]: With dead ends: 107 [2021-10-21 19:54:49,419 INFO L226 Difference]: Without dead ends: 106 [2021-10-21 19:54:49,419 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 360.3ms TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:54:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2021-10-21 19:54:49,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2021-10-21 19:54:49,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 103 states have (on average 1.0194174757281553) internal successors, (105), 104 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:49,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2021-10-21 19:54:49,424 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2021-10-21 19:54:49,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:49,424 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2021-10-21 19:54:49,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 4.666666666666667) internal successors, (98), 21 states have internal predecessors, (98), 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) [2021-10-21 19:54:49,424 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2021-10-21 19:54:49,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-10-21 19:54:49,425 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:49,425 INFO L512 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2021-10-21 19:54:49,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2021-10-21 19:54:49,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:49,638 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2021-10-21 19:54:49,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:49,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2021-10-21 19:54:49,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:49,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255784257] [2021-10-21 19:54:49,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:49,638 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:49,671 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:54:49,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:54:49,720 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:54:49,720 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-21 19:54:49,721 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:54:49,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:54:49,723 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:54:49,724 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW [2021-10-21 19:54:49,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-21 19:54:49,731 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 19:54:49,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 07:54:49 BoogieIcfgContainer [2021-10-21 19:54:49,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 19:54:49,803 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:54:49,804 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:54:49,804 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:54:49,804 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:54:16" (3/4) ... [2021-10-21 19:54:49,806 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-21 19:54:49,871 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:54:49,872 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:54:49,873 INFO L168 Benchmark]: Toolchain (without parser) took 34126.72 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 71.6 MB in the beginning and 87.1 MB in the end (delta: -15.5 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:54:49,873 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory is still 87.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:54:49,874 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.90 ms. Allocated memory is still 109.1 MB. Free memory was 71.4 MB in the beginning and 85.3 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:54:49,874 INFO L168 Benchmark]: Boogie Procedure Inliner took 27.07 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 83.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:54:49,875 INFO L168 Benchmark]: Boogie Preprocessor took 16.08 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 83.4 MB in the end (delta: 490.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:54:49,875 INFO L168 Benchmark]: RCFGBuilder took 258.18 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 75.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:54:49,875 INFO L168 Benchmark]: TraceAbstraction took 33510.36 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 74.9 MB in the beginning and 89.2 MB in the end (delta: -14.4 MB). Peak memory consumption was 83.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:54:49,876 INFO L168 Benchmark]: Witness Printer took 68.29 ms. Allocated memory is still 159.4 MB. Free memory was 89.2 MB in the beginning and 87.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:54:49,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 109.1 MB. Free memory is still 87.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.90 ms. Allocated memory is still 109.1 MB. Free memory was 71.4 MB in the beginning and 85.3 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 27.07 ms. Allocated memory is still 109.1 MB. Free memory was 85.3 MB in the beginning and 83.9 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 16.08 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 83.4 MB in the end (delta: 490.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 258.18 ms. Allocated memory is still 109.1 MB. Free memory was 83.2 MB in the beginning and 75.0 MB in the end (delta: 8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 33510.36 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 74.9 MB in the beginning and 89.2 MB in the end (delta: -14.4 MB). Peak memory consumption was 83.5 MB. Max. memory is 16.1 GB. * Witness Printer took 68.29 ms. Allocated memory is still 159.4 MB. Free memory was 89.2 MB in the beginning and 87.1 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] 3*y - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 19]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 20]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 33375.0ms, OverallIterations: 42, TraceHistogramMax: 20, EmptinessCheckTime: 43.3ms, AutomataDifference: 1799.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.6ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1100 SDs, 0 SdLazy, 1227 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1020.4ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 5315.5ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=41, InterpolantAutomatonStates: 484, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 206.0ms AutomataMinimizationTime, 41 MinimizatonAttempts, 39 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 120.6ms SsaConstructionTime, 826.0ms SatisfiabilityAnalysisTime, 12678.4ms InterpolantComputationTime, 4022 NumberOfCodeBlocks, 4022 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 3844 ConstructedInterpolants, 0 QuantifiedInterpolants, 11532 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3617 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 0/23218 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:54:49,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c90bbda0-ca14-4472-bd39-11bd2839119c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...