./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/pthread/fib_safe-5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread/fib_safe-5.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40fcfd4444bd180f6e5508f0972ed92e70894b01f23e03dc2e761819c6d5a859 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:38:28,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:38:28,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:38:28,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:38:28,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:38:28,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:38:28,260 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:38:28,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:38:28,267 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:38:28,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:38:28,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:38:28,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:38:28,276 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:38:28,278 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:38:28,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:38:28,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:38:28,284 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:38:28,285 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:38:28,287 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:38:28,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:38:28,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:38:28,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:38:28,300 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:38:28,301 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:38:28,304 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:38:28,304 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:38:28,304 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:38:28,305 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:38:28,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:38:28,307 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:38:28,307 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:38:28,308 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:38:28,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:38:28,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:38:28,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:38:28,318 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:38:28,319 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:38:28,319 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:38:28,319 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:38:28,320 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:38:28,321 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:38:28,321 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/config/svcomp-Overflow-32bit-Automizer_Default.epf [2022-11-02 20:38:28,364 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:38:28,364 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:38:28,365 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:38:28,365 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:38:28,365 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:38:28,366 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:38:28,366 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:38:28,366 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:38:28,367 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:38:28,367 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:38:28,367 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:38:28,367 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-02 20:38:28,367 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:38:28,368 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:38:28,368 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:38:28,368 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:38:28,368 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:38:28,368 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:38:28,368 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-11-02 20:38:28,369 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:38:28,369 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:38:28,369 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:38:28,369 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:38:28,369 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:38:28,369 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:38:28,370 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:38:28,370 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:28,370 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:38:28,370 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:38:28,370 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:38:28,371 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:38:28,371 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:38:28,371 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:38:28,371 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_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40fcfd4444bd180f6e5508f0972ed92e70894b01f23e03dc2e761819c6d5a859 [2022-11-02 20:38:28,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:38:28,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:38:28,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:38:28,720 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:38:28,721 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:38:28,723 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/pthread/fib_safe-5.i [2022-11-02 20:38:28,801 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/data/7c5fb950c/8bb3d67dd197471e9c5578e5f31775f5/FLAGcbca2e3ac [2022-11-02 20:38:29,488 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:38:29,489 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/sv-benchmarks/c/pthread/fib_safe-5.i [2022-11-02 20:38:29,501 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/data/7c5fb950c/8bb3d67dd197471e9c5578e5f31775f5/FLAGcbca2e3ac [2022-11-02 20:38:29,740 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/data/7c5fb950c/8bb3d67dd197471e9c5578e5f31775f5 [2022-11-02 20:38:29,743 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:38:29,745 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:38:29,746 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:29,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:38:29,751 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:38:29,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:29" (1/1) ... [2022-11-02 20:38:29,754 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d5165d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:29, skipping insertion in model container [2022-11-02 20:38:29,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:38:29" (1/1) ... [2022-11-02 20:38:29,763 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:38:29,808 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:38:30,256 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/sv-benchmarks/c/pthread/fib_safe-5.i[30813,30826] [2022-11-02 20:38:30,258 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:30,268 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:38:30,331 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/sv-benchmarks/c/pthread/fib_safe-5.i[30813,30826] [2022-11-02 20:38:30,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:38:30,378 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:38:30,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30 WrapperNode [2022-11-02 20:38:30,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:38:30,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:30,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:38:30,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:38:30,389 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,462 INFO L138 Inliner]: procedures = 164, calls = 26, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2022-11-02 20:38:30,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:38:30,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:38:30,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:38:30,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:38:30,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,485 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,496 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,509 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,522 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:38:30,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:38:30,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:38:30,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:38:30,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (1/1) ... [2022-11-02 20:38:30,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:38:30,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:30,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:38:30,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:38:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2022-11-02 20:38:30,629 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2022-11-02 20:38:30,629 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2022-11-02 20:38:30,630 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2022-11-02 20:38:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:38:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:38:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:38:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:38:30,630 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:38:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:38:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:38:30,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:38:30,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:38:30,633 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:38:30,803 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:38:30,805 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:38:31,064 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:38:31,111 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:38:31,112 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:38:31,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:31 BoogieIcfgContainer [2022-11-02 20:38:31,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:38:31,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:38:31,118 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:38:31,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:38:31,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:38:29" (1/3) ... [2022-11-02 20:38:31,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e3b23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:31, skipping insertion in model container [2022-11-02 20:38:31,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:38:30" (2/3) ... [2022-11-02 20:38:31,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@62e3b23d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:38:31, skipping insertion in model container [2022-11-02 20:38:31,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:31" (3/3) ... [2022-11-02 20:38:31,128 INFO L112 eAbstractionObserver]: Analyzing ICFG fib_safe-5.i [2022-11-02 20:38:31,138 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:38:31,149 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:38:31,150 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-11-02 20:38:31,150 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:38:31,235 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-11-02 20:38:31,277 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-02 20:38:31,293 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 115 transitions, 240 flow [2022-11-02 20:38:31,296 INFO L112 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 115 transitions, 240 flow [2022-11-02 20:38:31,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 115 transitions, 240 flow [2022-11-02 20:38:31,409 INFO L130 PetriNetUnfolder]: 7/113 cut-off events. [2022-11-02 20:38:31,409 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-11-02 20:38:31,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 120 conditions, 113 events. 7/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 151 event pairs, 0 based on Foata normal form. 0/94 useless extension candidates. Maximal degree in co-relation 83. Up to 2 conditions per place. [2022-11-02 20:38:31,419 INFO L118 LiptonReduction]: Number of co-enabled transitions 3570 [2022-11-02 20:38:36,354 INFO L133 LiptonReduction]: Checked pairs total: 3490 [2022-11-02 20:38:36,354 INFO L135 LiptonReduction]: Total number of compositions: 121 [2022-11-02 20:38:36,363 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 31 places, 27 transitions, 64 flow [2022-11-02 20:38:36,409 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 358 states, 234 states have (on average 4.512820512820513) internal successors, (1056), 357 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:36,429 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:38:36,436 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@50071cdf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:38:36,437 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2022-11-02 20:38:36,440 INFO L276 IsEmpty]: Start isEmpty. Operand has 358 states, 234 states have (on average 4.512820512820513) internal successors, (1056), 357 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:36,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:38:36,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:36,447 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:38:36,447 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:36,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:36,453 INFO L85 PathProgramCache]: Analyzing trace with hash 13979310, now seen corresponding path program 1 times [2022-11-02 20:38:36,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:36,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142631031] [2022-11-02 20:38:36,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:36,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:36,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:36,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:36,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:36,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142631031] [2022-11-02 20:38:36,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142631031] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:36,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:36,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:38:36,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731962461] [2022-11-02 20:38:36,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:36,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:38:36,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:36,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:38:36,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:38:36,700 INFO L87 Difference]: Start difference. First operand has 358 states, 234 states have (on average 4.512820512820513) internal successors, (1056), 357 states have internal predecessors, (1056), 0 states have call successors, (0), 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 2 states, 1 states have (on average 4.0) 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) [2022-11-02 20:38:36,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:36,792 INFO L93 Difference]: Finished difference Result 229 states and 671 transitions. [2022-11-02 20:38:36,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:38:36,796 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) 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 [2022-11-02 20:38:36,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:36,815 INFO L225 Difference]: With dead ends: 229 [2022-11-02 20:38:36,815 INFO L226 Difference]: Without dead ends: 229 [2022-11-02 20:38:36,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:38:36,822 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:36,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:38:36,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-11-02 20:38:36,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-11-02 20:38:36,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 166 states have (on average 4.042168674698795) internal successors, (671), 228 states have internal predecessors, (671), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:36,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 671 transitions. [2022-11-02 20:38:36,911 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 671 transitions. Word has length 4 [2022-11-02 20:38:36,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:36,912 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 671 transitions. [2022-11-02 20:38:36,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) 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) [2022-11-02 20:38:36,912 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 671 transitions. [2022-11-02 20:38:36,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:38:36,913 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:36,913 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:38:36,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:38:36,914 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:36,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:36,914 INFO L85 PathProgramCache]: Analyzing trace with hash 13979319, now seen corresponding path program 1 times [2022-11-02 20:38:36,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:36,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161332209] [2022-11-02 20:38:36,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:36,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:37,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:37,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:37,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161332209] [2022-11-02 20:38:37,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161332209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:37,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:37,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:38:37,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593705986] [2022-11-02 20:38:37,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:37,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:38:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:38:37,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:37,052 INFO L87 Difference]: Start difference. First operand 229 states and 671 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:37,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:37,127 INFO L93 Difference]: Finished difference Result 343 states and 1007 transitions. [2022-11-02 20:38:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:38:37,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-02 20:38:37,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:37,131 INFO L225 Difference]: With dead ends: 343 [2022-11-02 20:38:37,131 INFO L226 Difference]: Without dead ends: 343 [2022-11-02 20:38:37,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:37,133 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 17 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:37,134 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 0 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:38:37,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-11-02 20:38:37,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 267. [2022-11-02 20:38:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 204 states have (on average 4.21078431372549) internal successors, (859), 266 states have internal predecessors, (859), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:37,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 859 transitions. [2022-11-02 20:38:37,169 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 859 transitions. Word has length 4 [2022-11-02 20:38:37,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:37,169 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 859 transitions. [2022-11-02 20:38:37,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:37,170 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 859 transitions. [2022-11-02 20:38:37,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-02 20:38:37,170 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:37,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-02 20:38:37,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:38:37,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:37,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:37,176 INFO L85 PathProgramCache]: Analyzing trace with hash 13979257, now seen corresponding path program 1 times [2022-11-02 20:38:37,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:37,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272308505] [2022-11-02 20:38:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:37,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:37,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:37,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:37,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272308505] [2022-11-02 20:38:37,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272308505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:37,324 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:37,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:38:37,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859870802] [2022-11-02 20:38:37,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:37,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:38:37,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:37,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:38:37,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:37,326 INFO L87 Difference]: Start difference. First operand 267 states and 859 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) [2022-11-02 20:38:37,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:37,424 INFO L93 Difference]: Finished difference Result 291 states and 927 transitions. [2022-11-02 20:38:37,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:38:37,425 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 [2022-11-02 20:38:37,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:37,431 INFO L225 Difference]: With dead ends: 291 [2022-11-02 20:38:37,431 INFO L226 Difference]: Without dead ends: 291 [2022-11-02 20:38:37,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:37,433 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:37,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:38:37,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2022-11-02 20:38:37,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 291. [2022-11-02 20:38:37,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 228 states have (on average 4.065789473684211) internal successors, (927), 290 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:37,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 927 transitions. [2022-11-02 20:38:37,457 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 927 transitions. Word has length 4 [2022-11-02 20:38:37,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:37,457 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 927 transitions. [2022-11-02 20:38:37,458 INFO L496 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) [2022-11-02 20:38:37,458 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 927 transitions. [2022-11-02 20:38:37,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:38:37,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:37,463 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:38:37,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:38:37,463 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:37,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:37,464 INFO L85 PathProgramCache]: Analyzing trace with hash 433360029, now seen corresponding path program 1 times [2022-11-02 20:38:37,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:37,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748629867] [2022-11-02 20:38:37,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:37,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:37,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:37,597 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:37,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:37,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748629867] [2022-11-02 20:38:37,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748629867] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:37,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678170866] [2022-11-02 20:38:37,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:37,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:37,604 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:37,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:37,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:38:37,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:37,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:38:37,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:37,790 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:37,790 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:37,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [678170866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:37,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:37,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:38:37,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212114293] [2022-11-02 20:38:37,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:37,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:37,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:37,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:37,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:37,793 INFO L87 Difference]: Start difference. First operand 291 states and 927 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:37,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:37,905 INFO L93 Difference]: Finished difference Result 313 states and 935 transitions. [2022-11-02 20:38:37,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:38:37,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-11-02 20:38:37,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:37,908 INFO L225 Difference]: With dead ends: 313 [2022-11-02 20:38:37,909 INFO L226 Difference]: Without dead ends: 313 [2022-11-02 20:38:37,909 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:37,910 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:37,910 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:38:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-02 20:38:37,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 252. [2022-11-02 20:38:37,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 205 states have (on average 3.9609756097560975) internal successors, (812), 251 states have internal predecessors, (812), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:37,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 812 transitions. [2022-11-02 20:38:37,926 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 812 transitions. Word has length 5 [2022-11-02 20:38:37,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:37,927 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 812 transitions. [2022-11-02 20:38:37,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 812 transitions. [2022-11-02 20:38:37,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:38:37,928 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:37,928 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:38:37,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:38,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:38,151 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:38,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:38,152 INFO L85 PathProgramCache]: Analyzing trace with hash 433359967, now seen corresponding path program 1 times [2022-11-02 20:38:38,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:38,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708312723] [2022-11-02 20:38:38,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:38,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:38,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:38,254 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:38,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:38,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708312723] [2022-11-02 20:38:38,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708312723] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:38,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587717823] [2022-11-02 20:38:38,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:38,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:38,255 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:38,257 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:38,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:38:38,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:38,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:38:38,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:38,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:38,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:38,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:38,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587717823] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:38,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:38,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-02 20:38:38,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801201177] [2022-11-02 20:38:38,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:38,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:38:38,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:38:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:38:38,450 INFO L87 Difference]: Start difference. First operand 252 states and 812 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2022-11-02 20:38:38,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:38,701 INFO L93 Difference]: Finished difference Result 576 states and 1795 transitions. [2022-11-02 20:38:38,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:38:38,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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 5 [2022-11-02 20:38:38,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:38,706 INFO L225 Difference]: With dead ends: 576 [2022-11-02 20:38:38,706 INFO L226 Difference]: Without dead ends: 576 [2022-11-02 20:38:38,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=48, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:38:38,712 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 145 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:38,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 0 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:38:38,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-11-02 20:38:38,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 443. [2022-11-02 20:38:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 396 states have (on average 4.047979797979798) internal successors, (1603), 442 states have internal predecessors, (1603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:38,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1603 transitions. [2022-11-02 20:38:38,758 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1603 transitions. Word has length 5 [2022-11-02 20:38:38,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:38,759 INFO L495 AbstractCegarLoop]: Abstraction has 443 states and 1603 transitions. [2022-11-02 20:38:38,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 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) [2022-11-02 20:38:38,759 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1603 transitions. [2022-11-02 20:38:38,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-11-02 20:38:38,760 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:38,761 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-11-02 20:38:38,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:38,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:38,975 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:38,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:38,975 INFO L85 PathProgramCache]: Analyzing trace with hash 433359968, now seen corresponding path program 1 times [2022-11-02 20:38:38,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:38,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175461952] [2022-11-02 20:38:38,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:38,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:39,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:39,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175461952] [2022-11-02 20:38:39,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175461952] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:39,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [136005269] [2022-11-02 20:38:39,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:39,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:39,049 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:39,050 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:39,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:38:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:38:39,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:39,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:39,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:39,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [136005269] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:39,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:39,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-02 20:38:39,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161009544] [2022-11-02 20:38:39,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:39,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:39,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:39,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:39,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:39,184 INFO L87 Difference]: Start difference. First operand 443 states and 1603 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-11-02 20:38:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:39,272 INFO L93 Difference]: Finished difference Result 408 states and 1330 transitions. [2022-11-02 20:38:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:38:39,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2022-11-02 20:38:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:39,277 INFO L225 Difference]: With dead ends: 408 [2022-11-02 20:38:39,277 INFO L226 Difference]: Without dead ends: 408 [2022-11-02 20:38:39,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:39,279 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 28 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:39,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 0 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:38:39,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-11-02 20:38:39,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 319. [2022-11-02 20:38:39,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 296 states have (on average 3.516891891891892) internal successors, (1041), 318 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:39,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 1041 transitions. [2022-11-02 20:38:39,296 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 1041 transitions. Word has length 5 [2022-11-02 20:38:39,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:39,296 INFO L495 AbstractCegarLoop]: Abstraction has 319 states and 1041 transitions. [2022-11-02 20:38:39,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-11-02 20:38:39,297 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 1041 transitions. [2022-11-02 20:38:39,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:38:39,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:39,298 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:38:39,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:39,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:39,519 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:39,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:39,520 INFO L85 PathProgramCache]: Analyzing trace with hash 550639540, now seen corresponding path program 1 times [2022-11-02 20:38:39,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:39,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979686383] [2022-11-02 20:38:39,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:39,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:39,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:39,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979686383] [2022-11-02 20:38:39,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979686383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:39,576 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:39,576 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:38:39,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243035666] [2022-11-02 20:38:39,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:39,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:38:39,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:39,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:38:39,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:39,580 INFO L87 Difference]: Start difference. First operand 319 states and 1041 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:39,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:39,634 INFO L93 Difference]: Finished difference Result 331 states and 1061 transitions. [2022-11-02 20:38:39,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:38:39,638 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 20:38:39,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:39,641 INFO L225 Difference]: With dead ends: 331 [2022-11-02 20:38:39,641 INFO L226 Difference]: Without dead ends: 331 [2022-11-02 20:38:39,641 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:39,642 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:39,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:38:39,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-11-02 20:38:39,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 313. [2022-11-02 20:38:39,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 290 states have (on average 3.5344827586206895) internal successors, (1025), 312 states have internal predecessors, (1025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:39,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 1025 transitions. [2022-11-02 20:38:39,656 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 1025 transitions. Word has length 6 [2022-11-02 20:38:39,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:39,656 INFO L495 AbstractCegarLoop]: Abstraction has 313 states and 1025 transitions. [2022-11-02 20:38:39,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 1025 transitions. [2022-11-02 20:38:39,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:38:39,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:39,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:38:39,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 20:38:39,658 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:39,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:39,659 INFO L85 PathProgramCache]: Analyzing trace with hash 550641687, now seen corresponding path program 1 times [2022-11-02 20:38:39,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:39,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463771591] [2022-11-02 20:38:39,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:39,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:39,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:39,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463771591] [2022-11-02 20:38:39,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463771591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:39,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:39,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:38:39,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166732710] [2022-11-02 20:38:39,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:39,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:38:39,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:39,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:38:39,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:39,728 INFO L87 Difference]: Start difference. First operand 313 states and 1025 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:39,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:39,782 INFO L93 Difference]: Finished difference Result 460 states and 1520 transitions. [2022-11-02 20:38:39,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:38:39,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-02 20:38:39,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:39,786 INFO L225 Difference]: With dead ends: 460 [2022-11-02 20:38:39,786 INFO L226 Difference]: Without dead ends: 460 [2022-11-02 20:38:39,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:39,787 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:39,788 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:38:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-11-02 20:38:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 362. [2022-11-02 20:38:39,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 339 states have (on average 3.799410029498525) internal successors, (1288), 361 states have internal predecessors, (1288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1288 transitions. [2022-11-02 20:38:39,805 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1288 transitions. Word has length 6 [2022-11-02 20:38:39,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:39,805 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 1288 transitions. [2022-11-02 20:38:39,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1288 transitions. [2022-11-02 20:38:39,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-02 20:38:39,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:39,806 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-02 20:38:39,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:38:39,807 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:39,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:39,808 INFO L85 PathProgramCache]: Analyzing trace with hash 550641629, now seen corresponding path program 1 times [2022-11-02 20:38:39,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:39,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695104416] [2022-11-02 20:38:39,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:39,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:39,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:39,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695104416] [2022-11-02 20:38:39,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695104416] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:39,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:39,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-11-02 20:38:39,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607335186] [2022-11-02 20:38:39,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:39,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:38:39,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:39,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:38:39,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:39,855 INFO L87 Difference]: Start difference. First operand 362 states and 1288 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) [2022-11-02 20:38:39,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:39,908 INFO L93 Difference]: Finished difference Result 362 states and 1190 transitions. [2022-11-02 20:38:39,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:38:39,909 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 [2022-11-02 20:38:39,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:39,912 INFO L225 Difference]: With dead ends: 362 [2022-11-02 20:38:39,912 INFO L226 Difference]: Without dead ends: 362 [2022-11-02 20:38:39,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:39,913 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 9 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:39,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 0 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:38:39,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-11-02 20:38:39,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 362. [2022-11-02 20:38:39,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 362 states, 339 states have (on average 3.510324483775811) internal successors, (1190), 361 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:39,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 362 states to 362 states and 1190 transitions. [2022-11-02 20:38:39,930 INFO L78 Accepts]: Start accepts. Automaton has 362 states and 1190 transitions. Word has length 6 [2022-11-02 20:38:39,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:39,930 INFO L495 AbstractCegarLoop]: Abstraction has 362 states and 1190 transitions. [2022-11-02 20:38:39,931 INFO L496 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) [2022-11-02 20:38:39,931 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states and 1190 transitions. [2022-11-02 20:38:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:38:39,932 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:39,932 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:39,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:38:39,932 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:39,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:39,933 INFO L85 PathProgramCache]: Analyzing trace with hash -110042911, now seen corresponding path program 1 times [2022-11-02 20:38:39,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:39,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221628829] [2022-11-02 20:38:39,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:39,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:39,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:39,972 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:39,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:39,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221628829] [2022-11-02 20:38:39,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221628829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:39,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:38:39,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:38:39,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859433596] [2022-11-02 20:38:39,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:39,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-02 20:38:39,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:39,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-02 20:38:39,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:39,975 INFO L87 Difference]: Start difference. First operand 362 states and 1190 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:40,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:40,004 INFO L93 Difference]: Finished difference Result 327 states and 1043 transitions. [2022-11-02 20:38:40,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-02 20:38:40,005 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:38:40,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:40,008 INFO L225 Difference]: With dead ends: 327 [2022-11-02 20:38:40,008 INFO L226 Difference]: Without dead ends: 327 [2022-11-02 20:38:40,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-02 20:38:40,009 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:40,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:38:40,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-11-02 20:38:40,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 325. [2022-11-02 20:38:40,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 310 states have (on average 3.3548387096774195) internal successors, (1040), 324 states have internal predecessors, (1040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 1040 transitions. [2022-11-02 20:38:40,023 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 1040 transitions. Word has length 7 [2022-11-02 20:38:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:40,023 INFO L495 AbstractCegarLoop]: Abstraction has 325 states and 1040 transitions. [2022-11-02 20:38:40,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 1040 transitions. [2022-11-02 20:38:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:38:40,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:40,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:40,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:38:40,025 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:40,026 INFO L85 PathProgramCache]: Analyzing trace with hash -109976408, now seen corresponding path program 1 times [2022-11-02 20:38:40,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:40,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349102360] [2022-11-02 20:38:40,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:40,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:40,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:40,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:40,085 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:40,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349102360] [2022-11-02 20:38:40,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349102360] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:40,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610468854] [2022-11-02 20:38:40,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:40,086 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:40,086 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:40,087 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:40,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:38:40,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:40,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-02 20:38:40,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:40,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:40,200 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:40,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610468854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:40,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:40,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-11-02 20:38:40,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021170974] [2022-11-02 20:38:40,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:40,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:40,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:40,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:40,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:40,202 INFO L87 Difference]: Start difference. First operand 325 states and 1040 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:40,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:40,255 INFO L93 Difference]: Finished difference Result 281 states and 896 transitions. [2022-11-02 20:38:40,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:38:40,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:38:40,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:40,258 INFO L225 Difference]: With dead ends: 281 [2022-11-02 20:38:40,258 INFO L226 Difference]: Without dead ends: 281 [2022-11-02 20:38:40,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:38:40,259 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:40,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:38:40,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-11-02 20:38:40,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 281. [2022-11-02 20:38:40,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 270 states have (on average 3.3185185185185184) internal successors, (896), 280 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:40,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 896 transitions. [2022-11-02 20:38:40,272 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 896 transitions. Word has length 7 [2022-11-02 20:38:40,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:40,272 INFO L495 AbstractCegarLoop]: Abstraction has 281 states and 896 transitions. [2022-11-02 20:38:40,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:40,273 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 896 transitions. [2022-11-02 20:38:40,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:38:40,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:40,274 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:40,315 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:40,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:40,487 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:40,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:40,487 INFO L85 PathProgramCache]: Analyzing trace with hash -109976466, now seen corresponding path program 1 times [2022-11-02 20:38:40,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:40,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241350736] [2022-11-02 20:38:40,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:40,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:40,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:40,569 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:40,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:40,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241350736] [2022-11-02 20:38:40,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241350736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:40,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128473010] [2022-11-02 20:38:40,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:40,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:40,570 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:40,571 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:40,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:38:40,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:40,677 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:38:40,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:40,737 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:40,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128473010] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:40,781 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:40,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2022-11-02 20:38:40,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669005948] [2022-11-02 20:38:40,782 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:40,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:38:40,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:40,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:38:40,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:38:40,783 INFO L87 Difference]: Start difference. First operand 281 states and 896 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:40,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:40,902 INFO L93 Difference]: Finished difference Result 618 states and 2056 transitions. [2022-11-02 20:38:40,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:38:40,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:38:40,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:40,908 INFO L225 Difference]: With dead ends: 618 [2022-11-02 20:38:40,908 INFO L226 Difference]: Without dead ends: 618 [2022-11-02 20:38:40,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2022-11-02 20:38:40,909 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 78 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:40,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 0 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:38:40,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-11-02 20:38:40,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 413. [2022-11-02 20:38:40,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 402 states have (on average 3.9527363184079602) internal successors, (1589), 412 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:40,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1589 transitions. [2022-11-02 20:38:40,930 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1589 transitions. Word has length 7 [2022-11-02 20:38:40,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:40,930 INFO L495 AbstractCegarLoop]: Abstraction has 413 states and 1589 transitions. [2022-11-02 20:38:40,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:40,930 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1589 transitions. [2022-11-02 20:38:40,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-11-02 20:38:40,931 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:40,931 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:40,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:41,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-02 20:38:41,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:41,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:41,147 INFO L85 PathProgramCache]: Analyzing trace with hash -109976434, now seen corresponding path program 1 times [2022-11-02 20:38:41,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:41,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368048464] [2022-11-02 20:38:41,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:41,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:41,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,236 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:41,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:41,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368048464] [2022-11-02 20:38:41,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368048464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:41,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45163711] [2022-11-02 20:38:41,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:41,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:41,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:41,238 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:41,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:38:41,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:38:41,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:41,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:41,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:41,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [45163711] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:41,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:41,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2022-11-02 20:38:41,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415705861] [2022-11-02 20:38:41,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:41,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:38:41,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:41,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:38:41,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:41,395 INFO L87 Difference]: Start difference. First operand 413 states and 1589 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:41,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:41,445 INFO L93 Difference]: Finished difference Result 369 states and 1313 transitions. [2022-11-02 20:38:41,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-02 20:38:41,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-11-02 20:38:41,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:41,448 INFO L225 Difference]: With dead ends: 369 [2022-11-02 20:38:41,448 INFO L226 Difference]: Without dead ends: 369 [2022-11-02 20:38:41,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-11-02 20:38:41,449 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:41,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-02 20:38:41,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-11-02 20:38:41,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 369. [2022-11-02 20:38:41,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 369 states, 362 states have (on average 3.6270718232044197) internal successors, (1313), 368 states have internal predecessors, (1313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:41,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 369 states to 369 states and 1313 transitions. [2022-11-02 20:38:41,464 INFO L78 Accepts]: Start accepts. Automaton has 369 states and 1313 transitions. Word has length 7 [2022-11-02 20:38:41,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:41,464 INFO L495 AbstractCegarLoop]: Abstraction has 369 states and 1313 transitions. [2022-11-02 20:38:41,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:41,464 INFO L276 IsEmpty]: Start isEmpty. Operand 369 states and 1313 transitions. [2022-11-02 20:38:41,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:38:41,465 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:41,465 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2022-11-02 20:38:41,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:41,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 20:38:41,691 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:41,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:41,691 INFO L85 PathProgramCache]: Analyzing trace with hash -441935879, now seen corresponding path program 2 times [2022-11-02 20:38:41,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:41,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000491120] [2022-11-02 20:38:41,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:41,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:41,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:41,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:41,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:41,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000491120] [2022-11-02 20:38:41,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000491120] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:41,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546665795] [2022-11-02 20:38:41,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:38:41,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:41,853 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:41,855 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:41,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:38:41,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:38:41,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:41,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:38:41,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:42,062 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:42,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1546665795] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:42,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:42,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-02 20:38:42,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416868184] [2022-11-02 20:38:42,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:42,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:38:42,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:42,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:38:42,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:38:42,192 INFO L87 Difference]: Start difference. First operand 369 states and 1313 transitions. Second operand has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:42,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:42,617 INFO L93 Difference]: Finished difference Result 762 states and 2581 transitions. [2022-11-02 20:38:42,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:38:42,618 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:38:42,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:42,624 INFO L225 Difference]: With dead ends: 762 [2022-11-02 20:38:42,624 INFO L226 Difference]: Without dead ends: 762 [2022-11-02 20:38:42,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=174, Invalid=246, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:38:42,625 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 261 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:42,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 0 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:38:42,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 762 states. [2022-11-02 20:38:42,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 762 to 525. [2022-11-02 20:38:42,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 518 states have (on average 3.8146718146718146) internal successors, (1976), 524 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:42,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 1976 transitions. [2022-11-02 20:38:42,652 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 1976 transitions. Word has length 8 [2022-11-02 20:38:42,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:42,653 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 1976 transitions. [2022-11-02 20:38:42,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.5) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:42,653 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 1976 transitions. [2022-11-02 20:38:42,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-02 20:38:42,654 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:42,654 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:42,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-11-02 20:38:42,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:38:42,867 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:42,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:42,867 INFO L85 PathProgramCache]: Analyzing trace with hash 883637540, now seen corresponding path program 1 times [2022-11-02 20:38:42,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:42,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280351392] [2022-11-02 20:38:42,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:42,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:42,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:42,966 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:42,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:42,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280351392] [2022-11-02 20:38:42,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280351392] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:42,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101152584] [2022-11-02 20:38:42,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:42,968 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:42,968 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:42,969 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:42,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:38:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:38:43,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:43,119 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:43,120 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:43,178 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:43,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101152584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:43,179 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:43,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2022-11-02 20:38:43,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020258003] [2022-11-02 20:38:43,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:43,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:38:43,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:43,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:38:43,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=64, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:38:43,181 INFO L87 Difference]: Start difference. First operand 525 states and 1976 transitions. Second operand has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:43,383 INFO L93 Difference]: Finished difference Result 810 states and 2942 transitions. [2022-11-02 20:38:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:38:43,384 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-02 20:38:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:43,390 INFO L225 Difference]: With dead ends: 810 [2022-11-02 20:38:43,391 INFO L226 Difference]: Without dead ends: 810 [2022-11-02 20:38:43,391 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2022-11-02 20:38:43,392 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 117 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:43,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 0 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:38:43,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2022-11-02 20:38:43,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 683. [2022-11-02 20:38:43,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 676 states have (on average 3.834319526627219) internal successors, (2592), 682 states have internal predecessors, (2592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:43,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 2592 transitions. [2022-11-02 20:38:43,423 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 2592 transitions. Word has length 8 [2022-11-02 20:38:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:43,424 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 2592 transitions. [2022-11-02 20:38:43,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.4) internal successors, (24), 10 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 2592 transitions. [2022-11-02 20:38:43,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-02 20:38:43,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:43,426 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:43,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:43,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:43,651 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:43,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:43,652 INFO L85 PathProgramCache]: Analyzing trace with hash 753351709, now seen corresponding path program 2 times [2022-11-02 20:38:43,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:43,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415411089] [2022-11-02 20:38:43,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:43,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:43,839 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:43,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:43,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415411089] [2022-11-02 20:38:43,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415411089] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:43,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985721182] [2022-11-02 20:38:43,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:38:43,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:43,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:43,842 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:43,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:38:43,945 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:38:43,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:43,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-02 20:38:43,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:44,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:44,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:44,145 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:44,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985721182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:44,146 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:44,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-02 20:38:44,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434393334] [2022-11-02 20:38:44,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:44,146 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:38:44,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:44,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:38:44,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:38:44,147 INFO L87 Difference]: Start difference. First operand 683 states and 2592 transitions. Second operand has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 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) [2022-11-02 20:38:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:44,526 INFO L93 Difference]: Finished difference Result 1832 states and 6450 transitions. [2022-11-02 20:38:44,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:38:44,527 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 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 10 [2022-11-02 20:38:44,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:44,539 INFO L225 Difference]: With dead ends: 1832 [2022-11-02 20:38:44,540 INFO L226 Difference]: Without dead ends: 1832 [2022-11-02 20:38:44,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=258, Unknown=0, NotChecked=0, Total=420 [2022-11-02 20:38:44,541 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 248 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 248 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:44,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [248 Valid, 0 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-02 20:38:44,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1832 states. [2022-11-02 20:38:44,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1832 to 1175. [2022-11-02 20:38:44,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1175 states, 1168 states have (on average 4.10445205479452) internal successors, (4794), 1174 states have internal predecessors, (4794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:44,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1175 states to 1175 states and 4794 transitions. [2022-11-02 20:38:44,597 INFO L78 Accepts]: Start accepts. Automaton has 1175 states and 4794 transitions. Word has length 10 [2022-11-02 20:38:44,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:44,597 INFO L495 AbstractCegarLoop]: Abstraction has 1175 states and 4794 transitions. [2022-11-02 20:38:44,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.875) internal successors, (30), 16 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) [2022-11-02 20:38:44,598 INFO L276 IsEmpty]: Start isEmpty. Operand 1175 states and 4794 transitions. [2022-11-02 20:38:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:38:44,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:44,599 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:44,643 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:44,826 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:38:44,827 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:44,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:44,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1925211794, now seen corresponding path program 1 times [2022-11-02 20:38:44,827 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:44,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674674106] [2022-11-02 20:38:44,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:44,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:44,955 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:44,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:44,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674674106] [2022-11-02 20:38:44,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1674674106] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:44,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318311523] [2022-11-02 20:38:44,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:44,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:44,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:44,958 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:44,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:38:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:45,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:38:45,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:45,154 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:45,154 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:45,245 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:45,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318311523] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:45,246 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:45,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-02 20:38:45,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120237813] [2022-11-02 20:38:45,246 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:45,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:38:45,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:45,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:38:45,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:38:45,248 INFO L87 Difference]: Start difference. First operand 1175 states and 4794 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 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) [2022-11-02 20:38:45,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:45,811 INFO L93 Difference]: Finished difference Result 2225 states and 8490 transitions. [2022-11-02 20:38:45,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:38:45,812 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 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 11 [2022-11-02 20:38:45,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:45,829 INFO L225 Difference]: With dead ends: 2225 [2022-11-02 20:38:45,829 INFO L226 Difference]: Without dead ends: 2225 [2022-11-02 20:38:45,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=391, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:38:45,830 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 271 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:45,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [271 Valid, 0 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:38:45,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2225 states. [2022-11-02 20:38:45,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2225 to 1462. [2022-11-02 20:38:45,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1462 states, 1455 states have (on average 4.210309278350516) internal successors, (6126), 1461 states have internal predecessors, (6126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:45,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1462 states to 1462 states and 6126 transitions. [2022-11-02 20:38:45,908 INFO L78 Accepts]: Start accepts. Automaton has 1462 states and 6126 transitions. Word has length 11 [2022-11-02 20:38:45,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:45,909 INFO L495 AbstractCegarLoop]: Abstraction has 1462 states and 6126 transitions. [2022-11-02 20:38:45,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 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) [2022-11-02 20:38:45,909 INFO L276 IsEmpty]: Start isEmpty. Operand 1462 states and 6126 transitions. [2022-11-02 20:38:45,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-02 20:38:45,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:45,910 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:45,952 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:46,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-02 20:38:46,137 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:46,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:46,138 INFO L85 PathProgramCache]: Analyzing trace with hash 3589348, now seen corresponding path program 2 times [2022-11-02 20:38:46,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:46,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155773849] [2022-11-02 20:38:46,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:46,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:46,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:46,310 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:46,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:46,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155773849] [2022-11-02 20:38:46,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155773849] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:46,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631464459] [2022-11-02 20:38:46,311 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:38:46,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:46,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:46,312 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:46,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:38:46,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:38:46,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:46,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:38:46,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:46,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:46,518 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:46,608 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:46,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631464459] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:46,608 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:46,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 15 [2022-11-02 20:38:46,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848311225] [2022-11-02 20:38:46,609 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:46,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-02 20:38:46,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:46,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-02 20:38:46,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2022-11-02 20:38:46,611 INFO L87 Difference]: Start difference. First operand 1462 states and 6126 transitions. Second operand has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 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) [2022-11-02 20:38:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:47,223 INFO L93 Difference]: Finished difference Result 2991 states and 11878 transitions. [2022-11-02 20:38:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-02 20:38:47,224 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 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 11 [2022-11-02 20:38:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:47,267 INFO L225 Difference]: With dead ends: 2991 [2022-11-02 20:38:47,268 INFO L226 Difference]: Without dead ends: 2991 [2022-11-02 20:38:47,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=293, Invalid=463, Unknown=0, NotChecked=0, Total=756 [2022-11-02 20:38:47,269 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 279 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:47,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 0 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:38:47,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2022-11-02 20:38:47,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 1886. [2022-11-02 20:38:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1886 states, 1879 states have (on average 4.4630122405534856) internal successors, (8386), 1885 states have internal predecessors, (8386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:47,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1886 states to 1886 states and 8386 transitions. [2022-11-02 20:38:47,408 INFO L78 Accepts]: Start accepts. Automaton has 1886 states and 8386 transitions. Word has length 11 [2022-11-02 20:38:47,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:47,408 INFO L495 AbstractCegarLoop]: Abstraction has 1886 states and 8386 transitions. [2022-11-02 20:38:47,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.0625) internal successors, (33), 16 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) [2022-11-02 20:38:47,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1886 states and 8386 transitions. [2022-11-02 20:38:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-11-02 20:38:47,410 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:47,410 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:47,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:47,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-02 20:38:47,611 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:47,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:47,612 INFO L85 PathProgramCache]: Analyzing trace with hash 104807331, now seen corresponding path program 3 times [2022-11-02 20:38:47,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:47,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811891924] [2022-11-02 20:38:47,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:47,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:47,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:47,790 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:47,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:47,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811891924] [2022-11-02 20:38:47,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811891924] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:47,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2007347333] [2022-11-02 20:38:47,792 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:38:47,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:47,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:47,793 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:47,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-02 20:38:47,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:38:47,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:47,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:38:47,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:48,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:48,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2007347333] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:48,154 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:48,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 18 [2022-11-02 20:38:48,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612987969] [2022-11-02 20:38:48,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:48,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-02 20:38:48,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:48,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-02 20:38:48,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:38:48,156 INFO L87 Difference]: Start difference. First operand 1886 states and 8386 transitions. Second operand has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:48,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:48,881 INFO L93 Difference]: Finished difference Result 3526 states and 14545 transitions. [2022-11-02 20:38:48,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:38:48,882 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-11-02 20:38:48,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:48,956 INFO L225 Difference]: With dead ends: 3526 [2022-11-02 20:38:48,956 INFO L226 Difference]: Without dead ends: 3526 [2022-11-02 20:38:48,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=368, Invalid=562, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:38:48,957 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 419 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:48,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 0 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:38:48,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3526 states. [2022-11-02 20:38:49,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3526 to 2209. [2022-11-02 20:38:49,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 2202 states have (on average 4.5862851952770205) internal successors, (10099), 2208 states have internal predecessors, (10099), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 10099 transitions. [2022-11-02 20:38:49,069 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 10099 transitions. Word has length 12 [2022-11-02 20:38:49,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:49,071 INFO L495 AbstractCegarLoop]: Abstraction has 2209 states and 10099 transitions. [2022-11-02 20:38:49,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.894736842105263) internal successors, (36), 19 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:49,072 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 10099 transitions. [2022-11-02 20:38:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:38:49,074 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:49,074 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:49,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:49,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:49,291 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:49,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:49,291 INFO L85 PathProgramCache]: Analyzing trace with hash 322595657, now seen corresponding path program 4 times [2022-11-02 20:38:49,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:49,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770432961] [2022-11-02 20:38:49,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:49,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:49,471 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:49,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:49,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770432961] [2022-11-02 20:38:49,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770432961] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:49,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14276256] [2022-11-02 20:38:49,472 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:38:49,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:49,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:49,474 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:49,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-02 20:38:49,582 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:38:49,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:49,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:38:49,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:49,746 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:49,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:49,897 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:49,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14276256] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:49,898 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:49,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-02 20:38:49,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580814703] [2022-11-02 20:38:49,898 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:49,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:38:49,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:49,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:38:49,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=334, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:38:49,900 INFO L87 Difference]: Start difference. First operand 2209 states and 10099 transitions. Second operand has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:50,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:50,847 INFO L93 Difference]: Finished difference Result 4082 states and 16753 transitions. [2022-11-02 20:38:50,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:38:50,848 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2022-11-02 20:38:50,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:50,870 INFO L225 Difference]: With dead ends: 4082 [2022-11-02 20:38:50,870 INFO L226 Difference]: Without dead ends: 4082 [2022-11-02 20:38:50,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 348 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=542, Invalid=864, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:38:50,872 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 489 mSDsluCounter, 230 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 489 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:50,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [489 Valid, 0 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 371 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:38:50,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4082 states. [2022-11-02 20:38:51,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4082 to 2342. [2022-11-02 20:38:51,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2342 states, 2335 states have (on average 4.651391862955032) internal successors, (10861), 2341 states have internal predecessors, (10861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:51,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2342 states to 2342 states and 10861 transitions. [2022-11-02 20:38:51,069 INFO L78 Accepts]: Start accepts. Automaton has 2342 states and 10861 transitions. Word has length 13 [2022-11-02 20:38:51,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:51,069 INFO L495 AbstractCegarLoop]: Abstraction has 2342 states and 10861 transitions. [2022-11-02 20:38:51,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:51,070 INFO L276 IsEmpty]: Start isEmpty. Operand 2342 states and 10861 transitions. [2022-11-02 20:38:51,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:38:51,073 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:51,073 INFO L195 NwaCegarLoop]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:51,114 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:51,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:51,295 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:51,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:51,295 INFO L85 PathProgramCache]: Analyzing trace with hash 881842192, now seen corresponding path program 5 times [2022-11-02 20:38:51,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:51,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362347708] [2022-11-02 20:38:51,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:51,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:51,443 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:51,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:51,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362347708] [2022-11-02 20:38:51,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362347708] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:51,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1649729874] [2022-11-02 20:38:51,444 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:38:51,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:51,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:51,446 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:51,455 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-02 20:38:51,548 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-02 20:38:51,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:51,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:38:51,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:51,711 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:51,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:51,854 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:51,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1649729874] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:51,854 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:51,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-02 20:38:51,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333537176] [2022-11-02 20:38:51,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:51,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-11-02 20:38:51,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:51,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-11-02 20:38:51,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=344, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:38:51,856 INFO L87 Difference]: Start difference. First operand 2342 states and 10861 transitions. Second operand has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:52,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:52,948 INFO L93 Difference]: Finished difference Result 5412 states and 22502 transitions. [2022-11-02 20:38:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-02 20:38:52,949 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2022-11-02 20:38:52,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:52,978 INFO L225 Difference]: With dead ends: 5412 [2022-11-02 20:38:52,979 INFO L226 Difference]: Without dead ends: 5412 [2022-11-02 20:38:52,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 485 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=640, Invalid=1082, Unknown=0, NotChecked=0, Total=1722 [2022-11-02 20:38:52,980 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 624 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 464 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:52,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 0 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 464 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:38:52,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5412 states. [2022-11-02 20:38:53,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5412 to 2536. [2022-11-02 20:38:53,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2536 states, 2529 states have (on average 4.675365757216291) internal successors, (11824), 2535 states have internal predecessors, (11824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:53,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2536 states to 2536 states and 11824 transitions. [2022-11-02 20:38:53,157 INFO L78 Accepts]: Start accepts. Automaton has 2536 states and 11824 transitions. Word has length 13 [2022-11-02 20:38:53,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:53,159 INFO L495 AbstractCegarLoop]: Abstraction has 2536 states and 11824 transitions. [2022-11-02 20:38:53,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 1.7727272727272727) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:53,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2536 states and 11824 transitions. [2022-11-02 20:38:53,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-11-02 20:38:53,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:53,163 INFO L195 NwaCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:53,203 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:53,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-02 20:38:53,379 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:53,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:53,379 INFO L85 PathProgramCache]: Analyzing trace with hash -845749269, now seen corresponding path program 6 times [2022-11-02 20:38:53,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:53,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354013913] [2022-11-02 20:38:53,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:53,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:53,472 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:53,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:53,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354013913] [2022-11-02 20:38:53,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354013913] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:53,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1930201650] [2022-11-02 20:38:53,473 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-02 20:38:53,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:53,474 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:53,475 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:53,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-11-02 20:38:53,583 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-11-02 20:38:53,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:53,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:38:53,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:53,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:53,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:53,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1930201650] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:53,919 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:53,919 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2022-11-02 20:38:53,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653292877] [2022-11-02 20:38:53,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:53,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:38:53,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:53,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:38:53,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=361, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:38:53,920 INFO L87 Difference]: Start difference. First operand 2536 states and 11824 transitions. Second operand has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:56,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:56,747 INFO L93 Difference]: Finished difference Result 6502 states and 27747 transitions. [2022-11-02 20:38:56,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-11-02 20:38:56,748 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 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 [2022-11-02 20:38:56,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:56,784 INFO L225 Difference]: With dead ends: 6502 [2022-11-02 20:38:56,784 INFO L226 Difference]: Without dead ends: 6405 [2022-11-02 20:38:56,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2087 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1698, Invalid=5274, Unknown=0, NotChecked=0, Total=6972 [2022-11-02 20:38:56,787 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 734 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 1003 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 734 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 1003 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:56,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [734 Valid, 0 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 1003 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-02 20:38:56,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6405 states. [2022-11-02 20:38:56,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6405 to 3366. [2022-11-02 20:38:56,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3366 states, 3359 states have (on average 4.864543018755582) internal successors, (16340), 3365 states have internal predecessors, (16340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:56,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3366 states to 3366 states and 16340 transitions. [2022-11-02 20:38:56,949 INFO L78 Accepts]: Start accepts. Automaton has 3366 states and 16340 transitions. Word has length 13 [2022-11-02 20:38:56,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:56,949 INFO L495 AbstractCegarLoop]: Abstraction has 3366 states and 16340 transitions. [2022-11-02 20:38:56,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 1.8571428571428572) internal successors, (39), 22 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:56,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3366 states and 16340 transitions. [2022-11-02 20:38:56,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:38:56,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:56,953 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1] [2022-11-02 20:38:56,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:57,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:57,166 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:57,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:57,167 INFO L85 PathProgramCache]: Analyzing trace with hash -226877895, now seen corresponding path program 3 times [2022-11-02 20:38:57,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:57,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753104582] [2022-11-02 20:38:57,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:57,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:57,507 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:57,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:57,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753104582] [2022-11-02 20:38:57,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753104582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:57,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1379473564] [2022-11-02 20:38:57,508 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:38:57,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:57,509 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:57,523 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:57,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-11-02 20:38:57,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:38:57,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:38:57,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-02 20:38:57,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-02 20:38:57,732 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:38:57,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1379473564] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:38:57,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:38:57,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 19 [2022-11-02 20:38:57,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529398047] [2022-11-02 20:38:57,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:38:57,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:38:57,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:57,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:38:57,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:38:57,735 INFO L87 Difference]: Start difference. First operand 3366 states and 16340 transitions. Second operand has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2022-11-02 20:38:57,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:38:57,900 INFO L93 Difference]: Finished difference Result 4432 states and 20497 transitions. [2022-11-02 20:38:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:38:57,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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) Word has length 14 [2022-11-02 20:38:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:38:57,928 INFO L225 Difference]: With dead ends: 4432 [2022-11-02 20:38:57,929 INFO L226 Difference]: Without dead ends: 4370 [2022-11-02 20:38:57,929 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2022-11-02 20:38:57,930 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 71 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:38:57,930 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 0 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:38:57,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4370 states. [2022-11-02 20:38:58,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4370 to 3301. [2022-11-02 20:38:58,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3301 states, 3294 states have (on average 4.789921068609593) internal successors, (15778), 3300 states have internal predecessors, (15778), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:38:58,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3301 states to 3301 states and 15778 transitions. [2022-11-02 20:38:58,168 INFO L78 Accepts]: Start accepts. Automaton has 3301 states and 15778 transitions. Word has length 14 [2022-11-02 20:38:58,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:38:58,169 INFO L495 AbstractCegarLoop]: Abstraction has 3301 states and 15778 transitions. [2022-11-02 20:38:58,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.375) internal successors, (11), 8 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) [2022-11-02 20:38:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3301 states and 15778 transitions. [2022-11-02 20:38:58,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:38:58,175 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:38:58,175 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:38:58,218 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-11-02 20:38:58,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:58,403 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:38:58,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:38:58,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1366687018, now seen corresponding path program 1 times [2022-11-02 20:38:58,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:38:58,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751605363] [2022-11-02 20:38:58,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:58,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:38:58,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:58,573 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:58,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:38:58,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751605363] [2022-11-02 20:38:58,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751605363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:38:58,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1778327206] [2022-11-02 20:38:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:38:58,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:38:58,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:38:58,576 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:38:58,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-02 20:38:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:38:58,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:38:58,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:38:58,890 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:58,890 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:38:59,065 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:38:59,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1778327206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:38:59,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:38:59,066 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-11-02 20:38:59,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505164840] [2022-11-02 20:38:59,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:38:59,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:38:59,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:38:59,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:38:59,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=458, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:38:59,067 INFO L87 Difference]: Start difference. First operand 3301 states and 15778 transitions. Second operand has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 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) [2022-11-02 20:39:00,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:00,592 INFO L93 Difference]: Finished difference Result 6545 states and 26584 transitions. [2022-11-02 20:39:00,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-11-02 20:39:00,592 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 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) Word has length 14 [2022-11-02 20:39:00,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:00,624 INFO L225 Difference]: With dead ends: 6545 [2022-11-02 20:39:00,625 INFO L226 Difference]: Without dead ends: 6505 [2022-11-02 20:39:00,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=927, Invalid=1725, Unknown=0, NotChecked=0, Total=2652 [2022-11-02 20:39:00,626 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 731 mSDsluCounter, 341 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:00,627 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [731 Valid, 0 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:39:00,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6505 states. [2022-11-02 20:39:00,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6505 to 3226. [2022-11-02 20:39:00,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 3219 states have (on average 4.831314072693383) internal successors, (15552), 3225 states have internal predecessors, (15552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:00,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 15552 transitions. [2022-11-02 20:39:00,855 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 15552 transitions. Word has length 14 [2022-11-02 20:39:00,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:00,858 INFO L495 AbstractCegarLoop]: Abstraction has 3226 states and 15552 transitions. [2022-11-02 20:39:00,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 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) [2022-11-02 20:39:00,860 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 15552 transitions. [2022-11-02 20:39:00,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:39:00,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:00,864 INFO L195 NwaCegarLoop]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:00,912 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:01,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-11-02 20:39:01,079 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:39:01,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:01,079 INFO L85 PathProgramCache]: Analyzing trace with hash -247802052, now seen corresponding path program 7 times [2022-11-02 20:39:01,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:01,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165603819] [2022-11-02 20:39:01,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:01,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:01,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:01,258 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:01,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:01,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165603819] [2022-11-02 20:39:01,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165603819] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:01,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [219759804] [2022-11-02 20:39:01,258 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-02 20:39:01,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:01,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:01,263 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:01,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-11-02 20:39:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:01,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:39:01,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:01,547 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:01,547 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:01,769 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:01,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [219759804] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:01,770 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:01,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-11-02 20:39:01,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769301094] [2022-11-02 20:39:01,770 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:01,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:39:01,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:01,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:39:01,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=455, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:39:01,772 INFO L87 Difference]: Start difference. First operand 3226 states and 15552 transitions. Second operand has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 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) [2022-11-02 20:39:03,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:03,565 INFO L93 Difference]: Finished difference Result 8215 states and 32747 transitions. [2022-11-02 20:39:03,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 20:39:03,566 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 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) Word has length 14 [2022-11-02 20:39:03,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:03,602 INFO L225 Difference]: With dead ends: 8215 [2022-11-02 20:39:03,603 INFO L226 Difference]: Without dead ends: 8146 [2022-11-02 20:39:03,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1202 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1243, Invalid=2297, Unknown=0, NotChecked=0, Total=3540 [2022-11-02 20:39:03,605 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 990 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:03,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [990 Valid, 0 Invalid, 747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:39:03,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8146 states. [2022-11-02 20:39:03,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8146 to 3201. [2022-11-02 20:39:03,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3201 states, 3194 states have (on average 4.818096430807764) internal successors, (15389), 3200 states have internal predecessors, (15389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:03,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3201 states to 3201 states and 15389 transitions. [2022-11-02 20:39:03,850 INFO L78 Accepts]: Start accepts. Automaton has 3201 states and 15389 transitions. Word has length 14 [2022-11-02 20:39:03,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:03,850 INFO L495 AbstractCegarLoop]: Abstraction has 3201 states and 15389 transitions. [2022-11-02 20:39:03,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 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) [2022-11-02 20:39:03,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3201 states and 15389 transitions. [2022-11-02 20:39:03,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-11-02 20:39:03,857 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:03,857 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:03,888 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-11-02 20:39:04,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-02 20:39:04,071 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:39:04,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash -248010806, now seen corresponding path program 8 times [2022-11-02 20:39:04,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:04,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495402246] [2022-11-02 20:39:04,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:04,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:04,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:04,249 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:04,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:04,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495402246] [2022-11-02 20:39:04,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495402246] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:04,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059559774] [2022-11-02 20:39:04,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:39:04,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:04,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:04,252 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:04,278 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-11-02 20:39:04,369 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:39:04,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:39:04,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:39:04,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:04,551 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:04,552 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:04,721 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:04,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059559774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:04,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:04,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 24 [2022-11-02 20:39:04,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634858261] [2022-11-02 20:39:04,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:04,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-11-02 20:39:04,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:04,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-11-02 20:39:04,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2022-11-02 20:39:04,724 INFO L87 Difference]: Start difference. First operand 3201 states and 15389 transitions. Second operand has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 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) [2022-11-02 20:39:06,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:06,234 INFO L93 Difference]: Finished difference Result 9059 states and 35903 transitions. [2022-11-02 20:39:06,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-02 20:39:06,234 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 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) Word has length 14 [2022-11-02 20:39:06,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:06,261 INFO L225 Difference]: With dead ends: 9059 [2022-11-02 20:39:06,261 INFO L226 Difference]: Without dead ends: 8939 [2022-11-02 20:39:06,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 917 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1058, Invalid=1804, Unknown=0, NotChecked=0, Total=2862 [2022-11-02 20:39:06,263 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 751 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:06,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 0 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:39:06,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8939 states. [2022-11-02 20:39:06,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8939 to 2757. [2022-11-02 20:39:06,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2757 states, 2750 states have (on average 4.729454545454545) internal successors, (13006), 2756 states have internal predecessors, (13006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:06,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2757 states to 2757 states and 13006 transitions. [2022-11-02 20:39:06,442 INFO L78 Accepts]: Start accepts. Automaton has 2757 states and 13006 transitions. Word has length 14 [2022-11-02 20:39:06,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:06,443 INFO L495 AbstractCegarLoop]: Abstraction has 2757 states and 13006 transitions. [2022-11-02 20:39:06,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 1.68) internal successors, (42), 25 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) [2022-11-02 20:39:06,443 INFO L276 IsEmpty]: Start isEmpty. Operand 2757 states and 13006 transitions. [2022-11-02 20:39:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:39:06,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:06,447 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:06,485 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:06,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-11-02 20:39:06,663 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:39:06,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:06,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1100833589, now seen corresponding path program 9 times [2022-11-02 20:39:06,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:06,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533965970] [2022-11-02 20:39:06,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:06,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:06,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:06,847 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:06,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:06,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533965970] [2022-11-02 20:39:06,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533965970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:06,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [268909460] [2022-11-02 20:39:06,848 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:39:06,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:06,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:06,850 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:06,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-11-02 20:39:06,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:39:06,959 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:39:06,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:39:06,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:07,148 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:07,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:07,360 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:07,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [268909460] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:07,361 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:07,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-02 20:39:07,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391849995] [2022-11-02 20:39:07,361 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:07,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:39:07,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:07,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:39:07,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=272, Invalid=540, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:39:07,363 INFO L87 Difference]: Start difference. First operand 2757 states and 13006 transitions. Second operand has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 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) [2022-11-02 20:39:08,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:08,687 INFO L93 Difference]: Finished difference Result 6979 states and 27931 transitions. [2022-11-02 20:39:08,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-02 20:39:08,688 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 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 15 [2022-11-02 20:39:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:08,718 INFO L225 Difference]: With dead ends: 6979 [2022-11-02 20:39:08,719 INFO L226 Difference]: Without dead ends: 6895 [2022-11-02 20:39:08,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 668 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=930, Invalid=1520, Unknown=0, NotChecked=0, Total=2450 [2022-11-02 20:39:08,720 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 750 mSDsluCounter, 297 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 750 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:08,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [750 Valid, 0 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-02 20:39:08,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6895 states. [2022-11-02 20:39:08,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6895 to 2345. [2022-11-02 20:39:08,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 2340 states have (on average 4.613675213675213) internal successors, (10796), 2344 states have internal predecessors, (10796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:08,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 10796 transitions. [2022-11-02 20:39:08,858 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 10796 transitions. Word has length 15 [2022-11-02 20:39:08,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:08,858 INFO L495 AbstractCegarLoop]: Abstraction has 2345 states and 10796 transitions. [2022-11-02 20:39:08,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 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) [2022-11-02 20:39:08,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 10796 transitions. [2022-11-02 20:39:08,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-02 20:39:08,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:08,864 INFO L195 NwaCegarLoop]: trace histogram [5, 3, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:08,905 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:09,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-11-02 20:39:09,087 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:39:09,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:09,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1009485301, now seen corresponding path program 10 times [2022-11-02 20:39:09,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:09,087 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833891650] [2022-11-02 20:39:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:09,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:09,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:09,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:09,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833891650] [2022-11-02 20:39:09,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833891650] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:09,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26903963] [2022-11-02 20:39:09,318 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:39:09,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:09,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:09,320 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:09,342 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-11-02 20:39:09,435 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:39:09,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:39:09,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:39:09,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:09,629 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:09,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:09,879 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:09,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26903963] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:09,880 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:09,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 27 [2022-11-02 20:39:09,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614134835] [2022-11-02 20:39:09,881 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:09,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-11-02 20:39:09,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:09,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-11-02 20:39:09,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=580, Unknown=0, NotChecked=0, Total=812 [2022-11-02 20:39:09,882 INFO L87 Difference]: Start difference. First operand 2345 states and 10796 transitions. Second operand has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 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) [2022-11-02 20:39:11,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:11,681 INFO L93 Difference]: Finished difference Result 7920 states and 30120 transitions. [2022-11-02 20:39:11,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-02 20:39:11,681 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 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 15 [2022-11-02 20:39:11,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:11,703 INFO L225 Difference]: With dead ends: 7920 [2022-11-02 20:39:11,703 INFO L226 Difference]: Without dead ends: 7817 [2022-11-02 20:39:11,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1241 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1384, Invalid=2522, Unknown=0, NotChecked=0, Total=3906 [2022-11-02 20:39:11,704 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 998 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:11,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [998 Valid, 0 Invalid, 698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:39:11,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7817 states. [2022-11-02 20:39:11,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7817 to 1933. [2022-11-02 20:39:11,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1933 states, 1928 states have (on average 4.4828838174273855) internal successors, (8643), 1932 states have internal predecessors, (8643), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:11,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1933 states to 1933 states and 8643 transitions. [2022-11-02 20:39:11,829 INFO L78 Accepts]: Start accepts. Automaton has 1933 states and 8643 transitions. Word has length 15 [2022-11-02 20:39:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:11,830 INFO L495 AbstractCegarLoop]: Abstraction has 1933 states and 8643 transitions. [2022-11-02 20:39:11,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 1.6071428571428572) internal successors, (45), 28 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) [2022-11-02 20:39:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1933 states and 8643 transitions. [2022-11-02 20:39:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:39:11,834 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:11,834 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:11,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:12,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-11-02 20:39:12,063 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:39:12,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:12,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1643785652, now seen corresponding path program 11 times [2022-11-02 20:39:12,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:12,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257393251] [2022-11-02 20:39:12,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:12,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:12,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:12,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257393251] [2022-11-02 20:39:12,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257393251] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:12,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203545476] [2022-11-02 20:39:12,361 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-02 20:39:12,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:12,362 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:12,363 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:12,393 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-11-02 20:39:12,492 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-02 20:39:12,493 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:39:12,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:39:12,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:12,737 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:12,738 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:13,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203545476] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:13,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:13,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-11-02 20:39:13,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133348819] [2022-11-02 20:39:13,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:13,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:39:13,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:13,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:39:13,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=669, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:39:13,032 INFO L87 Difference]: Start difference. First operand 1933 states and 8643 transitions. Second operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 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) [2022-11-02 20:39:14,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:14,132 INFO L93 Difference]: Finished difference Result 5459 states and 20710 transitions. [2022-11-02 20:39:14,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-02 20:39:14,132 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 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 16 [2022-11-02 20:39:14,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:14,151 INFO L225 Difference]: With dead ends: 5459 [2022-11-02 20:39:14,152 INFO L226 Difference]: Without dead ends: 5417 [2022-11-02 20:39:14,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=873, Invalid=1479, Unknown=0, NotChecked=0, Total=2352 [2022-11-02 20:39:14,153 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 611 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:14,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [611 Valid, 0 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-02 20:39:14,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5417 states. [2022-11-02 20:39:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5417 to 1777. [2022-11-02 20:39:14,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1772 states have (on average 4.445823927765237) internal successors, (7878), 1776 states have internal predecessors, (7878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:14,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 7878 transitions. [2022-11-02 20:39:14,232 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 7878 transitions. Word has length 16 [2022-11-02 20:39:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:14,232 INFO L495 AbstractCegarLoop]: Abstraction has 1777 states and 7878 transitions. [2022-11-02 20:39:14,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 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) [2022-11-02 20:39:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 7878 transitions. [2022-11-02 20:39:14,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:39:14,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:14,237 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:14,276 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-11-02 20:39:14,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-11-02 20:39:14,459 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:39:14,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash 798691926, now seen corresponding path program 2 times [2022-11-02 20:39:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:14,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469882703] [2022-11-02 20:39:14,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:14,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:14,747 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:14,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:14,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469882703] [2022-11-02 20:39:14,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469882703] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:14,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1654873813] [2022-11-02 20:39:14,748 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:39:14,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:14,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:14,749 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:14,770 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-11-02 20:39:14,876 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:39:14,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:39:14,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:39:14,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:15,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:15,390 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:15,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1654873813] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:15,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:15,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-11-02 20:39:15,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542081438] [2022-11-02 20:39:15,391 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:15,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:39:15,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:15,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:39:15,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=296, Invalid=696, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:39:15,392 INFO L87 Difference]: Start difference. First operand 1777 states and 7878 transitions. Second operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 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) [2022-11-02 20:39:17,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:17,199 INFO L93 Difference]: Finished difference Result 7380 states and 26634 transitions. [2022-11-02 20:39:17,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-11-02 20:39:17,199 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 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 16 [2022-11-02 20:39:17,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:17,219 INFO L225 Difference]: With dead ends: 7380 [2022-11-02 20:39:17,219 INFO L226 Difference]: Without dead ends: 7291 [2022-11-02 20:39:17,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1221 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1395, Invalid=2511, Unknown=0, NotChecked=0, Total=3906 [2022-11-02 20:39:17,222 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1194 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 214 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1194 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 214 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:17,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1194 Valid, 0 Invalid, 733 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [214 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:39:17,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7291 states. [2022-11-02 20:39:17,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7291 to 1024. [2022-11-02 20:39:17,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1024 states, 1021 states have (on average 3.8961802154750247) internal successors, (3978), 1023 states have internal predecessors, (3978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:17,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 3978 transitions. [2022-11-02 20:39:17,296 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 3978 transitions. Word has length 16 [2022-11-02 20:39:17,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:17,296 INFO L495 AbstractCegarLoop]: Abstraction has 1024 states and 3978 transitions. [2022-11-02 20:39:17,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 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) [2022-11-02 20:39:17,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 3978 transitions. [2022-11-02 20:39:17,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:39:17,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:17,299 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:17,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-11-02 20:39:17,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:17,515 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:39:17,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:17,515 INFO L85 PathProgramCache]: Analyzing trace with hash -204026136, now seen corresponding path program 3 times [2022-11-02 20:39:17,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:17,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224168614] [2022-11-02 20:39:17,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:17,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:17,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:17,703 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:17,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:17,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224168614] [2022-11-02 20:39:17,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224168614] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:17,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [538664686] [2022-11-02 20:39:17,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:39:17,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:17,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:17,706 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:17,726 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-11-02 20:39:17,834 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-02 20:39:17,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:39:17,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:39:17,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:18,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:18,321 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:18,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [538664686] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:18,321 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:18,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 30 [2022-11-02 20:39:18,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335045987] [2022-11-02 20:39:18,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:18,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-02 20:39:18,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:18,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-02 20:39:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2022-11-02 20:39:18,324 INFO L87 Difference]: Start difference. First operand 1024 states and 3978 transitions. Second operand has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 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) [2022-11-02 20:39:20,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:20,390 INFO L93 Difference]: Finished difference Result 7075 states and 24256 transitions. [2022-11-02 20:39:20,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-02 20:39:20,391 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 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 16 [2022-11-02 20:39:20,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:20,407 INFO L225 Difference]: With dead ends: 7075 [2022-11-02 20:39:20,408 INFO L226 Difference]: Without dead ends: 7059 [2022-11-02 20:39:20,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1714 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1766, Invalid=3204, Unknown=0, NotChecked=0, Total=4970 [2022-11-02 20:39:20,410 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 1047 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1047 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 174 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:20,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1047 Valid, 0 Invalid, 740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [174 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-02 20:39:20,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7059 states. [2022-11-02 20:39:20,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7059 to 850. [2022-11-02 20:39:20,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 850 states, 849 states have (on average 3.7220259128386335) internal successors, (3160), 849 states have internal predecessors, (3160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:20,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 850 states to 850 states and 3160 transitions. [2022-11-02 20:39:20,474 INFO L78 Accepts]: Start accepts. Automaton has 850 states and 3160 transitions. Word has length 16 [2022-11-02 20:39:20,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:20,474 INFO L495 AbstractCegarLoop]: Abstraction has 850 states and 3160 transitions. [2022-11-02 20:39:20,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 1.5483870967741935) internal successors, (48), 31 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) [2022-11-02 20:39:20,475 INFO L276 IsEmpty]: Start isEmpty. Operand 850 states and 3160 transitions. [2022-11-02 20:39:20,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-02 20:39:20,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:20,477 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:20,518 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:20,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:20,703 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:39:20,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:20,703 INFO L85 PathProgramCache]: Analyzing trace with hash -530011523, now seen corresponding path program 3 times [2022-11-02 20:39:20,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:20,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063861544] [2022-11-02 20:39:20,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:20,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:20,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:21,131 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:21,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:21,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063861544] [2022-11-02 20:39:21,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063861544] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:21,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206424419] [2022-11-02 20:39:21,132 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:39:21,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:21,132 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:21,135 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:21,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-11-02 20:39:21,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-11-02 20:39:21,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:39:21,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-02 20:39:21,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:21,568 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:21,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:21,852 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:21,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206424419] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:21,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:21,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 33 [2022-11-02 20:39:21,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073905035] [2022-11-02 20:39:21,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:21,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-02 20:39:21,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:21,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-02 20:39:21,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=376, Invalid=814, Unknown=0, NotChecked=0, Total=1190 [2022-11-02 20:39:21,855 INFO L87 Difference]: Start difference. First operand 850 states and 3160 transitions. Second operand has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 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) [2022-11-02 20:39:22,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:22,598 INFO L93 Difference]: Finished difference Result 1618 states and 6040 transitions. [2022-11-02 20:39:22,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-02 20:39:22,598 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 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 16 [2022-11-02 20:39:22,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:22,602 INFO L225 Difference]: With dead ends: 1618 [2022-11-02 20:39:22,602 INFO L226 Difference]: Without dead ends: 1618 [2022-11-02 20:39:22,603 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=636, Invalid=1344, Unknown=0, NotChecked=0, Total=1980 [2022-11-02 20:39:22,603 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 942 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:22,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 0 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-02 20:39:22,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1618 states. [2022-11-02 20:39:22,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1618 to 1618. [2022-11-02 20:39:22,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1618 states, 1617 states have (on average 3.735312306740878) internal successors, (6040), 1617 states have internal predecessors, (6040), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:22,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 6040 transitions. [2022-11-02 20:39:22,638 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 6040 transitions. Word has length 16 [2022-11-02 20:39:22,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:22,639 INFO L495 AbstractCegarLoop]: Abstraction has 1618 states and 6040 transitions. [2022-11-02 20:39:22,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 1.411764705882353) internal successors, (48), 34 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) [2022-11-02 20:39:22,639 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 6040 transitions. [2022-11-02 20:39:22,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 20:39:22,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 20:39:22,644 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:22,671 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-11-02 20:39:22,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:22,851 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 19 more)] === [2022-11-02 20:39:22,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:22,851 INFO L85 PathProgramCache]: Analyzing trace with hash 719630141, now seen corresponding path program 4 times [2022-11-02 20:39:22,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:22,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271239221] [2022-11-02 20:39:22,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:22,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:22,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:24,129 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:24,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:24,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271239221] [2022-11-02 20:39:24,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271239221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:24,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998077064] [2022-11-02 20:39:24,130 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:39:24,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:24,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:24,132 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:24,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-11-02 20:39:24,283 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:39:24,283 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:39:24,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-02 20:39:24,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:24,602 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 208 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-02 20:39:24,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:39:24,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998077064] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:24,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:39:24,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [23] total 38 [2022-11-02 20:39:24,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44004269] [2022-11-02 20:39:24,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:24,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:39:24,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:24,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:39:24,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=1213, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:39:24,605 INFO L87 Difference]: Start difference. First operand 1618 states and 6040 transitions. Second operand has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) [2022-11-02 20:39:24,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 20:39:24,762 INFO L93 Difference]: Finished difference Result 914 states and 3336 transitions. [2022-11-02 20:39:24,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 20:39:24,762 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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 28 [2022-11-02 20:39:24,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 20:39:24,763 INFO L225 Difference]: With dead ends: 914 [2022-11-02 20:39:24,763 INFO L226 Difference]: Without dead ends: 0 [2022-11-02 20:39:24,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=193, Invalid=1213, Unknown=0, NotChecked=0, Total=1406 [2022-11-02 20:39:24,763 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 81 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 20:39:24,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 0 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 20:39:24,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-02 20:39:24,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-02 20:39:24,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-02 20:39:24,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-02 20:39:24,764 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-11-02 20:39:24,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 20:39:24,764 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-02 20:39:24,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 15 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) [2022-11-02 20:39:24,765 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-02 20:39:24,765 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-02 20:39:24,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 22 remaining) [2022-11-02 20:39:24,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 22 remaining) [2022-11-02 20:39:24,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 22 remaining) [2022-11-02 20:39:24,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 22 remaining) [2022-11-02 20:39:24,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (17 of 22 remaining) [2022-11-02 20:39:24,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 22 remaining) [2022-11-02 20:39:24,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2022-11-02 20:39:24,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2022-11-02 20:39:24,768 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2022-11-02 20:39:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2022-11-02 20:39:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2022-11-02 20:39:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2022-11-02 20:39:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 22 remaining) [2022-11-02 20:39:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 22 remaining) [2022-11-02 20:39:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2022-11-02 20:39:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2022-11-02 20:39:24,769 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2022-11-02 20:39:24,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2022-11-02 20:39:24,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2022-11-02 20:39:24,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2022-11-02 20:39:24,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2022-11-02 20:39:24,770 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2022-11-02 20:39:24,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:24,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2022-11-02 20:39:24,977 INFO L444 BasicCegarLoop]: Path program histogram: [11, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:24,982 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:39:24,982 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:39:24,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:39:24 BasicIcfg [2022-11-02 20:39:24,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:39:24,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:39:24,986 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:39:24,986 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:39:24,987 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:38:31" (3/4) ... [2022-11-02 20:39:24,990 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:39:24,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t1 [2022-11-02 20:39:24,997 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure t2 [2022-11-02 20:39:25,001 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-11-02 20:39:25,002 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2022-11-02 20:39:25,002 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:39:25,002 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:39:25,035 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:39:25,036 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:39:25,036 INFO L158 Benchmark]: Toolchain (without parser) took 55291.67ms. Allocated memory was 134.2MB in the beginning and 658.5MB in the end (delta: 524.3MB). Free memory was 98.2MB in the beginning and 479.5MB in the end (delta: -381.3MB). Peak memory consumption was 142.5MB. Max. memory is 16.1GB. [2022-11-02 20:39:25,037 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory was 52.0MB in the beginning and 51.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:25,037 INFO L158 Benchmark]: CACSL2BoogieTranslator took 633.43ms. Allocated memory is still 134.2MB. Free memory was 98.0MB in the beginning and 100.6MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-02 20:39:25,037 INFO L158 Benchmark]: Boogie Procedure Inliner took 81.49ms. Allocated memory is still 134.2MB. Free memory was 100.6MB in the beginning and 98.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-02 20:39:25,037 INFO L158 Benchmark]: Boogie Preprocessor took 59.16ms. Allocated memory is still 134.2MB. Free memory was 98.6MB in the beginning and 97.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:39:25,038 INFO L158 Benchmark]: RCFGBuilder took 591.85ms. Allocated memory is still 134.2MB. Free memory was 97.3MB in the beginning and 81.2MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2022-11-02 20:39:25,038 INFO L158 Benchmark]: TraceAbstraction took 53868.06ms. Allocated memory was 134.2MB in the beginning and 658.5MB in the end (delta: 524.3MB). Free memory was 80.5MB in the beginning and 482.7MB in the end (delta: -402.2MB). Peak memory consumption was 499.5MB. Max. memory is 16.1GB. [2022-11-02 20:39:25,038 INFO L158 Benchmark]: Witness Printer took 49.86ms. Allocated memory is still 658.5MB. Free memory was 482.7MB in the beginning and 479.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:39:25,040 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 81.8MB. Free memory was 52.0MB in the beginning and 51.9MB in the end (delta: 25.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 633.43ms. Allocated memory is still 134.2MB. Free memory was 98.0MB in the beginning and 100.6MB in the end (delta: -2.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 81.49ms. Allocated memory is still 134.2MB. Free memory was 100.6MB in the beginning and 98.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 59.16ms. Allocated memory is still 134.2MB. Free memory was 98.6MB in the beginning and 97.3MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 591.85ms. Allocated memory is still 134.2MB. Free memory was 97.3MB in the beginning and 81.2MB in the end (delta: 16.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 53868.06ms. Allocated memory was 134.2MB in the beginning and 658.5MB in the end (delta: 524.3MB). Free memory was 80.5MB in the beginning and 482.7MB in the end (delta: -402.2MB). Peak memory consumption was 499.5MB. Max. memory is 16.1GB. * Witness Printer took 49.86ms. Allocated memory is still 658.5MB. Free memory was 482.7MB in the beginning and 479.5MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.1s, 115 PlacesBefore, 31 PlacesAfterwards, 115 TransitionsBefore, 27 TransitionsAfterwards, 3570 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 121 TotalNumberOfCompositions, 3490 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3176, positive: 3162, positive conditional: 0, positive unconditional: 3162, negative: 14, negative conditional: 0, negative unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2250, positive: 2239, positive conditional: 0, positive unconditional: 2239, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2250, positive: 2235, positive conditional: 0, positive unconditional: 2235, negative: 15, negative conditional: 0, negative unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 15, positive: 4, positive conditional: 0, positive unconditional: 4, negative: 11, negative conditional: 0, negative unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 40, positive: 6, positive conditional: 0, positive unconditional: 6, negative: 34, negative conditional: 0, negative unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 3176, positive: 923, positive conditional: 0, positive unconditional: 923, negative: 3, negative conditional: 0, negative unconditional: 3, unknown: 2250, unknown conditional: 0, unknown unconditional: 2250] , Statistics on independence cache: Total cache size (in pairs): 7, Positive cache size: 7, Positive conditional cache size: 0, Positive unconditional cache size: 7, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 707]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 706]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 690]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 690]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 688]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 698]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 696]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 143 locations, 22 error locations. Started 1 CEGAR loops. OverallTime: 53.7s, OverallIterations: 33, TraceHistogramMax: 22, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.1s, AutomataDifference: 23.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 12017 SdHoareTripleChecker+Valid, 9.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 12017 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 7.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 5067 mSDsCounter, 1804 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8522 IncrementalHoareTripleChecker+Invalid, 10326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1804 mSolverCounterUnsat, 0 mSDtfsCounter, 8522 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1099 GetRequests, 236 SyntacticMatches, 0 SemanticMatches, 863 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12663 ImplicationChecksByTransitivity, 17.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3366occurred in iteration=22, InterpolantAutomatonStates: 584, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.7s AutomataMinimizationTime, 33 MinimizatonAttempts, 54568 StatesRemovedByMinimization, 26 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 12.6s InterpolantComputationTime, 663 NumberOfCodeBlocks, 663 NumberOfCodeBlocksAsserted, 90 NumberOfCheckSat, 831 ConstructedInterpolants, 0 QuantifiedInterpolants, 6243 SizeOfPredicates, 16 NumberOfNonLiveVariables, 4354 ConjunctsInSsa, 246 ConjunctsInUnsatCore, 79 InterpolantComputations, 13 PerfectInterpolantSequences, 323/1402 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 12 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:39:25,057 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a4c0563e-fcf0-4063-84ed-99b62ac2d623/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE