./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version 0e0057cc 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_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme --witnessprinter.witness.filename witness --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 fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 10:49:46,372 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 10:49:46,486 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Overflow-32bit-Automizer_Default.epf [2023-11-26 10:49:46,491 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 10:49:46,492 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 10:49:46,522 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 10:49:46,523 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 10:49:46,524 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 10:49:46,525 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 10:49:46,525 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 10:49:46,526 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 10:49:46,526 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 10:49:46,527 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 10:49:46,528 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 10:49:46,529 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 10:49:46,529 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 10:49:46,530 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 10:49:46,530 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 10:49:46,531 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 10:49:46,531 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 10:49:46,532 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 10:49:46,532 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 10:49:46,533 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 10:49:46,533 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 10:49:46,534 INFO L153 SettingsManager]: * Check absence of signed integer overflows=true [2023-11-26 10:49:46,534 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-26 10:49:46,535 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 10:49:46,535 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 10:49:46,536 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 10:49:46,536 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 10:49:46,537 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 10:49:46,537 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 10:49:46,537 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 10:49:46,538 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:46,538 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 10:49:46,539 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 10:49:46,539 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 10:49:46,540 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 10:49:46,540 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 10:49:46,540 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 10:49:46,541 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 10:49:46,541 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 10:49:46,542 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 10:49:46,542 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 10:49:46,543 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fdc85b042221b41aa26e62667e19ce1f6c246be9a2cb4f81fe8b15c8429db160 [2023-11-26 10:49:46,876 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 10:49:46,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 10:49:46,907 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 10:49:46,908 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 10:49:46,908 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 10:49:46,910 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i [2023-11-26 10:49:50,013 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 10:49:50,423 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 10:49:50,425 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_nondet_test1-1.i [2023-11-26 10:49:50,449 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/data/e602d810e/ef51385e4bc94784b2c1484746497188/FLAGd7171f83a [2023-11-26 10:49:50,471 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/data/e602d810e/ef51385e4bc94784b2c1484746497188 [2023-11-26 10:49:50,478 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 10:49:50,480 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 10:49:50,482 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:50,483 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 10:49:50,488 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 10:49:50,489 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:50" (1/1) ... [2023-11-26 10:49:50,490 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2b25fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:50, skipping insertion in model container [2023-11-26 10:49:50,490 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 10:49:50" (1/1) ... [2023-11-26 10:49:50,574 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 10:49:51,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:51,113 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 10:49:51,231 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 10:49:51,294 INFO L206 MainTranslator]: Completed translation [2023-11-26 10:49:51,295 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51 WrapperNode [2023-11-26 10:49:51,296 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 10:49:51,297 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:51,297 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 10:49:51,298 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 10:49:51,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,348 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,413 INFO L138 Inliner]: procedures = 177, calls = 177, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 760 [2023-11-26 10:49:51,414 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 10:49:51,415 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 10:49:51,415 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 10:49:51,415 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 10:49:51,426 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,427 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,438 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,507 INFO L175 MemorySlicer]: Split 163 memory accesses to 3 slices as follows [2, 5, 156]. 96 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 43 writes are split as follows [0, 1, 42]. [2023-11-26 10:49:51,508 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,508 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,546 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,556 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,561 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,566 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,576 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 10:49:51,577 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 10:49:51,577 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 10:49:51,577 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 10:49:51,578 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (1/1) ... [2023-11-26 10:49:51,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 10:49:51,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:51,627 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 10:49:51,666 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 10:49:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2023-11-26 10:49:51,676 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2023-11-26 10:49:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2023-11-26 10:49:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2023-11-26 10:49:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2023-11-26 10:49:51,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2023-11-26 10:49:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2023-11-26 10:49:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2023-11-26 10:49:51,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2023-11-26 10:49:51,680 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2023-11-26 10:49:51,681 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2023-11-26 10:49:51,681 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2023-11-26 10:49:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-11-26 10:49:51,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 10:49:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-26 10:49:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2023-11-26 10:49:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2023-11-26 10:49:51,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2023-11-26 10:49:51,683 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2023-11-26 10:49:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2023-11-26 10:49:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2023-11-26 10:49:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-26 10:49:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 10:49:51,684 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 10:49:51,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 10:49:51,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 10:49:51,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 10:49:51,940 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 10:49:51,942 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 10:49:53,214 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 10:49:53,253 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 10:49:53,253 INFO L309 CfgBuilder]: Removed 31 assume(true) statements. [2023-11-26 10:49:53,254 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:53 BoogieIcfgContainer [2023-11-26 10:49:53,254 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 10:49:53,256 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 10:49:53,256 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 10:49:53,260 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 10:49:53,260 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 10:49:50" (1/3) ... [2023-11-26 10:49:53,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24757ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:53, skipping insertion in model container [2023-11-26 10:49:53,261 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 10:49:51" (2/3) ... [2023-11-26 10:49:53,261 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24757ad4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 10:49:53, skipping insertion in model container [2023-11-26 10:49:53,262 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 10:49:53" (3/3) ... [2023-11-26 10:49:53,263 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_FNV_nondet_test1-1.i [2023-11-26 10:49:53,282 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 10:49:53,282 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-11-26 10:49:53,336 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 10:49:53,344 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=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@55f4e0ec, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 10:49:53,344 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-11-26 10:49:53,349 INFO L276 IsEmpty]: Start isEmpty. Operand has 196 states, 185 states have (on average 1.7027027027027026) internal successors, (315), 191 states have internal predecessors, (315), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:49:53,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 10:49:53,356 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:53,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:49:53,357 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:49:53,362 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:53,362 INFO L85 PathProgramCache]: Analyzing trace with hash 771919798, now seen corresponding path program 1 times [2023-11-26 10:49:53,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:53,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128037030] [2023-11-26 10:49:53,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:53,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:53,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:53,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:53,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:53,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128037030] [2023-11-26 10:49:53,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128037030] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:53,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:53,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:53,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547033402] [2023-11-26 10:49:53,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:53,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:53,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:53,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:53,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:53,606 INFO L87 Difference]: Start difference. First operand has 196 states, 185 states have (on average 1.7027027027027026) internal successors, (315), 191 states have internal predecessors, (315), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:53,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:53,724 INFO L93 Difference]: Finished difference Result 570 states and 942 transitions. [2023-11-26 10:49:53,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:53,727 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-26 10:49:53,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:53,740 INFO L225 Difference]: With dead ends: 570 [2023-11-26 10:49:53,741 INFO L226 Difference]: Without dead ends: 370 [2023-11-26 10:49:53,744 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 [2023-11-26 10:49:53,748 INFO L413 NwaCegarLoop]: 316 mSDtfsCounter, 260 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:53,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 590 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:49:53,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2023-11-26 10:49:53,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 191. [2023-11-26 10:49:53,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 181 states have (on average 1.5082872928176796) internal successors, (273), 186 states have internal predecessors, (273), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:49:53,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 279 transitions. [2023-11-26 10:49:53,809 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 279 transitions. Word has length 5 [2023-11-26 10:49:53,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:53,810 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 279 transitions. [2023-11-26 10:49:53,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:53,810 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 279 transitions. [2023-11-26 10:49:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 10:49:53,811 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:53,811 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 10:49:53,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 10:49:53,812 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:49:53,812 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:53,813 INFO L85 PathProgramCache]: Analyzing trace with hash 771268200, now seen corresponding path program 1 times [2023-11-26 10:49:53,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:53,813 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254308856] [2023-11-26 10:49:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:53,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:53,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:54,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:54,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:54,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254308856] [2023-11-26 10:49:54,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254308856] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:54,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:54,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:54,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307103720] [2023-11-26 10:49:54,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:54,096 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:54,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:54,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:54,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:54,097 INFO L87 Difference]: Start difference. First operand 191 states and 279 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) [2023-11-26 10:49:54,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:54,138 INFO L93 Difference]: Finished difference Result 197 states and 285 transitions. [2023-11-26 10:49:54,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:54,139 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 [2023-11-26 10:49:54,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:54,142 INFO L225 Difference]: With dead ends: 197 [2023-11-26 10:49:54,142 INFO L226 Difference]: Without dead ends: 196 [2023-11-26 10:49:54,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:54,144 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 4 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:54,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 542 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:49:54,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2023-11-26 10:49:54,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 194. [2023-11-26 10:49:54,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 184 states have (on average 1.5) internal successors, (276), 189 states have internal predecessors, (276), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:49:54,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 282 transitions. [2023-11-26 10:49:54,162 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 282 transitions. Word has length 5 [2023-11-26 10:49:54,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:54,163 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 282 transitions. [2023-11-26 10:49:54,163 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) [2023-11-26 10:49:54,163 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 282 transitions. [2023-11-26 10:49:54,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 10:49:54,164 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:54,164 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 10:49:54,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 10:49:54,165 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:49:54,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:54,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1860489501, now seen corresponding path program 1 times [2023-11-26 10:49:54,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:54,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117545877] [2023-11-26 10:49:54,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:54,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:54,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:54,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:54,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117545877] [2023-11-26 10:49:54,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117545877] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:54,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:54,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:54,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352697193] [2023-11-26 10:49:54,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:54,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:54,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:54,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:54,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:54,433 INFO L87 Difference]: Start difference. First operand 194 states and 282 transitions. Second operand has 4 states, 3 states have (on average 2.0) 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) [2023-11-26 10:49:54,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:54,502 INFO L93 Difference]: Finished difference Result 196 states and 284 transitions. [2023-11-26 10:49:54,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:54,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) 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 [2023-11-26 10:49:54,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:54,507 INFO L225 Difference]: With dead ends: 196 [2023-11-26 10:49:54,508 INFO L226 Difference]: Without dead ends: 195 [2023-11-26 10:49:54,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:54,514 INFO L413 NwaCegarLoop]: 273 mSDtfsCounter, 0 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:54,517 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 808 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:49:54,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2023-11-26 10:49:54,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 195. [2023-11-26 10:49:54,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 185 states have (on average 1.4972972972972973) internal successors, (277), 190 states have internal predecessors, (277), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:49:54,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 283 transitions. [2023-11-26 10:49:54,535 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 283 transitions. Word has length 6 [2023-11-26 10:49:54,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:54,535 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 283 transitions. [2023-11-26 10:49:54,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) 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) [2023-11-26 10:49:54,536 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 283 transitions. [2023-11-26 10:49:54,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 10:49:54,540 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:54,540 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:54,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 10:49:54,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:49:54,541 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:54,541 INFO L85 PathProgramCache]: Analyzing trace with hash -1270468711, now seen corresponding path program 1 times [2023-11-26 10:49:54,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:54,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849916144] [2023-11-26 10:49:54,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:54,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:54,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:54,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:54,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849916144] [2023-11-26 10:49:54,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849916144] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:54,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:54,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 10:49:54,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47370295] [2023-11-26 10:49:54,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:54,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:49:54,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:54,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:49:54,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:49:54,901 INFO L87 Difference]: Start difference. First operand 195 states and 283 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:55,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:55,052 INFO L93 Difference]: Finished difference Result 388 states and 564 transitions. [2023-11-26 10:49:55,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:55,052 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-11-26 10:49:55,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:55,054 INFO L225 Difference]: With dead ends: 388 [2023-11-26 10:49:55,055 INFO L226 Difference]: Without dead ends: 199 [2023-11-26 10:49:55,056 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:49:55,057 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 163 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:55,057 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 722 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:49:55,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2023-11-26 10:49:55,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 195. [2023-11-26 10:49:55,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 185 states have (on average 1.4594594594594594) internal successors, (270), 190 states have internal predecessors, (270), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:49:55,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 276 transitions. [2023-11-26 10:49:55,070 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 276 transitions. Word has length 79 [2023-11-26 10:49:55,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:55,071 INFO L495 AbstractCegarLoop]: Abstraction has 195 states and 276 transitions. [2023-11-26 10:49:55,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:55,072 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 276 transitions. [2023-11-26 10:49:55,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 10:49:55,075 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:55,076 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:55,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 10:49:55,076 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:49:55,077 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:55,077 INFO L85 PathProgramCache]: Analyzing trace with hash -701329011, now seen corresponding path program 1 times [2023-11-26 10:49:55,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:55,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880087305] [2023-11-26 10:49:55,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:55,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:55,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:55,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:55,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:55,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880087305] [2023-11-26 10:49:55,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880087305] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:55,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:55,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:49:55,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467811357] [2023-11-26 10:49:55,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:55,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 10:49:55,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:55,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 10:49:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-26 10:49:55,383 INFO L87 Difference]: Start difference. First operand 195 states and 276 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:55,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:55,457 INFO L93 Difference]: Finished difference Result 345 states and 480 transitions. [2023-11-26 10:49:55,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-26 10:49:55,457 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-11-26 10:49:55,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:55,459 INFO L225 Difference]: With dead ends: 345 [2023-11-26 10:49:55,459 INFO L226 Difference]: Without dead ends: 156 [2023-11-26 10:49:55,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:49:55,463 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 78 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:55,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 460 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:49:55,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2023-11-26 10:49:55,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2023-11-26 10:49:55,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 146 states have (on average 1.3630136986301369) internal successors, (199), 151 states have internal predecessors, (199), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:49:55,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 205 transitions. [2023-11-26 10:49:55,491 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 205 transitions. Word has length 79 [2023-11-26 10:49:55,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:55,491 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 205 transitions. [2023-11-26 10:49:55,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:55,492 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 205 transitions. [2023-11-26 10:49:55,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2023-11-26 10:49:55,495 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:55,495 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:55,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 10:49:55,496 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:49:55,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:55,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1577348017, now seen corresponding path program 1 times [2023-11-26 10:49:55,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:55,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586873527] [2023-11-26 10:49:55,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:55,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:55,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 10:49:55,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:55,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586873527] [2023-11-26 10:49:55,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586873527] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:55,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:55,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 10:49:55,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888882988] [2023-11-26 10:49:55,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:55,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 10:49:55,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:55,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 10:49:55,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 10:49:55,729 INFO L87 Difference]: Start difference. First operand 156 states and 205 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:55,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:55,805 INFO L93 Difference]: Finished difference Result 376 states and 502 transitions. [2023-11-26 10:49:55,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 10:49:55,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2023-11-26 10:49:55,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:55,809 INFO L225 Difference]: With dead ends: 376 [2023-11-26 10:49:55,809 INFO L226 Difference]: Without dead ends: 226 [2023-11-26 10:49:55,810 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 [2023-11-26 10:49:55,811 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 52 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:55,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 377 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 10:49:55,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2023-11-26 10:49:55,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 226. [2023-11-26 10:49:55,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 226 states, 216 states have (on average 1.3703703703703705) internal successors, (296), 221 states have internal predecessors, (296), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-11-26 10:49:55,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 226 states to 226 states and 302 transitions. [2023-11-26 10:49:55,823 INFO L78 Accepts]: Start accepts. Automaton has 226 states and 302 transitions. Word has length 79 [2023-11-26 10:49:55,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:55,823 INFO L495 AbstractCegarLoop]: Abstraction has 226 states and 302 transitions. [2023-11-26 10:49:55,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-26 10:49:55,823 INFO L276 IsEmpty]: Start isEmpty. Operand 226 states and 302 transitions. [2023-11-26 10:49:55,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2023-11-26 10:49:55,827 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:55,827 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:55,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 10:49:55,827 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:49:55,828 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:55,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1674777422, now seen corresponding path program 1 times [2023-11-26 10:49:55,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:55,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332242707] [2023-11-26 10:49:55,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:55,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:49:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:56,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:49:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:49:56,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:56,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332242707] [2023-11-26 10:49:56,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332242707] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:49:56,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:49:56,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:49:56,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681188990] [2023-11-26 10:49:56,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:49:56,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:49:56,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:56,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:49:56,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:49:56,178 INFO L87 Difference]: Start difference. First operand 226 states and 302 transitions. Second operand has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:49:56,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:56,529 INFO L93 Difference]: Finished difference Result 290 states and 392 transitions. [2023-11-26 10:49:56,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:49:56,530 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 92 [2023-11-26 10:49:56,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:56,534 INFO L225 Difference]: With dead ends: 290 [2023-11-26 10:49:56,534 INFO L226 Difference]: Without dead ends: 288 [2023-11-26 10:49:56,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:49:56,535 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 97 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:56,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 819 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-11-26 10:49:56,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 288 states. [2023-11-26 10:49:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 288 to 286. [2023-11-26 10:49:56,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 273 states have (on average 1.3553113553113554) internal successors, (370), 278 states have internal predecessors, (370), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2023-11-26 10:49:56,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 382 transitions. [2023-11-26 10:49:56,559 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 382 transitions. Word has length 92 [2023-11-26 10:49:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:56,559 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 382 transitions. [2023-11-26 10:49:56,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:49:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 382 transitions. [2023-11-26 10:49:56,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-26 10:49:56,567 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:56,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:56,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 10:49:56,568 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:49:56,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:56,569 INFO L85 PathProgramCache]: Analyzing trace with hash 837483536, now seen corresponding path program 1 times [2023-11-26 10:49:56,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:56,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296133957] [2023-11-26 10:49:56,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:56,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:56,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:56,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:49:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:56,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:49:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:49:56,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:56,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296133957] [2023-11-26 10:49:56,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296133957] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:56,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [370286139] [2023-11-26 10:49:56,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:56,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:56,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:56,908 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:56,932 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 10:49:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:57,281 INFO L262 TraceCheckSpWp]: Trace formula consists of 550 conjuncts, 4 conjunts are in the unsatisfiable core [2023-11-26 10:49:57,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:57,515 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:49:57,516 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:49:57,720 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:49:57,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [370286139] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:49:57,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:49:57,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2023-11-26 10:49:57,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550282919] [2023-11-26 10:49:57,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:49:57,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-11-26 10:49:57,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:49:57,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-11-26 10:49:57,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:49:57,724 INFO L87 Difference]: Start difference. First operand 286 states and 382 transitions. Second operand has 11 states, 11 states have (on average 23.90909090909091) internal successors, (263), 10 states have internal predecessors, (263), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:49:58,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:49:58,208 INFO L93 Difference]: Finished difference Result 436 states and 591 transitions. [2023-11-26 10:49:58,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-11-26 10:49:58,211 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 23.90909090909091) internal successors, (263), 10 states have internal predecessors, (263), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 97 [2023-11-26 10:49:58,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:49:58,218 INFO L225 Difference]: With dead ends: 436 [2023-11-26 10:49:58,218 INFO L226 Difference]: Without dead ends: 429 [2023-11-26 10:49:58,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2023-11-26 10:49:58,220 INFO L413 NwaCegarLoop]: 190 mSDtfsCounter, 753 mSDsluCounter, 1065 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:49:58,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1255 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:49:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2023-11-26 10:49:58,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 424. [2023-11-26 10:49:58,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 424 states, 408 states have (on average 1.3553921568627452) internal successors, (553), 413 states have internal predecessors, (553), 9 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2023-11-26 10:49:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 424 states to 424 states and 571 transitions. [2023-11-26 10:49:58,246 INFO L78 Accepts]: Start accepts. Automaton has 424 states and 571 transitions. Word has length 97 [2023-11-26 10:49:58,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:49:58,247 INFO L495 AbstractCegarLoop]: Abstraction has 424 states and 571 transitions. [2023-11-26 10:49:58,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 23.90909090909091) internal successors, (263), 10 states have internal predecessors, (263), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:49:58,248 INFO L276 IsEmpty]: Start isEmpty. Operand 424 states and 571 transitions. [2023-11-26 10:49:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2023-11-26 10:49:58,249 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:49:58,249 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:49:58,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 10:49:58,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-11-26 10:49:58,456 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:49:58,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:49:58,457 INFO L85 PathProgramCache]: Analyzing trace with hash 836831938, now seen corresponding path program 1 times [2023-11-26 10:49:58,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:49:58,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897336319] [2023-11-26 10:49:58,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:58,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:49:58,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:59,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:49:59,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:59,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:49:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:59,328 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:49:59,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:49:59,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897336319] [2023-11-26 10:49:59,329 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897336319] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:49:59,329 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419372] [2023-11-26 10:49:59,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:49:59,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:49:59,330 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:49:59,331 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:49:59,368 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 10:49:59,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:49:59,722 INFO L262 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 10:49:59,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:49:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:49:59,981 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:50:00,200 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:00,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419372] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:50:00,200 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:50:00,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-11-26 10:50:00,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310211716] [2023-11-26 10:50:00,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:50:00,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:50:00,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:00,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:50:00,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:50:00,203 INFO L87 Difference]: Start difference. First operand 424 states and 571 transitions. Second operand has 14 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:50:00,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:00,842 INFO L93 Difference]: Finished difference Result 580 states and 787 transitions. [2023-11-26 10:50:00,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 10:50:00,843 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 97 [2023-11-26 10:50:00,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:00,848 INFO L225 Difference]: With dead ends: 580 [2023-11-26 10:50:00,848 INFO L226 Difference]: Without dead ends: 579 [2023-11-26 10:50:00,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2023-11-26 10:50:00,849 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 382 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 2293 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:00,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 2293 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:50:00,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2023-11-26 10:50:00,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 564. [2023-11-26 10:50:00,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 545 states have (on average 1.3541284403669724) internal successors, (738), 550 states have internal predecessors, (738), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 10:50:00,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 762 transitions. [2023-11-26 10:50:00,881 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 762 transitions. Word has length 97 [2023-11-26 10:50:00,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:00,881 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 762 transitions. [2023-11-26 10:50:00,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 14.538461538461538) internal successors, (189), 13 states have internal predecessors, (189), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:50:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 762 transitions. [2023-11-26 10:50:00,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-11-26 10:50:00,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:00,883 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:00,896 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 10:50:01,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-11-26 10:50:01,090 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:50:01,090 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:01,090 INFO L85 PathProgramCache]: Analyzing trace with hash 171986377, now seen corresponding path program 1 times [2023-11-26 10:50:01,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:01,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352951187] [2023-11-26 10:50:01,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:01,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:01,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:01,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:50:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:50:01,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:01,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:01,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352951187] [2023-11-26 10:50:01,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352951187] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:50:01,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301172501] [2023-11-26 10:50:01,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:01,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:01,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:01,885 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:01,908 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 10:50:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:02,292 INFO L262 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 13 conjunts are in the unsatisfiable core [2023-11-26 10:50:02,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:02,531 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:02,531 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:50:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:02,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301172501] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:50:02,738 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:50:02,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-11-26 10:50:02,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404358921] [2023-11-26 10:50:02,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:50:02,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-11-26 10:50:02,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:02,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-11-26 10:50:02,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2023-11-26 10:50:02,741 INFO L87 Difference]: Start difference. First operand 564 states and 762 transitions. Second operand has 14 states, 13 states have (on average 14.76923076923077) internal successors, (192), 13 states have internal predecessors, (192), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:50:03,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:03,234 INFO L93 Difference]: Finished difference Result 577 states and 784 transitions. [2023-11-26 10:50:03,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 10:50:03,236 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 14.76923076923077) internal successors, (192), 13 states have internal predecessors, (192), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 98 [2023-11-26 10:50:03,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:03,240 INFO L225 Difference]: With dead ends: 577 [2023-11-26 10:50:03,240 INFO L226 Difference]: Without dead ends: 576 [2023-11-26 10:50:03,241 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2023-11-26 10:50:03,242 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 580 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 2014 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:03,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [590 Valid, 2014 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-11-26 10:50:03,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2023-11-26 10:50:03,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 565. [2023-11-26 10:50:03,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 546 states have (on average 1.34981684981685) internal successors, (737), 551 states have internal predecessors, (737), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 10:50:03,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 761 transitions. [2023-11-26 10:50:03,279 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 761 transitions. Word has length 98 [2023-11-26 10:50:03,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:03,280 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 761 transitions. [2023-11-26 10:50:03,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 14.76923076923077) internal successors, (192), 13 states have internal predecessors, (192), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:50:03,280 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 761 transitions. [2023-11-26 10:50:03,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2023-11-26 10:50:03,284 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:03,284 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:03,291 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 10:50:03,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-11-26 10:50:03,491 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:50:03,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:03,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1227360297, now seen corresponding path program 1 times [2023-11-26 10:50:03,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:03,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740091052] [2023-11-26 10:50:03,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:03,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:50:04,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:50:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:04,106 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:04,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:04,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740091052] [2023-11-26 10:50:04,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740091052] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:50:04,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1372195779] [2023-11-26 10:50:04,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:04,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:04,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:04,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:04,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 10:50:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:04,601 INFO L262 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 5 conjunts are in the unsatisfiable core [2023-11-26 10:50:04,607 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:04,896 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:04,897 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 10:50:04,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1372195779] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:04,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 10:50:04,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2023-11-26 10:50:04,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73968411] [2023-11-26 10:50:04,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:04,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 10:50:04,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:04,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 10:50:04,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-26 10:50:04,900 INFO L87 Difference]: Start difference. First operand 565 states and 761 transitions. Second operand has 6 states, 5 states have (on average 33.0) internal successors, (165), 6 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:50:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:04,993 INFO L93 Difference]: Finished difference Result 565 states and 761 transitions. [2023-11-26 10:50:04,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 10:50:04,994 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 33.0) internal successors, (165), 6 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 171 [2023-11-26 10:50:04,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:04,998 INFO L225 Difference]: With dead ends: 565 [2023-11-26 10:50:04,998 INFO L226 Difference]: Without dead ends: 564 [2023-11-26 10:50:04,999 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2023-11-26 10:50:05,000 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 257 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1157 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:05,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1157 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 10:50:05,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 564 states. [2023-11-26 10:50:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 564 to 564. [2023-11-26 10:50:05,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 546 states have (on average 1.3443223443223444) internal successors, (734), 550 states have internal predecessors, (734), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 10:50:05,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 758 transitions. [2023-11-26 10:50:05,031 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 758 transitions. Word has length 171 [2023-11-26 10:50:05,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:05,031 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 758 transitions. [2023-11-26 10:50:05,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 33.0) internal successors, (165), 6 states have internal predecessors, (165), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:50:05,032 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 758 transitions. [2023-11-26 10:50:05,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2023-11-26 10:50:05,036 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:05,036 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:05,049 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-11-26 10:50:05,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-11-26 10:50:05,244 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:50:05,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:05,245 INFO L85 PathProgramCache]: Analyzing trace with hash -11725445, now seen corresponding path program 1 times [2023-11-26 10:50:05,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:05,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365632802] [2023-11-26 10:50:05,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:05,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:05,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:50:05,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:05,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:50:05,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:05,856 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2023-11-26 10:50:05,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:05,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365632802] [2023-11-26 10:50:05,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365632802] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 10:50:05,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 10:50:05,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-26 10:50:05,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068417261] [2023-11-26 10:50:05,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 10:50:05,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 10:50:05,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:05,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 10:50:05,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 10:50:05,862 INFO L87 Difference]: Start difference. First operand 564 states and 758 transitions. Second operand has 5 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:50:06,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:06,121 INFO L93 Difference]: Finished difference Result 566 states and 772 transitions. [2023-11-26 10:50:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 10:50:06,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 251 [2023-11-26 10:50:06,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:06,127 INFO L225 Difference]: With dead ends: 566 [2023-11-26 10:50:06,127 INFO L226 Difference]: Without dead ends: 565 [2023-11-26 10:50:06,128 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-11-26 10:50:06,129 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 106 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:06,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 531 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 10:50:06,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 565 states. [2023-11-26 10:50:06,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 565 to 563. [2023-11-26 10:50:06,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 546 states have (on average 1.3406593406593406) internal successors, (732), 549 states have internal predecessors, (732), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2023-11-26 10:50:06,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 756 transitions. [2023-11-26 10:50:06,194 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 756 transitions. Word has length 251 [2023-11-26 10:50:06,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:06,195 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 756 transitions. [2023-11-26 10:50:06,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 42.25) internal successors, (169), 4 states have internal predecessors, (169), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2023-11-26 10:50:06,196 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 756 transitions. [2023-11-26 10:50:06,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2023-11-26 10:50:06,201 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:06,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:06,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-26 10:50:06,202 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:50:06,202 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:06,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1079511824, now seen corresponding path program 1 times [2023-11-26 10:50:06,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:06,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276979112] [2023-11-26 10:50:06,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:06,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:06,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:07,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:50:07,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:07,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:50:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:07,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:07,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276979112] [2023-11-26 10:50:07,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276979112] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:50:07,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772967668] [2023-11-26 10:50:07,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:07,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:07,251 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:07,253 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:07,280 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 10:50:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:07,921 INFO L262 TraceCheckSpWp]: Trace formula consists of 1288 conjuncts, 8 conjunts are in the unsatisfiable core [2023-11-26 10:50:07,928 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:08,314 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:08,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:50:08,810 INFO L134 CoverageAnalysis]: Checked inductivity of 239 backedges. 0 proven. 236 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:08,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772967668] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:50:08,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:50:08,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 19 [2023-11-26 10:50:08,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805427395] [2023-11-26 10:50:08,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:50:08,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-11-26 10:50:08,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:08,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-11-26 10:50:08,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2023-11-26 10:50:08,815 INFO L87 Difference]: Start difference. First operand 563 states and 756 transitions. Second operand has 19 states, 19 states have (on average 30.473684210526315) internal successors, (579), 18 states have internal predecessors, (579), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:50:09,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:09,537 INFO L93 Difference]: Finished difference Result 982 states and 1343 transitions. [2023-11-26 10:50:09,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-11-26 10:50:09,539 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 30.473684210526315) internal successors, (579), 18 states have internal predecessors, (579), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 255 [2023-11-26 10:50:09,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:09,547 INFO L225 Difference]: With dead ends: 982 [2023-11-26 10:50:09,547 INFO L226 Difference]: Without dead ends: 976 [2023-11-26 10:50:09,548 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2023-11-26 10:50:09,550 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1281 mSDsluCounter, 2620 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1319 SdHoareTripleChecker+Valid, 2929 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:09,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1319 Valid, 2929 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:50:09,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2023-11-26 10:50:09,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 970. [2023-11-26 10:50:09,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 970 states, 944 states have (on average 1.3432203389830508) internal successors, (1268), 947 states have internal predecessors, (1268), 21 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2023-11-26 10:50:09,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1310 transitions. [2023-11-26 10:50:09,606 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1310 transitions. Word has length 255 [2023-11-26 10:50:09,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:09,607 INFO L495 AbstractCegarLoop]: Abstraction has 970 states and 1310 transitions. [2023-11-26 10:50:09,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 30.473684210526315) internal successors, (579), 18 states have internal predecessors, (579), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2023-11-26 10:50:09,608 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1310 transitions. [2023-11-26 10:50:09,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2023-11-26 10:50:09,614 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:09,615 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:09,630 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 10:50:09,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-11-26 10:50:09,825 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:50:09,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:09,828 INFO L85 PathProgramCache]: Analyzing trace with hash -367219509, now seen corresponding path program 1 times [2023-11-26 10:50:09,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:09,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429017572] [2023-11-26 10:50:09,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:09,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:50:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:14,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:50:14,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:14,190 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:14,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:14,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429017572] [2023-11-26 10:50:14,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [429017572] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:50:14,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615583712] [2023-11-26 10:50:14,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:14,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:14,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:14,193 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:14,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 10:50:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:15,088 INFO L262 TraceCheckSpWp]: Trace formula consists of 1689 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-26 10:50:15,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:15,736 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:15,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:50:16,453 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:16,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615583712] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:50:16,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:50:16,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2023-11-26 10:50:16,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870630369] [2023-11-26 10:50:16,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:50:16,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-26 10:50:16,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:16,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-26 10:50:16,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=552, Unknown=0, NotChecked=0, Total=812 [2023-11-26 10:50:16,460 INFO L87 Difference]: Start difference. First operand 970 states and 1310 transitions. Second operand has 29 states, 28 states have (on average 24.0) internal successors, (672), 28 states have internal predecessors, (672), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:50:17,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:17,432 INFO L93 Difference]: Finished difference Result 1412 states and 1930 transitions. [2023-11-26 10:50:17,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2023-11-26 10:50:17,433 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 24.0) internal successors, (672), 28 states have internal predecessors, (672), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 334 [2023-11-26 10:50:17,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:17,444 INFO L225 Difference]: With dead ends: 1412 [2023-11-26 10:50:17,444 INFO L226 Difference]: Without dead ends: 1411 [2023-11-26 10:50:17,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 691 GetRequests, 653 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 491 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=481, Invalid=1079, Unknown=0, NotChecked=0, Total=1560 [2023-11-26 10:50:17,447 INFO L413 NwaCegarLoop]: 308 mSDtfsCounter, 2017 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2063 SdHoareTripleChecker+Valid, 3181 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:17,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2063 Valid, 3181 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:50:17,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1411 states. [2023-11-26 10:50:17,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1411 to 1384. [2023-11-26 10:50:17,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1349 states have (on average 1.3432171979243885) internal successors, (1812), 1352 states have internal predecessors, (1812), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-26 10:50:17,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 1872 transitions. [2023-11-26 10:50:17,525 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 1872 transitions. Word has length 334 [2023-11-26 10:50:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:17,526 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 1872 transitions. [2023-11-26 10:50:17,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 24.0) internal successors, (672), 28 states have internal predecessors, (672), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:50:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 1872 transitions. [2023-11-26 10:50:17,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2023-11-26 10:50:17,533 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:17,534 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:17,548 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-11-26 10:50:17,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-11-26 10:50:17,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:50:17,744 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:17,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1501097184, now seen corresponding path program 1 times [2023-11-26 10:50:17,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:17,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159047200] [2023-11-26 10:50:17,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:17,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:21,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:50:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:21,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:50:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:21,624 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 488 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:21,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:21,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159047200] [2023-11-26 10:50:21,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159047200] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:50:21,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [123053510] [2023-11-26 10:50:21,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:21,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:21,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:21,627 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:21,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-11-26 10:50:22,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:22,511 INFO L262 TraceCheckSpWp]: Trace formula consists of 1690 conjuncts, 28 conjunts are in the unsatisfiable core [2023-11-26 10:50:22,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:23,129 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 488 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:23,130 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 10:50:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 491 backedges. 0 proven. 488 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:23,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [123053510] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 10:50:23,797 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 10:50:23,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 28 [2023-11-26 10:50:23,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81092912] [2023-11-26 10:50:23,798 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 10:50:23,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-11-26 10:50:23,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 10:50:23,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-11-26 10:50:23,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=552, Unknown=0, NotChecked=0, Total=812 [2023-11-26 10:50:23,802 INFO L87 Difference]: Start difference. First operand 1384 states and 1872 transitions. Second operand has 29 states, 28 states have (on average 24.107142857142858) internal successors, (675), 28 states have internal predecessors, (675), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:50:24,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 10:50:24,626 INFO L93 Difference]: Finished difference Result 1406 states and 1924 transitions. [2023-11-26 10:50:24,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-26 10:50:24,627 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 24.107142857142858) internal successors, (675), 28 states have internal predecessors, (675), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 335 [2023-11-26 10:50:24,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 10:50:24,638 INFO L225 Difference]: With dead ends: 1406 [2023-11-26 10:50:24,638 INFO L226 Difference]: Without dead ends: 1405 [2023-11-26 10:50:24,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 389 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=340, Invalid=782, Unknown=0, NotChecked=0, Total=1122 [2023-11-26 10:50:24,640 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 1701 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 2902 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-11-26 10:50:24,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1747 Valid, 2902 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-11-26 10:50:24,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1405 states. [2023-11-26 10:50:24,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1405 to 1385. [2023-11-26 10:50:24,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1385 states, 1350 states have (on average 1.3392592592592591) internal successors, (1808), 1353 states have internal predecessors, (1808), 30 states have call successors, (30), 1 states have call predecessors, (30), 1 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2023-11-26 10:50:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1385 states to 1385 states and 1868 transitions. [2023-11-26 10:50:24,710 INFO L78 Accepts]: Start accepts. Automaton has 1385 states and 1868 transitions. Word has length 335 [2023-11-26 10:50:24,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 10:50:24,711 INFO L495 AbstractCegarLoop]: Abstraction has 1385 states and 1868 transitions. [2023-11-26 10:50:24,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 24.107142857142858) internal successors, (675), 28 states have internal predecessors, (675), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2023-11-26 10:50:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 1385 states and 1868 transitions. [2023-11-26 10:50:24,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2023-11-26 10:50:24,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 10:50:24,727 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 10:50:24,745 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-11-26 10:50:24,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-11-26 10:50:24,938 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 3 more)] === [2023-11-26 10:50:24,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 10:50:24,939 INFO L85 PathProgramCache]: Analyzing trace with hash -714240336, now seen corresponding path program 2 times [2023-11-26 10:50:24,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 10:50:24,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148704726] [2023-11-26 10:50:24,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 10:50:24,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 10:50:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:27,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-11-26 10:50:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:27,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2023-11-26 10:50:27,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 10:50:28,001 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 0 proven. 1654 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:28,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 10:50:28,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148704726] [2023-11-26 10:50:28,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1148704726] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 10:50:28,003 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392848533] [2023-11-26 10:50:28,003 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 10:50:28,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 10:50:28,004 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 10:50:28,005 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 10:50:28,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e0290acc-8bee-4109-bd5b-817429f2704d/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-11-26 10:50:29,417 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 10:50:29,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 10:50:29,437 INFO L262 TraceCheckSpWp]: Trace formula consists of 2764 conjuncts, 16 conjunts are in the unsatisfiable core [2023-11-26 10:50:29,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 10:50:30,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 0 proven. 1654 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-11-26 10:50:30,301 INFO L327 TraceCheckSpWp]: Computing backward predicates...